S-8521A33MC-AXST2G

S-8520/8521 Series www.ablic.com www.ablicinc.com STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 © ABLIC Inc., 1997-2010 The S-8520/8521 Series is a CMOS step-down switching regulator-controller with PWM control (S-8520 Series) and PWM / PFM switching control (S-8521 Series). The S-8520/8521 Series has a reference voltage source, an oscillation circuit, an error amplifier, and other components. The S-8520 Series provides low-ripple power, high efficiency, and excellent transient characteristics due to a PWM control circuit capable of varying the duty ratio linearly from 0% up to 100%. The S-8520/8521 Series also has a soft-start circuit that prevents overshoot at startup. The S-8521 Series works with either PWM control or PFM control. It normally operates using PWM control with a duty ratio of 25% to 100%, but under a light load, it automatically switches to PFM control with a duty ratio of 25%. The S-8520/8521 Series ensures high efficiency over a wide range of conditions for devices, from the standby mode to the operation. By adding external Pch power MOS FET or PNP transistor, coil, capacitor, and externally connected diode, the S-8520/8521 Series can function as a step-down switching regulator, and is ideal for power supply units of portable devices due to small SOT-23-5 and the feature of low current consumption. It is also ideal for AC adapters due to the input voltage up to 16 V.  Features  Low current consumption          60 A max. (A, B types) 21 A max. (C, D types) 100 A max. (E, F types) During shutdown: 0.5 A max. Input voltage: 2.5 V to 16 V (B, D, F types) 2.5 V to 10 V (A, C, E types) Output voltage: Selectable between 1.5 V and 6.0 V in 0.1 V step Duty ratio: 0% to 100% PWM control (S-8520 Series) 25% to100% PWM / PFM switching control (S-8521 Series) External parts are Pch power MOS FET or PNP transistor, coil, diode, and capacitor only (When using PNP transistor, add base resistor and capacitor). Oscillation frequency: 180 kHz typ. (A, B types) 60 kHz typ. (C, D types) 300 kHz typ. (E, F types) Soft-start function: 8 ms. typ. (A, B types) 12 ms. typ. (C, D types) 4.5 ms. typ. (E, F types) With a shutdown function With a built-in overload protection circuit Overload detection time: 4 ms. typ. (A type) 14 ms. typ. (C type) 2.6 ms. typ. (E type) *1 Lead-free, Sn 100%, halogen-free During operation: *1. Refer to “ Product Name Structure” for details. 1 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Applications       On-board power supplies of battery devices for mobile phone, electronic notebooks, PDAs. Power supplies for audio equipment, including portable CD players and headphone stereo equipment. Fixed voltage power supply for cameras, video and communication devices. Power supplies for microcomputers Conversion from NiH or four NiCd cells or two lithium-ion cells to 3.3 V / 3 V. Conversion of AC adapter input to 5 V / 3 V.  Package  SOT-23-5 2 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Block Diagrams 1. S-8520 Series L Tr VIN Oscillation circuit EXT VIN  CIN Reference voltage source with soft-start VOUT  PWM control circuit SD  COUT  VON/OFF VSS ______ ______ ON/OFF Remark All the diodes in the figure are parasitic diodes. Figure 1 2. S-8521 Series L Tr VIN Oscillation circuit EXT VIN  CIN Reference voltage source with soft-start VOUT  PWM / PFM switching control circuit SD  COUT  VON/OFF ______ VSS ______ ON/OFF Remark All the diodes in the figure are parasitic diodes. Figure 2 3 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Product Name Structure The control types, product types, and output voltage for the S-8520/8521 Series can be selected at the user’s request. Please refer to the “1. Product name” for the definition of the product name, “2. Package” regarding the package drawings and “3. Product name list” for the full product names. 1. Product name S-852 x x xx MC  xxx T2 x Environm ental code U: Lead-free (Sn 100% ), halogen-free G: Lead-free (for details, please contact our sales office) IC direction in tape specifications *1 Product name (abbreviation) *2 Package name (abbreviation) MC : SO T-23-5 O utput voltage 15 to 60 (W hen the output voltage is 1.5 V, it is expressed as 15.) Product type A: O scillation frequency of 180 kHz, W ith overload protection circuit B: Oscillation frequency of 180 kHz, W ithout overload protection circuit C: Oscillation frequency of 60 kHz, W ith overload protection circuit D: Oscillation frequency of 60 kHz, W ithout overload protection circuit E: Oscillation frequency of 300 kHz, W ith overload protection circuit F: Oscillation frequency of 300 kHz, W ithout overload protection circuit Control system 0: PW M control 1: PW M / PFM switching control *1. *2. 2. Refer to the tape specifications. Refer to “3. Product name list”. Package Package Name SOT-23-5 4 Package MP005-A-P-SD Drawing code Tape MP005-A-C-SD Reel MP005-A-R-SD STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 3. Product name list 3. 1 S-8520 Series Output voltage [V] 1.5 1.8 2.0 2.1 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 4.0 4.3 5.0 5.3 Table 1 (1 / 2) S-8520AxxMC Series S-8520BxxMC Series S-8520B15MC-ARAT2x  S-8520B18MC-ARDT2x  S-8520A20MC-AVFT2x  S-8520A21MC-AVGT2x  S-8520B24MC-ARJT2x  S-8520A25MC-AVKT2x S-8520B25MC-ARKT2x S-8520A26MC-AVLT2x  S-8520A27MC-AVMT2x S-8520B27MC-ARMT2x S-8520A28MC-AVNT2x S-8520B28MC-ARNT2x S-8520A29MC-AVOT2x S-8520B29MC-AROT2x S-8520A30MC-AVPT2x S-8520B30MC-ARPT2x S-8520A31MC-AVQT2x S-8520B31MC-ARQT2x S-8520A32MC-AVRT2x S-8520B32MC-ARRT2x S-8520A33MC-AVST2x S-8520B33MC-ARST2x S-8520A34MC-AVTT2x S-8520B34MC-ARTT2x S-8520A35MC-AVUT2x S-8520B35MC-ARUT2x S-8520A36MC-AVVT2x S-8520B36MC-ARVT2x S-8520B40MC-ARZT2x  S-8520B43MC-ASCT2x  S-8520A50MC-AWJT2x S-8520B50MC-ASJT2x S-8520B53MC-ASMT2x  S-8520CxxMC Series      S-8520C25MC-BRKT2x  S-8520C27MC-BRMT2x S-8520C28MC-BRNT2x S-8520C29MC-BROT2x S-8520C30MC-BRPT2x S-8520C31MC-BRQT2x S-8520C32MC-BRRT2x S-8520C33MC-BRST2x S-8520C34MC-BRTT2x S-8520C35MC-BRUT2x S-8520C36MC-BRVT2x   S-8520C50MC-BSJT2x  Output voltage [V] 1.5 1.6 1.8 2.0 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 4.0 4.5 5.0 5.2 5.5 6.0 Table 1 (2 / 2) S-8520DxxMC Series S-8520ExxMC Series S-8520E15MC-BJAT2x  S-8520E16MC-BJBT2x  S-8520E18MC-BJDT2x    S-8520D25MC-BVKT2x S-8520E25MC-BJKT2x   S-8520D27MC-BVMT2x  S-8520D28MC-BVNT2x S-8520E28MC-BJNT2x S-8520D29MC-BVOT2x  S-8520D30MC-BVPT2x S-8520E30MC-BJPT2x S-8520D31MC-BVQT2x  S-8520D32MC-BVRT2x  S-8520D33MC-BVST2x S-8520E33MC-BJST2x S-8520D34MC-BVTT2x  S-8520D35MC-BVUT2x  S-8520D36MC-BVVT2x      S-8520D50MC-BWJT2x S-8520E50MC-BKJT2x S-8520E52MC-BKLT2x      S-8520FxxMC Series S-8520F15MC-BNAT2x  S-8520F18MC-BNDT2x S-8520F20MC-BNFT2x S-8520F25MC-BNKT2x S-8520F26MC-BNLT2x S-8520F27MC-BNMT2x S-8520F28MC-BNNT2x  S-8520F30MC-BNPT2x S-8520F31MC-BNQT2x  S-8520F33MC-BNST2x S-8520F34MC-BNTT2x S-8520F35MC-BNUT2x S-8520F36MC-BNVT2x S-8520F40MC-BNZT2x S-8520F45MC-BOET2x S-8520F50MC-BOJT2x  S-8520F55MC-BOOT2x S-8520F60MC-BOTT2x Remark 1. Please contact our sales office for products with output voltage other than those specified above. 2. x: G or U 3. Please select products of environmental code = U for Sn 100%, halogen-free products. 5 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 3. 2 S-8521 Series Output voltage [V] 1.5 1.6 1.8 1.9 2.0 2.1 2.3 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 4.0 4.4 5.0 5.1 5.3 6.0 Table 2 (1 / 2) S-8521AxxMC Series S-8521BxxMC Series  S-8521B15MC-ATAT2x    S-8521B18MC-ATDT2x  S-8521B19MC-ATET2x  S-8521B20MC-ATFT2x  S-8521B21MC-ATGT2x  S-8521B23MC-ATIT2x S-8521A25MC-AXKT2x S-8521B25MC-ATKT2x  S-8521B26MC-ATLT2x S-8521A27MC-AXMT2x S-8521B27MC-ATMT2x S-8521A28MC-AXNT2x S-8521B28MC-ATNT2x S-8521A29MC-AXOT2x S-8521B29MC-ATOT2x S-8521A30MC-AXPT2x S-8521B30MC-ATPT2x S-8521A31MC-AXQT2x S-8521B31MC-ATQT2x S-8521A32MC-AXRT2x S-8521B32MC-ATRT2x S-8521A33MC-AXST2x S-8521B33MC-ATST2x S-8521A34MC-AXTT2x S-8521B34MC-ATTT2x S-8521A35MC-AXUT2x S-8521B35MC-ATUT2x S-8521A36MC-AXVT2x S-8521B36MC-ATVT2x  S-8521B40MC-ATZT2x  S-8521B44MC-AUDT2x S-8521A50MC-AYJT2x S-8521B50MC-AUJT2x  S-8521B51MC-AUKT2x  S-8521B53MC-AUMT2x  S-8521B60MC-AUTT2x S-8521CxxMC Series  S-8521C16MC-BTBT2x      S-8521C25MC-BTKT2x  S-8521C27MC-BTMT2x S-8521C28MC-BTNT2x S-8521C29MC-BTOT2x S-8521C30MC-BTPT2x S-8521C31MC-BTQT2x S-8521C32MC-BTRT2x S-8521C33MC-BTST2x S-8521C34MC-BTTT2x S-8521C35MC-BTUT2x S-8521C36MC-BTVT2x   S-8521C50MC-BUJT2x    Output voltage [V] 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.5 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 4.0 4.2 4.5 5.0 5.2 5.3 5.5 Table 2 (2 / 2) S-8521DxxMC Series S-8521ExxMC Series  S-8521E15MC-BLAT2x S-8521D16MC-BXBT2x S-8521E16MC-BLBT2x  S-8521E17MC-BLCT2x S-8521D18MC-BXDT2x S-8521E18MC-BLDT2x  S-8521E19MC-BLET2x S-8521D20MC-BXFT2x S-8521E20MC-BLFT2x S-8521D21MC-BXGT2x  S-8521D22MC-BXHT2x S-8521E22MC-BLHT2x S-8521D25MC-BXKT2x S-8521E25MC-BLKT2x S-8521D27MC-BXMT2x  S-8521D28MC-BXNT2x  S-8521D29MC-BXOT2x  S-8521D30MC-BXPT2x S-8521E30MC-BLPT2x S-8521D31MC-BXQT2x  S-8521D32MC-BXRT2x  S-8521D33MC-BXST2x S-8521E33MC-BLST2x S-8521D34MC-BXTT2x － S-8521D35MC-BXUT2x S-8521E35MC-BLUT2x S-8521D36MC-BXVT2x  S-8521D40MC-BXZT2x   S-8521E42MC-BMBT2x S-8521D45MC-BYET2x  S-8521D50MC-BYJT2x S-8521E50MC-BMJT2x S-8521D52MC-BYLT2x   S-8521E53MC-BMMT2x S-8521D55MC-BYOT2x  S-8521FxxMC Series S-8521F15MC-BPAT2x   S-8521F18MC-BPDT2x S-8521F19MC-BPET2x    S-8521F25MC-BPKT2x    S-8521F30MC-BPPT2x  S-8521F32MC-BPRT2x S-8521F33MC-BPST2x S-8521F34MC-BPTT2x  S-8521F36MC-BPVT2x S-8521F40MC-BPZT2x   S-8521F50MC-BQJT2x   S-8521F55MC-BQOT2x Remark 1. Please contact our sales office for products with output voltage other than those specified above. 2. x: G or U 3. Please select products of environmental code = U for Sn 100%, halogen-free products. 6 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Pin Configuration Table 3 SOT-23-5 Pin No. Symbol Top view 5 1 4 2 ______ 1 ON/OFF 2 3 4 5 VSS VOUT EXT VIN Description Shutdown pin “H”: Normal operation (Step-down operation) “L”: Stop step-down operation (All circuits stop) GND pin Output voltage monitoring pin Connection pin for external transistor IC power supply pin 3 Figure 3 7 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Absolute Maximum Ratings Table 4 (Ta = 25°C unless otherwise specified) Item Symbol A, C, E types B, D, F types A, C, E types B, D, F types A, C, E types B, D, F types VIN pin voltage VOUT pin voltage ______ ON/OFF pin voltage VIN VOUT ______ VON/OFF EXT pin voltage EXT pin current VEXT IEXT Power dissipation PD Operating ambient temperature Storage temperature Topr Tstg *1. Absolute maximum rating VSS  0.3 to VSS  12.0 VSS  0.3 to VSS  18.0 VSS  0.3 to VSS  12.0 VSS  0.3 to VSS  18.0 VSS  0.3 to VSS  12.0 VSS  0.3 to VSS  18.0 VSS  0.3 to VIN  0.3 50 250 (When not mounted on board) 600*1 40 to 85 40 to 125 V V V V V V V mA mW mW °C °C When mounted on board [Mounted board] (1) Board size : 114.3 mm  76.2 mm  t1.6 mm (2) Board name : JEDEC STANDARD51-7 Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any conditions. (1) When mounted on board (2) When not mounted on board 300 Power Dissipation (PD) [mW] Power Dissipation (PD) [mW] 700 600 500 400 300 200 100 0 0 50 100 150 Ambient Temperature (Ta) [C] Figure 4 8 Unit 250 200 150 100 50 0 0 50 100 150 Ambient Temperature (Ta) [C] Power Dissipation of Package STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Electrical Characteristics 1. A type, B type Table 5 Item Symbol Conditions Output voltage*1 VOUT(E) Input voltage VIN Current consumption 1 Current consumption during shutdown ISS1 VOUT = VOUT(S)  1.2 ISSS VON/OFF = 0 V  A type B type  ______   0.5 A 2 2.3 3.7 5.3 6.7 8.0 4.3 7.0 9.9 12.6 15.0              60 60 60 mA mA mA mA mA mA mA mA mA mA mV mV mV           3 3 3  V/°C 3 144 153 4.5 7.0 9.3 11.3 13.3 8.4 13.2 17.5 21.4 25.1 30 30 30 VOUT(S)  5E  5 180 180 216 207 kHz kHz 3 3 PFMDuty No load, measure waveform at EXT pin. 15 25 40 % 3 VSH Determine oscillation at EXT pin 1.8   V 2 VSL Determine oscillation stop at EXT pin   0.3 V 2 IEXTH EXT pin output current IEXTL Line regulation VOUT1 Load regulation Output voltage temperature coefficient VOUT2 VOUT Ta Oscillation frequency fosc PWM / PFM control switching duty ratio (S-8521 Series) ON/OFF pin (Ta = 25°C unless otherwise specified) Test Min. Typ. Max. Unit Circuit VOUT(S) VOUT(S) VOUT(S) V 3  0.976  1.024 2.5  10.0 V 2 2.5  16.0 V 2  35 60 A 2 S-8520/8521x15 to 24 S-8520/8521x25 to 34 VEXT = VIN  0.4 V S-8520/8521x35 to 44 S-8520/8521x45 to 54 S-8520/8521x55 to 60 S-8520/8521x15 to 24 S-8520/8521x25 to 34 VEXT = 0.4 V S-8520/8521x35 to 44 S-8520/8521x45 to 54 S-8520/8521x55 to 60 VOUT(S)  2.0 V VIN = 2.5 V to 2.94 V VOUT(S)  2.0 V VIN = VOUT(S)  1.2 to 1.4 Load current = 10 A to IOUT  1.25 Ta = 40°C to 85°C Measure waveform at EXT pin.  VOUT(S)  2.4 V VOUT(S)  2.5 V input voltage ON/OFF pin ISH  0.1  0.1 A 1 input leakage current ISL  0.1  0.1 A 1 Soft start time Overload detection time (A type) Efficiency tss  Time until the EXT pin reaches VIN after dropping VOUT to 0 V.  4.0 8.0 16.0 ms 3 2.0 4.0 8.0 ms 2  93  % 3 External parts tpro EFFI Coil: Diode: Capacitor: Transistor: Base resistance (Rb): Base capacitor (Cb): Unless otherwise indicated, connect the Sumida Corporation CD54 (47 H) Matsushita Electric Industrial Co., Ltd. MA720 (Shottky type) Matsushita Electric Industrial Co., Ltd. TE (16 V, 22 F tantalum type) Toshiba Corporation 2SA1213 0.68 k 2200 pF (Ceramic type) recommended components to the IC. When VIN = VOUT(S)  1.2 V (VIN = 2.5 V ______ when VOUT(S)  2.0 V), IOUT = 120 mA, connect the ON/OFF pin to the VIN pin. *1. VOUT(S): Specified output voltage value, VOUT(E): Actual output voltage value 9 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 2. C type, D type Table 6 Item Symbol Conditions Output voltage*1 VOUT(E) Input voltage VIN Current consumption 1 Current consumption during shutdown ISS1 VOUT = VOUT(S)  1.2 ISSS VON/OFF = 0 V  C type D type  ______   0.5 A 2 2.3 3.7 5.3 6.7 8.0 4.3 7.0 9.9 12.6 15.0              60 60 60 mA mA mA mA mA mA mA mA mA mA mV mV mV           3 3 3  V/°C 3 75 72 kHz kHz 3 3 40 % 3 VOUT(S)  2.4 V VOUT(S)  2.5 V 45 48 4.5 7.0 9.3 11.3 13.3 8.4 13.2 17.5 21.4 25.1 30 30 30 VOUT(S)  5E 5 60 60 PFMDuty No load, measured waveform at EXT pin. 15 25 VSH Determine oscillation at EXT pin 1.8   V 2 VSL Determine oscillation stop at EXT pin   0.3 V 2  0.1 A 1 IEXTH EXT pin output current IEXTL Line regulation VOUT1 Load regulation Output voltage temperature coefficient VOUT2 VOUT Ta Oscillation frequency fosc PWM / PFM control switching duty ratio (S-8521 Series) ON/OFF pin (Ta = 25°C unless otherwise specified) Test Min. Typ. Max. Unit Circuit VOUT(S) VOUT(S) VOUT(S) V 3  0.976  1.024 2.5  10.0 V 2 2.5  16.0 V 2  10 21 A 2 S-8520/8521x15 to 24 S-8520/8521x25 to 34 VEXT = VIN  0.4 V S-8520/8521x35 to 44 S-8520/8521x45 to 54 S-8520/8521x55 to 60 S-8520/8521x15 to 24 S-8520/8521x25 to 34 VEXT = 0.4 V S-8520/8521x35 to 44 S-8520/8521x45 to 54 S-8520/8521x55 to 60 VOUT(S)  2.0 V VIN = 2.5 V to 2.94 V VOUT(S)  2.0 V VIN = VOUT(S)  1.2 to 1.4 Load current = 10 A to IOUT  1.25 Ta = 40°C to 85°C Measure waveform at EXT pin.  input voltage ON/OFF pin ISH  0.1 input leakage current ISL  0.1  0.1 A 1 Soft start time Overload detection time (C type) Efficiency tss  Time until the EXT pin reaches VIN after dropping VOUT to 0 V.  6.0 12.0 24.0 ms 3 7.0 14.0 28.0 ms 2  93  % 3 External parts tpro EFFI Coil: Diode: Capacitor: Transistor: Base resistance (Rb): Base capacitor (Cb): Unless otherwise indicated, connect the Sumida Corporation CD54 (47 H) Matsushita Electric Industrial Co., Ltd. MA720 (Shottky type) Matsushita Electric Industrial Co., Ltd. TE (16 V, 22 F tantalum type) Toshiba Corporation 2SA1213 0.68 k 2200 pF (Ceramic type) recommended components to the IC. When VIN = VOUT(S)  1.2 V (VIN = 2.5 V ______ when VOUT(S)  2.0 V), IOUT = 120 mA, connect the ON/OFF pin to the VIN pin. *1. 10 VOUT(S): Specified output voltage value, VOUT(E): Actual output voltage value STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 3. E type, F type Table 7 Item Symbol Conditions Output voltage*1 VOUT(E) Input voltage VIN Current consumption 1 Current consumption during shutdown ISS1 VOUT = VOUT(S)  1.2 ISSS VON/OFF = 0 V  E type F type  ______   0.5 A 2 2.3 3.7 5.3 6.7 8.0 4.3 7.0 9.9 12.6 15.0              60 60 60 mA mA mA mA mA mA mA mA mA mA mV mV mV           3 3 3  V/°C 3 225 240 4.5 7.0 9.3 11.3 13.3 8.4 13.2 17.5 21.4 25.1 30 30 30 VOUT(S)  5E  5 300 300 375 360 kHz kHz 3 3 PFMDuty No load, measure waveform at EXT pin. 15 25 40 % 3 VSH Determine oscillation at EXT pin 1.8   V 2 VSL Determine oscillation stop at EXT pin   0.3 V 2  0.1 A 1 IEXTH EXT pin output current IEXTL Line regulation VOUT1 Load regulation Output voltage temperature coefficient VOUT2 VOUT Ta Oscillation frequency fosc PWM / PFM control switching duty ratio (S-8521 Series) ON/OFF pin (Ta = 25°C unless otherwise specified) Test Min. Typ. Max. Unit Circuit VOUT(S) VOUT(S) VOUT(S) V 3  0.976  1.024 2.5  10.0 V 2 2.5  16.0 V 2  60 100 A 2 S-8520/8521x15 to 24 S-8520/8521x25 to 34 VEXT = VIN  0.4 V S-8520/8521x35 to 44 S-8520/8521x45 to 54 S-8520/8521x55 to 60 S-8520/8521x15 to 24 S-8520/8521x25 to 34 VEXT = 0.4 V S-8520/8521x35 to 44 S-8520/8521x45 to 54 S-8520/8521x55 to 60 VOUT(S)  2.0 V VIN = 2.5 V to 2.94 V VOUT(S)  2.0 V VIN = VOUT(S)  1.2 to 1.4 Load current = 10 A to IOUT  1.25 Ta = 40°C to 85°C Measure waveform at EXT pin.  VOUT(S)  2.4 V VOUT(S)  2.5 V input voltage ON/OFF pin ISH  0.1 input leakage current ISL  0.1  0.1 A 1 Soft start time Overload detection time (E type) Efficiency tss  Time until the EXT pin reaches VIN after dropping VOUT to 0 V.  2.0 4.5 9.2 ms 3 1.3 2.6 4.5 ms 2  90  % 3 External parts tpro EFFI Coil: Diode: Capacitor: Transistor: Base resistance (Rb): Base capacitor (Cb): Unless otherwise indicated, connect the Sumida Corporation CD54 (47 H) Matsushita Electric Industrial Co., Ltd. MA720 (Shottky type) Matsushita Electric Industrial Co., Ltd. TE (16 V, 22 F tantalum type) Toshiba Corporation 2SA1213 0.68 k 2200 pF (Ceramic type) recommended components to the IC. When VIN = VOUT(S)  1.2 V (VIN = 2.5 V ______ when VOUT(S)  2.0 V), IOUT = 120 mA, connect the ON/OFF pin to the VIN pin. *1. VOUT(S): Specified output voltage value, VOUT(E): Actual output voltage value 11 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Test Circuit open 1. EXT VIN A VOUT open ______ ON/OFF VSS Figure 5 Osilloscope 2. A VIN   EXT VOUT ______ ON/OFF VSS Figure 6 3. 0.68 k EXT VIN   2200 pF VOUT  ______ ON/OFF VSS Figure 7 12  V STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Operation 1. Switching control method 1. 1 PWM control (S-8520 Series) The S-8520 Series is a DC-DC converter using a pulse width modulation method (PWM) and features a low current consumption. In conventional PFM DC-DC converters, pulses are skipped when the output load current is low, causing a fluctuation in the ripple frequency of the output voltage, resulting in an increase in the ripple voltage. The switching frequency does not change, although the pulse width changes from 0 to 100% corresponding to each load current. The ripple voltage generated from switching can thus be removed easily through a filter because the switching frequency is constant. And the ripple voltage will be skipped to be low current consumption when the pulse width is 0% or it is no load, input current voltage is high. 1. 2 PWM / PFM switching control (S-8521 Series) S-8521 Series is a DC-DC converter that automatically switches between a pulse width modulation method (PWM) and a pulse frequency modulation method (PFM), depending on the load current, and features low current consumption. The S-8521 Series operates under PWM control with the pulse width duty changing from 25 to 100% in a high output load current area. The S-8521 Series operates under PFM control with the pulse width duty fixed at 25%, and pulses are skipped according to the load current. The oscillation circuit thus oscillates intermittently so that the resultant lower self current consumption prevents a reduction in the efficiency at a low load current. The switching point from PWM control to PFM control depends on the external devices (coil, diode, etc.), input voltage and output voltage. The S-8521 Series is an especially highly efficient DC-DC converter at an output current around 100 A. 13 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 2. Soft start function The S-8520/8521 Series has a built-in soft start-circuit. This circuit enables the output voltage (VOUT) to rise ______ gradually over the specified soft start time (t), when power-on or when the ON/OFF pin is at the “H” level. This prevents the output voltage from overshooting. However, the soft-start function of this IC is not able to perfectly prevent a rush current from flowing to the load (Refer to Figure 8). Since this rush current depends on the input voltage and load conditions, Perform sufficient evaluation with actual device for design. S-8520A33MC (VIN: 0 V4.0 V) 3V VOUT [1 V/div] 0V 1.5 A Rush current [0.5 A/div] 0A t [1 ms/div] Figure 8 3. Waveforms of output voltage and rush current at soft start _______ ON/OFF pin (Shutdown pin) ______ The ON/OFF pin stops or starts step-up operation. ______ Setting the ON/OFF pin to the “L” level stops operation of all the internal circuits and reduces current consumption significantly. The EXT pin’s voltage is set to the VIN voltage level so that the switching transistor is turned off. ______ Do not use the ON/OFF pin in a floating state because it has the structure shown in Figure 9 and is not pulled up ______ or pulled down internally. Do not apply a voltage of between 0.3 V and 1.8 V to the ON/OFF pin because applying ______ such a voltage increases the current consumption. When not using the ON/OFF pin, connect it to the VIN pin. Table 8 ______ ON/OFF pin “H” “L” CR Oscillation Circuit Operation Stop VIN ______ ON/OFF VSS Figure 9 14 Output voltage Set value VSS STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 4. Overload protection circuit (A, C, E types) The A, C and E types of the S-8520/8521 Series have a built-in overload protection circuit. If the output voltage drops under the overload status, the maximum duty status (100%) continues. If this 100% duty status lasts longer than the overload detection time (tpro), the circuit keeps the EXT pin at “H” to protect the switching transistor and inductor. When the overload protection circuit is functioning, the soft start works in the IC for the reference voltage, and the reference voltage rises slowly from 0 V. The reference voltage and the feedback voltage obtained by dividing the output voltage are compared to each other. While the reference voltage is low, the EXT pin keeps “H” and oscillation stops. If the reference voltage rises and exceeds the feedback voltage, oscillation restarts. After oscillation is restarted, if a load is heavy and the EXT pin keeps the “L” level longer than the overload detection time (tpro), the circuit operates again, and the IC enters the intermittent operation mode by repeating the action described above. Once the overload state is off, the IC restarts the normal operation. Waveforms at EXT pin Overload detection time (tpro) Figure 10 5. Protection circuit ON [tss  0.3] Waveforms at EXT pin when the overload protection circuit operates 100% duty cycle The S-8520/8521 Series operates with a maximum duty cycle of 100%. When using the B, D and F types products, which do not have the overload protection circuit, the switching transistor keeps ON continually to supply current to the load, even in cases where the input voltage drops to the set value of output voltage or less. The output voltage in this case is; the voltage subtracting both of the inductance’s DC resistance and the voltage drop by the switching resistor’s ON-resistance, from the input voltage. The A, C and E types that have the overload protection circuit cannot be used for continually supplying current to the load, as described above, because these types enter the intermittent operation mode by the overload protection circuit’s operation, when 100% duty lasts longer than the overload detection time (tpro). 15 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Selection of Products and External Parts 1. Method for selecting series products The S-8520/8521 Series is classified into 12 types, according to the control systems (PWM control and PWM / PFM switching control), the different oscillation frequencies, and set-up of an overload protection circuit. Please select the type for your application according to the following features. 16 1. 1 Control systems Two different control systems are available: PWM control system (S-8520 Series) and PWM / PFM switching control system (S-8521 Series). For applications for which the load current greatly differs between standby and operation, if the efficiency during standby is important, applying the PWM/PFM switching system (S-8321 Series) realizes high efficiency during standby. For applications for which switching noise is critical, applying the PWM control system (S-8320 Series) whereby switching frequency does not change due to load current allows the ripple voltage to be easily suppressed by using a filter. 1. 2 Oscillation frequencies Either oscillation frequency, 180 kHz (A and B types), 60 kHz (C and D types), or 300 kHz (E and F types), can be selected. The A, B, E and F types have high oscillation frequency, how ripple voltage and excellent transient response characteristics. A small inductance can be used for these types because the peak current is low when inducing the same load current. Use of small output capacitors is effective for downsizing devices. The C and D types, whereby lower oscillation frequency realizes smaller self-consumption current, are highly efficient under light loads. In particular, the D type, when combined with a PWM/PFM switching control system, drastically improves the operation efficiency when the output load current is approximately 100 mA. STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 1. 3 Overload protection circuit Types are selectable the S-8520/8521 Series with the overload protection circuit (A, C and E types) or without the overload protection circuit (B, D and F types). By the S-8520/8521 Series with the overload protection circuit (A, C and E types), the switching components and inductor can be protected because the overload protection circuit works and is set to the intermittent mode, in case of overload or load short-circuit. But in case of supplying current to load by using 100% duty cycle, select the S-8520/8521 Series without the overload protection circuit (B, D and F types), according to the conditions of application. The operation voltage differs in 10 V (A, B and E types) or 16 V (B, D and F types) whether the overload protection circuit is available or not. Table 9 shows items for selecting the type according to the requirements of application. Select it matching the marks () for your requirement. Table 9 Item A B The need of overload protection circuit Input voltage exceeds 10 V Focusing on efficiency of light load status (1 mA or less) Using with middle load current (about 200 mA) Using with large load current (about 1 A)    Focusing on the low ripple voltage Focusing on downsizing external parts Remark  S-8520 Series C D E       F A B                                  S-8521 Series C D E              F        : Indispensable condition : Superiority of requirement : Particularly superiority of requirement 17 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 2. Inductor The inductance value (L value) has a strong influence on the maximum output current (IOUT) and efficiency (). The peak current (IPK) increases by decreasing L value and the stability of the circuit improves and IOUT increases. If L value is decreased, the efficiency falls causing a decline in the current drive capacity for the switching transistor, and IOUT decreases. The loss of IPK by the switching transistor decreases by increasing L and the efficiency becomes the maximum at a certain L value. Further increasing L value decreases the efficiency due to the loss of the direct current resistance of the coil. IOUT also decreases. For the S-8520/8521 Series, increasing the inductance value, the output voltage may be unstable in some cases, depending on the conditions of the input voltage, output voltage, and the load current. Perform sufficient evaluation under the actual condition and decide an optimum inductance value. The recommended inductances are 47 H for A, B, C, D types and 22 H for E, F types. Be careful of the allowable inductor current when choosing an inductor. Exceeding the allowable current of the inductor causes magnetic saturation, much lower efficiency and destruction of the IC chip due to a large current. Choose an inductor so that IPK does not exceed the allowable current. IPK in continuous mode is calculated by the following equation: IPK = IOUT  *1. *2. 3. (VOUT  VF*2 )  (VIN  VOUT) 2  fosc*1  L  (VIN  VF*2) fosc: Oscillation frequency VF: Forward voltage of the diode Diode Use an external diode that meets the following requirements :  Its forward voltage is low (Schottky barrier diode is recommended).  Its switching speed is high (50 ns max.).  Its reverse direction voltage is higher than VIN.  Its current rating is higher than IPK. 4. Capacitors (CIN, COUT) A capacitor for the input (CIN) improves efficiency by reducing power impedance and stabilizing the input current. Select the CIN value according to impedance of the power supply to be used. Approximately 47 to 100 F is recommended for the capacitor depending on impedance of the power source and load current value. For a capacitor for output (CL), select a large capacitance with low ESR (Equivalent Series Resistance) for smoothing the ripple voltage. However, capacitor with extremely small ESR such as ceramic capacitor (about 0.3  or less) may destabilize the output voltage, according to the conditions of input and output voltages. A tantalum electrolyte capacitor is recommended. 47 F to 100 F is recommended for the capacitor. 18 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 5. External transistor Enhancement (Pch) MOS FET or bipolar (PNP) MOS FET can be used for external transistor. 5. 1 Enhancement (Pch) MOS FET type The EXT pin of the S-8520/8521 Series is capable of directly driving a Pch MOS FET with a gate capacity around 1000 pF. When using a Pch MOS FET, 2 to 3% higher efficiency is provided because its switching speed is faster and it does not cause power dissipation, compared to PNP bipolar transistors. The important parameters in selecting MOS FETs are the threshold voltage, the breakdown voltage between gate and source, the breakdown voltage between drain and source, the total gate capacity, the on-resistance, and the current ratings. The EXT pin swings from voltages between VIN to VSS. If the input voltage is low, use a MOS FET with the low threshold voltage. If the input voltage is high, use a MOS FET having the breakdown voltage between gate and source higher several volts than the input voltage. Immediately after the power-on or power-off (stopping the step-down operation), the input voltage will be applied between drain and source of the MOS FET. Use the breakdown voltage between drain and source also higher several volts than the input voltage. The total gate capacity and the on-resistance affect efficiency. Power dissipation when charging and discharging the gate capacity by switching operation affects efficiency, in the area of low load current, as the total gate capacity is larger and the input voltage is higher. Select a MOS FET with a small total gate capacity for efficiency at light load. In the area of large load current, efficiency is affected by power dissipation caused by MOS FET’s on-resistance. For efficiency at large load, select a MOS FET having as low on-resistance as possible. As for the current rating, select a MOS FET having the maximum continuous drain current rating higher than IPK. For reference, this document has the data of efficiency. TM6201 by Toyota Industries Corporation for applications with an input voltage of 10 V or less, IRF7606 by International Rectifier Corporation Japan for applications with an input voltage over 10 V (Refer to “ Reference Data”). 19 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 5. 2 Bipolar PNP type Figure 11 shows the sample of circuit diagram using Toshiba Corporation 2SA1213 as the bipolar transistor (PNP). The hFE value and the Rb value of that bipolar transistor determine the driving capacity, which is used for increasing the output current. Toshiba Corporation 2SA1213 VIN Rb VIN Cb EXT Figure 11 The Rb value is given by the following equation: Rb = VIN0.7  Ib 0.4 IEXTL IPK Calculate the necessary base current (Ib) using the (hFE) value of bipolar transistor by the equation, Ib = h , FE and select a smaller Rb value. A small Rb value increases the output current, but it also decreases efficiency. Determine the optimum value through experiment, since the base current may flow on the pulse, or voltage may drop due to wiring resistance. In addition, if speed-up capacitor Cb is connected in parallel with resistor Rb, as shown in Figure 11, the loss in switching will be reduced, leading to higher efficiency. Determine the Cb value using the following equation: Cb  1 2    Rb  fosc  0.7 Select the Cb value after performing sufficient evaluation since the optimum Cb value differs depending upon the characteristics of the bipolar transistor. 20 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Standard Circuits 1. Using a bipolar transistor L Tr VIN Cb Rb EXT VIN  CIN SD Oscillation circuit Reference voltage source with soft start VOUT  PWM control or PWM / PFM switching control circuit  COUT  VON/OFF ______ ______ ON/OFF VSS Figure 12 2. Using a Pch MOS FET transistor L Tr VIN EXT VIN  CIN SD Oscillation circuit Reference voltage source with soft start  PWM control or PWM / PFM switching control circuit  VOUT  COUT VON/OFF ______ ______ ON/OFF VSS Figure 13 Caution The above connection diagram and constant will not guarantee successful operation. Perform through evaluation using the actual application to set the constant. 21 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Precautions  Mount the external capacitors, the diode and the coil as close as possible to the IC, and secure grounding at a single location.  Characteristics ripple voltage and spike noise occur in IC containing switching regulators. Moreover, rush current flows at the time of a power supply injection. Because these largely depend on the coil, the capacitor and impedance of power supply used, fully check them using an actually mounted model.  The overload protection circuit of this IC performs the protective function by detecting the maximum duty time (100 %). In choosing the components, make sure that over currents generated by short-circuits in the load, etc., will not surpass the allowable dissipation of the switching transistor and inductor.  Make sure that dissipation of the switching transistor (especially at a high temperature) does not exceed the allowable dissipation of the package.  Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit.  ABLIC Inc. claims no responsibility for any and all disputes arising out of or in connection with any infringement by products including this IC of patents owned by a third party. 22 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Application Circuits 1. External adjustment of output voltage In the S-8550/8521 Series, by adding external resistors (RA, RB) and a capacitor (CFB), the output voltage can be adjusted or be set freely in the range of 1.5 to 6.0 V, as shown in Figure 14. Temperature gradient can be given by inserting a thermistor in series to RA and RB. OUT EXT CC S-8520/8521 Series VIN PWM control or PWM /  PFM switching control unit  ______ ON/OFF Oscillation Circuit   Reference voltage source with soft start RA VOUT R1 D1 R2 RB   VSS Figure 14 Caution The above connection diagram and constant will not guarantee successful operation. Perform through evaluation using the actual application to set the constant. The S-8520/8521 Series have an internal impedance of R1 and R2 between the VOUT pin and the VSS pin, as shown in Figure 14. Therefore, OUT (the output voltage) is determined by the output voltage value (VOUT) of the S-8520/8521 Series, and the ratio of the parallel resistance value of external resistance (RB) and internal resistances (R1  R2) of the IC, to external resistance (RA). The output voltage is expressed by the following equation: *1 OUT = VOUT  VOUT  RA  (RB // (R1  R2)) *1. // shows the combined resistance in parallel. The voltage accuracy of the OUT set by resistances (RA and RB) is not only affected by the IC’s output voltage accuracy (VOUT 2.4 %), but also by the absolute precision of external resistances (RA and RB) in use and the absolute value deviations of internal resistances (R1 and R2) in the IC. Let us designate the maximum deviations of the absolute value of RA and RB by RA max. and RB max., respectively, the minimum deviations by RA min. and RB min., respectively, and the maximum and minimum deviations of the absolute value of R1 and R2 in the IC by (R1  R2) max. and (R1  R2) min., respectively. Then, the minimum deviation value OUT min. and the maximum deviation value OUT max. of the OUT are expressed by the following equations: OUT min. = VOUT  0.976  VOUT  0.976  RA min.  (RB max. // (R1  R2) max.) OUT max. = VOUT  1.024  VOUT  1.024  RA max.  (RB min. // (R1  R2) min.) 23 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series The voltage accuracy of the OUT cannot be made higher than the output voltage accuracy (VOUT 2.4%) of the IC itself, without adjusting the RA and RB involved. The closer the voltage value of the output OUT and the output voltage value (VOUT) of the IC are brought to one other, the more the output voltage remains immune to deviations in the absolute accuracy of RA and RB and the absolute value of R1 and R2 in the IC. In particular, to suppress the influence of deviations in R1 and R2 in the IC, a major contributor to deviations in the OUT, the RA and RB must be limited to a much smaller value than that of R1 and R2 in the IC. On the other hand, a reactive current flows through RA and RB. This reactive current must be reduced to a negligible value with respect to the load current in the actual use of the IC so that the efficiency characteristics will not be degraded. This requires that the value of RA and RB be made sufficiently large. However, too large a value (more than 1 M) for the RA and RB would make the IC vulnerable to external noise. Check the influence of this value on actual equipment. There is a tradeoff between the voltage accuracy of the OUT and the reactive current. This should be taken into consideration based on the requirements of the intended application. Deviations in the absolute value of the internal resistances (R1 and R2) in the IC vary with the output voltage of the S-8520/8521 Series, and are broadly classified as follows: Table 10 Output voltage Deviations in the absolute value of R1 and R2 in the IC 1.5 V to 2.0 V 2.1 V to 2.5 V 2.6 V to 3.3 V 3.4 V to 4.9 V 5.0 V to 6.0 V 5.16 M to 28.9 M 4.44 M to 27.0 M 3.60 M to 23.3 M 2.44 M to 19.5 M 2.45 M to 15.6 M When a value of R1  R2 given by the equation indicated below is taken in calculating the voltage value of the output OUT, a median voltage deviation will be obtained for the OUT. R1  R2 = 2  (1  maximum deviation in absolute value of R1 and R2  1  minimum deviation in absolute value of R1 and R2) Moreover, add a capacitor (CC) in parallel to the external resistance (RA) in order to avoid output oscillations and other types of instability (Refer to Figure 14). Make sure that CC is larger than the value given by the following equation: CC [F]  1  (2    RA []  7.5 kHz) If a large CC value is selected, a longer soft start time than the one set up in the IC will be set. Caution 24 The above connection diagram and constant will not guarantee successful operation. Perform through evaluation using the actual application to set the constant. STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Characteristics (Typical Data) Examples of major parameters characteristics (1) Current consumption (ISS1)-Input voltage (VIN) (fosc = 60 kHz) 20 ISS1 [A] ISS1 [A] Ta = 25C 10 Ta = 85C 5 0 4 6 8 10 VIN [V] 12 30 Ta = 25C 20 Ta = 85C Ta = 40C 10 Ta = 40C 2 (fosc = 180 kHz) 40 15 14 0 16 2 4 6 8 10 VIN [V] 12 14 16 (fosc = 300 kHz) 60 ISS1 [A] 50 Ta = 85C 40 30 Ta = 25C 20 Ta = 40C 10 0 2 4 6 8 10 VIN [V] 12 14 16 (2) Oscillation frequency (fosc)-Input voltage (VIN) (fosc = 60 kHz) 80 210 70 200 fosc [kHz] fosc [kHz] Ta = 25C 65 Ta = 85C 60 55 Ta = 40C 50 45 40 (fosc = 180 kHz) 220 75 2 4 6 8 10 VIN [V] 12 14 16 190 180 170 160 150 140 Ta = 25C Ta = 85C 2 4 6 8 10 VIN [V] Ta = 40C 12 14 16 (fosc = 300 kHz) 360 340 fosc [kHz] 1. 320 300 Ta = 25C 280 Ta = 40C 260 240 Ta = 85C 2 4 6 8 10 VIN [V] 12 14 16 25 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series (4) EXT pin output current “L” (IEXTL)Input voltage (VIN) 60 60 50 50 40 Ta = 40C Ta = 25C 30 20 10 0 IEXTL [mA] IEXTH [mA] (3) EXT pin output current “H” (IEXTH)Input voltage (VIN) 4 6 8 10 VIN [V] 12 14 40 Ta = 25C 30 Ta = 85C 20 10 Ta = 85C 2 Ta = 40C 0 16 2 4 6 8 10 VIN [V] 12 14 16 (5) Soft start time (tSS)-Input voltage (VIN) (fosc = 60 kHz) 25 Ta = 40C Ta = 25C 15 10 Ta = 85C 4 6 8 10 VIN [V] 8 tSS [ms] 12 14 16 (fosc = 300 kHz) 10 Ta = 40C Ta = 85C 6 4 Ta = 25C 2 0 26 2 Ta = 40C 15 Ta = 25C 10 5 5 0 2 20 tSS [ms] tSS [ms] 20 (fosc = 180 kHz) 25 4 6 8 10 VIN [V] 12 14 16 0 Ta = 85C 2 4 6 8 10 VIN [V] 12 14 16 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series (6) Overload detection time (tpro)-Input voltage (VIN) (fosc = 60 kHz) 26 7 22 6 Ta = 85C 18 14 Ta = 40C 10 6 4 6 tpro [ms] 8 10 VIN [V] 12 14 Ta = 25C 4 2 16 2 4 6 8 10 VIN [V] 12 14 16 Ta = 85C 3 Ta = 25C Ta = 40C 2 2 4 6 8 10 VIN [V] 12 14 16 ______ ______ (7) ON/OFF pin input voltage “H” (VSH)Input voltage (VIN) 1.8 1.6 (8) ON/OFF pin input voltage “L” (VSL)Input voltage (VIN) 1.7 1.5 Ta = 40C 1.4 1.3 Ta = 25C 1.2 VSL [V] VSH [V] Ta = 40C 5 (fosc = 300 kHz) 4 1 Ta = 85C 3 Ta = 25C 2 (fosc = 180 kHz) 8 tpro [ms] tpro [ms] 30 1.0 0.8 0.4 2 4 6 8 10 VIN [V] 12 Ta = 40C Ta = 25C 0.9 0.7 Ta = 85C 0.6 1.1 0.5 14 16 0.3 Ta = 85C 2 4 6 8 10 VIN [V] 12 14 16 27 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series (9) Output voltage (VOUT)-Input voltage (VIN) S-8521B50MC IOUT = 0.1 mA IOUT = 500 mA VOUT [V] 3.08 3.07 3.06 3.05 3.04 3.03 3.02 3.01 3.00 2.99 2.98 (Ta = 25°C) IOUT = 100 mA 2 4 6 8 10 VIN [V] VOUT [V] S-8521F33MC 28 3.38 3.37 3.36 3.35 3.34 3.33 3.32 3.31 3.30 3.29 3.28 12 14 16 (Ta = 25°C) IOUT = 0.1 mA IOUT = 100 mA IOUT = 500 mA 2 4 6 8 10 VIN [V] 12 14 16 5.08 5.07 5.06 5.05 5.04 5.03 5.02 5.01 5.00 4.99 4.98 (Ta = 25°C) IOUT = 0.1 mA IOUT = 500 mA IOUT = 100 mA 2 4 6 8 10 VIN [V] S-8521F50MC VOUT [V] VOUT [V] S-8521B30MC 5.07 5.06 5.05 5.04 5.03 5.02 5.01 5.00 4.99 4.98 4.97 12 14 16 (Ta = 25°C) IOUT = 0.1 mA IOUT = 100 mA IOUT = 500 mA 2 4 6 8 10 VIN [V] 12 14 16 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 2. Transient Response Characteristics 2. 1 Power-on (IOUT: no load) (1) S-8520/8521C30MC (VIN = 0 V3.6 V) (VIN = 0 V9.0 V) 10 V 10 V VIN [2.5 V/div] VIN [2.5 V/div] 0V 0V 3V 3V VOUT [1 V/div] 0V VOUT [1 V/div] 0V t [2 ms/div] t [2 ms/div] (2) S-8520/8521A30MC (VIN = 0 V9.0 V) (VIN = 0 V3.6 V) 10 V 10 V VIN [2.5 V/div] VIN [2.5 V/div] 0V 0V 3V 3V VOUT [1 V/div] 0V VOUT [1 V/div] 0V t [1 ms/div] t [1 ms/div] (3) S-8520/8521E33MC (VIN = 0 V4.0 V) (VIN = 0 V9.0 V) 10 V 10 V VIN [2.5 V/div] VIN [2.5 V/div] 0V 0V 3V 3V VOUT [1 V/div] VOUT [1 V/div] 0V 0V t [1 ms/div] t [1 ms/div] 29 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 2. 2 ______ Shutdown pin response (VON/OFF = 0 V1.8 V, IOUT = No load) (1) S-8520/8521C30MC (VIN = 3.6 V) 3V (VIN = 9.0 V) 3V VON / OFF VON / OFF [1 V/div] [1 V/div] 0V 0V 3V 3V VOUT [1 V/div] VOUT [1 V/div] 0V 0V t [2 ms/div] t [2 ms/div] (2) S-8520/8521A30MC (VIN = 3.6 V) (VIN = 9.0 V) 3V 3V VON / OFF VON / OFF [1 V/div] [1 V/div] 0V 0V 3V 3V VOUT [1 V/div] VOUT [1 V/div] 0V 0V t [1 ms/div] t [1 ms/div] (3) S-8520/8521E33MC (VIN = 4.0 V) (VIN = 9.0 V) 3V 3V VON / OFF VON / OFF [1 V/div] 0V [1 V/div] 0V 3V 3V VOUT [1 V/div] 0V VOUT [1 V/div] 0V t [1 ms/div] 30 t [1 ms/div] STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 2. 3 Supply voltage variation (VIN = 4 V9 V, 9 V4 V) (1) S-8520/8521C30MC (2) S-8520/8521C30MC (IOUT = 500 mA) (IOUT = 10 mA) 10 V 10 V VIN [2.5 V/div] VIN [2.5 V/div] 0V 0V VOUT [0.2 V/div] VOUT [0.2 V/div] t [0.5 ms/div] t [0.5 ms/div] (3) S-8520/8521A30MC (4) S-8520/8521A30MC (IOUT = 10mA) 10 V (IOUT = 500 mA) 10 V VIN [2.5 V/div] VIN [2.5 V/div] 0V 0V VOUT [0.2 V/div] VOUT [0.2 V/div] t [0.5 ms/div] t [0.5 ms/div] (5) S-8520/8521E33MC (6) S-8520/8521E33MC (IOUT = 500 mA) (IOUT = 10 mA) 10 V 10 V VIN [2.5 V/div] VIN [2.5 V/div] 0V 0V VOUT [0.2 V/div] VOUT [0.2 V/div] t [0.5 ms/div] t [0.5 ms/div] 31 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 2. 4 Load variation (1) S-8520/8521C30MC (VIN = 3.6 V, IOUT = 0.1 mA500 mA) (VIN = 3.6 V, IOUT = 500 mA0.1 mA) 500 mA 500 mA IOUT 0.1 mA IOUT 0.1 mA VOUT [0.1 V/div] VOUT [0.1 V/div] t [0.1 ms/div] t [5 ms/div] (2) S-8520/8521A30MC (VIN = 3.6 V, IOUT = 0.1 mA500 mA) (VIN = 3.6 V, IOUT = 500 mA0.1 mA) 500 mA 500 mA IOUT 0.1 mA IOUT 0.1 mA VOUT [0.1 V/div] VOUT [0.1 V/div] t [0.1 ms/div] t [10 ms/div] (3) S-8520/8521E33MC (VIN = 4.0 V, IOUT = 0.1 mA500 mA) 500 mA 500 mA IOUT 0.1 mA IOUT 0.1 mA VOUT [0.1 V/div] VOUT [0.1 V/div] t [0.1 ms/div] 32 (VIN = 4.0 V, IOUT = 500 mA0.1 mA) t [5 ms/div] STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series  Reference Data This reference data is intended to help you select peripheral components to be externally connected to the IC. Therefore, this information provides recommendations on external components selected with a view to accommodating a wide variety of IC applications. Characteristic data is duly indicated in the table below. Table 11 External parts for efficiency data Product name Output voltage Inductor Transistor Diode Output capacitor Application S-8520B30MC 3.0 V CD105 / 47 H MA737 47 F IOUT  1 A, VIN  10 V TM6201 S-8520F33MC D62F / 22 H MA720 IOUT  0.5 A, VIN  10 V 3.3 V 22 F S-8520F33MC CDH113 / 22 H IRF7606 MA737 IOUT  1 A, VIN  16 V IOUT  0.5 A, VIN  10 V, S-8521D30MC TM6201 With equipment standby mode CD54 / 47 H MA720 47 F  2 IOUT  0.5 A, VIN  16 V, S-8521D30MC IRF7606 With equipment standby mode 3.0 V IOUT  1 A, VIN  10 V, S-8521B30MC TM6201 With equipment standby mode CD105 / 47 H MA737 47 F IOUT  1 A, VIN  16 V, S-8521B30MC IRF7606 With equipment standby mode IOUT  0.5 A, VIN  10 V, S-8521F33MC D62F / 22 H TM6201 MA720 With equipment standby mode 3.3 V 22 F IOUT  1 A, VIN  16 V, S-8521F33MC CDH113 / 22 H IRF7606 MA737 With equipment standby mode S-8520B50MC CD54 / 47 H TM6201 MA720 IOUT  0.5 A, VIN  10 V 47 F S-8520B50MC CD105 / 47 H IRF7606 MA737 IOUT  1 A, VIN  16 V S-8520F50MC D62F / 22 H TM6201 MA720 IOUT  0.5 A, VIN  10 V 22 F S-8520F50MC CDH113 / 22 H IRF7606 MA737 IOUT  1 A, VIN  16 V IOUT  0.5 A, VIN  10 V, S-8521D50MC CD54 / 47 H TM6201 MA720 With equipment standby mode 47 F  2 IOUT  1 A, VIN  16 V, S-8521D50MC CD105 / 47 H IRF7606 MA737 With equipment standby mode 5.0 V IOUT  0.5 A, VIN  10 V, S-8521B50MC CD54 / 47 H TM6201 MA720 With equipment standby mode 47 F IOUT  1 A, VIN  16 V, S-8521B50MC CD105 / 47 H IRF7606 MA737 With equipment standby mode IOUT  0.5 A, VIN  10 V, S-8521F50MC D62F / 22 H TM6201 MA720 With equipment standby mode 22 F IOUT  1 A, VIN  16 V, S-8521F50MC CDH113 / 22 H IRF7606 MA737 With equipment standby mode 33 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series Table 12 Product name External parts for Ripple data Output voltage Inductor Transistor Rb Cb Diode 3.0 V CD105 / 47 H 2SA1213 680  2200 pF MA720 S-8520D30MC S-8521D30MC S-8520B30MC S-8521B30MC S-8520F33MC S-8521F33MC S-8520D50MC S-8521D50MC S-8520B50MC S-8521B50MC S-8520F50MC S-8521F50MC 47 F  2 22 F  2 3.3 V CDH113 / 22 H IRF7606     MA737 CD105 / 47 H 2SA1213 680  2200 pF MA720 Inductor Diode Output capacity External transistor (Bipolar PNP) 22 F  2 5.0 V CDH113 / 22 H Product name CD54 CD105 CDH113 D62F MA720 MA737 F93 TE 2SA1213 TM6201 External transistor (MOS FET) IRF7606 34 22 F 47 F  2 Table 13 Component Output capacitor IRF7606     MA737 22 F Performance Data Maximum allowable Diameter current 0.37  0.72 A 5.8 mm 47 H Sumida Corporation 0.17  1.28 A 10.0 mm 0.09  1.44 A 11.0 mm 22 H Toko Ink. 0.25  0.70 A 6.0 mm Forward current 500 mA (at V = 0.55 V) Matsushita Electric F Industrial Co., Ltd. Forward current 1.5 A (at VF = 0.5 V) Nichicon Corporation  Matsushita Electric  Industrial Co., Ltd. VCEO: 50 V max., IC: 2 A max., hFE: 120 to 240, Toshiba Corporation SOT-89-3 package VGS: 12 V max., ID: 2 A max., Vth: －0.7 V min., Toyota Industries Ciss: 320 pF typ., Ron: 0.25  max. (VGS = 4.5 V), Corporation SOT-89-3 package VGS: 20 V max., ID: 2.4 A max., Vth: 1 V min., International Rectifier Ciss: 470 pF typ., Ron: 0.15  max. (VGS = 4.5 V), Corporation Micro 8 package Manufacturer name “L” value DC resistance Height 4.5 mm 5.4 mm 3.7 mm 2.7 mm STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series Efficiency Characteristics: Output current (IOUT)-Efficiency (EFFI) (1) S-8520B30MC (CD105 / 47 H, TM6201) 100 EFFI [%] 90 80 70 60 50 0.01 VIN = 3.6 V VIN = 9.0 V 0.1 1 10 IOUT [mA] 100 1000 (2) S-8520F33MC (D62F / 22 H, TM6201) 100 80 VIN = 9 V VIN = 6 V VIN = 4 V 100 90 EFFI [%] EFFI [%] 90 70 50 0.01 80 (CDH113 / 22 H, IRF7606) VIN = 14 V VIN = 9 V VIN = 6 V VIN = 4 V 70 60 60 0.1 1 10 IOUT [mA] 100 50 0.01 1000 0.1 1 10 IOUT [mA] 100 1000 (3) S-8521D30MC (CD54 / 47 H, TM6201) 90 90 80 80 70 VIN = 3.6 V VIN = 9.0 V 60 50 0.01 0.1 1 10 IOUT [mA] 100 (CD54 / 47 H, IRF7606) 100 EFFI [%] EFFI [%] 100 70 VIN = 3.6 V VIN = 9.0 V 60 50 0.01 1000 0.1 (4) S-8521B30MC (CD105 / 47 H, TM6201) 100 90 90 80 80 70 VIN = 3.6 V VIN = 9.0 V 60 50 0.01 0.1 1 10 IOUT [mA] 100 1000 1 10 IOUT [mA] 100 1000 (CD105 / 47 H, IRF7606) 100 EFFI [%] EFFI [%] 1. 70 VIN = 3.6 V VIN = 9.0 V 60 50 0.01 0.1 1 10 IOUT [mA] 100 1000 35 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series (5) S-8521F33MC (D62F / 22 H, TM6201) 100 80 VIN = 9 V VIN = 6 V VIN = 4 V 90 EFFI [%] EFFI [%] 90 100 70 80 VIN = 14 V VIN = 9 V VIN = 6 V VIN = 4 V 70 60 60 50 0.01 (CDH113 / 22 H, IRF7606) 0.1 1 10 IOUT [mA] 100 50 0.01 1000 0.1 1 10 IOUT [mA] 100 1000 (6) S-8520B50MC (CD54 / 47 H, TM6201) 100 90 90 80 80 EFFI [%] EFFI [%] 100 70 VIN = 6.0 V VIN = 9.0 V 60 50 0.01 0.1 1 10 IOUT [mA] 100 (CD105 / 47 H, IRF7606) VIN = 14 V VIN = 9 V VIN = 6 V 70 60 50 0.01 1000 0.1 1 10 IOUT [mA] 100 1000 (7) S-8520F50MC (D62F / 22 H, TM6201) 100 VIN = 9 V VIN = 6 V 90 EFFI [%] EFFI [%] 90 80 70 60 50 0.01 (CDH113 / 22 H, IRF7606) 100 80 VIN = 14 V VIN = 9 V VIN = 6 V 70 60 0.1 1 10 IOUT [mA] 100 50 0.01 1000 0.1 1 10 IOUT [mA] 100 1000 (8) S-8521D50MC (CD54 / 47 H, TM6201) 100 90 EFFI [%] EFFI [%] 90 80 70 VIN = 6.0 V VIN = 9.0 V 60 50 0.01 36 (CD105 / 47 H, IRF7606) 100 0.1 1 10 IOUT [mA] 100 1000 80 70 VIN = 14 V VIN = 9 V VIN = 6 V 60 50 0.01 0.1 1 10 IOUT [mA] 100 1000 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series (9) S-8521B50MC (CD54 / 47 H, TM6201) 100 100 90 EFFI [%] EFFI [%] 90 80 70 50 0.01 0.1 1 10 IOUT [mA] 100 VIN = 14 V VIN = 9 V VIN = 6 V 80 70 60 VIN = 6.0 V VIN = 9.0 V 60 (CD105 / 47 H, IRF7606) 50 0.01 1000 0.1 (10) S-8521F50MC (D62F / 22 H, TM6201) 100 VIN = 9 V VIN = 6 V 90 EFFI [%] EFFI [%] 90 80 70 10 IOUT [mA] 100 1000 (CDH113 / 22 H, IRF7606) VIN = 14 V VIN = 9 V VIN = 6 V 80 70 60 60 50 0.01 100 1 0.1 1 10 IOUT [mA] 100 1000 50 0.01 0.1 1 10 IOUT [mA] 100 1000 37 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 2. Ripple Voltage Characteristics: Ripple voltage (Vrip)-Input voltage (VIN) (L: CD105 / 47 H, Tr: 2SA1213, SBD: MA720) (1) S-8520D30MC (2) S-8521D30MC (COUT = 47 F2) 240 200 IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA 160 Vrip [mV] Vrip [mV] 200 120 80 40 0 2 4 6 8 10 VIN [V] 12 14 Vrip [mV] Vrip [mV] IOUT = 100 mA IOUT = 0.1 mA 120 80 6 8 10 VIN [V] 12 14 16 (COUT = 22 F2) 160 IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA 120 80 40 2 4 6 8 10 VIN [V] 12 14 0 16 (5) S-8520F33MC 2 4 6 8 10 VIN [V] 12 14 16 (6) S-8521F33MC (COUT = 22 F) 240 (COUT = 22 F) 240 200 200 160 120 Vrip [mV] IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA 120 80 40 40 2 4 6 8 10 VIN [V] (7) S-8520D50MC 14 120 2 4 6 8 10 VIN [V] 12 14 16 (8) S-8521D50MC (COUT = 47 F2) 240 200 IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA 160 0 16 (COUT = 47 F2) 240 200 12 IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA 160 80 Vrip [mV] Vrip [mV] 4 200 IOUT = 500 mA 160 80 IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA 160 120 80 40 40 0 2 240 40 Vrip [mV] 80 (4) S-8521B30MC 200 38 120 0 16 (COUT = 22 F2) 240 0 IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA 160 40 (3) S-8520B30MC 0 (COUT = 47 F2) 240 2 4 6 8 10 VIN [V] 12 14 16 0 2 4 6 8 10 VIN [V] 12 14 16 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series (9) S-8520B50MC (COUT = 22 F2) 240 (10) S-8521B50MC 200 IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA 160 120 Vrip [mV] Vrip [mV] 200 80 2 4 6 8 10 VIN [V] 12 14 80 200 4 6 8 10 VIN [V] Vrip [mV] 120 80 12 14 16 (COUT = 22 F) 240 200 IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA 160 2 (12) S-8521F50MC (COUT = 22 F) 240 Vrip [mV] IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA 120 0 16 (11) S-8520F50MC IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA 160 120 80 40 40 0 160 40 40 0 (COUT = 22 F2) 240 2 4 6 8 10 VIN [V] 12 14 16 0 2 4 6 8 10 VIN [V] 12 14 16 39 STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_02 S-8520/8521 Series 3. PWM / PFM switching characteristics: Input voltage (VIN)-Output current (IOUT) (1) S-8521D30MC (2) S-8521B30MC 14 10 VIN [V] VIN [V] 14 6 6 2 1 10 IOUT [mA] 100 2 1 1000 (3) S-8521F33MC VIN [V] VIN [V] 1000 100 1000 100 1000 10 2 1 10 IOUT [mA] 100 1000 (5) S-8521B50MC 1 10 IOUT [mA] (6) S-8521F50MC 14 VIN [V] 14 VIN [V] 100 6 6 10 10 6 6 40 IOUT [mA] 14 10 2 10 (4) S-8521D50MC 14 2 10 1 10 IOUT [mA] 100 1000 2 1 10 IOUT [mA] 2.9±0.2 1.9±0.2 4 5 1 2 +0.1 0.16 -0.06 3 0.95±0.1 0.4±0.1 No. MP005-A-P-SD-1.3 TITLE SOT235-A-PKG Dimensions No. MP005-A-P-SD-1.3 ANGLE UNIT mm ABLIC Inc. 4.0±0.1(10 pitches:40.0±0.2) +0.1 ø1.5 -0 +0.2 ø1.0 -0 2.0±0.05 0.25±0.1 4.0±0.1 1.4±0.2 3.2±0.2 3 2 1 4 5 Feed direction No. MP005-A-C-SD-2.1 TITLE SOT235-A-Carrier Tape No. MP005-A-C-SD-2.1 ANGLE UNIT mm ABLIC Inc. 12.5max. 9.0±0.3 Enlarged drawing in the central part ø13±0.2 (60°) (60°) No. MP005-A-R-SD-1.1 SOT235-A-Reel TITLE No. MP005-A-R-SD-1.1 ANGLE QTY. UNIT mm ABLIC Inc. 3,000 Disclaimers (Handling Precautions) 1. All the information described herein (product data, specifications, figures, tables, programs, algorithms and application circuit examples, etc.) is current as of publishing date of this document and is subject to change without notice. 2. The circuit examples and the usages described herein are for reference only, and do not guarantee the success of any specific mass-production design. ABLIC Inc. is not liable for any losses, damages, claims or demands caused by the reasons other than the products described herein (hereinafter "the products") or infringement of third-party intellectual property right and any other right due to the use of the information described herein. 3. ABLIC Inc. is not liable for any losses, damages, claims or demands caused by the incorrect information described herein. 4. Be careful to use the products within their ranges described herein. Pay special attention for use to the absolute maximum ratings, operation voltage range and electrical characteristics, etc. ABLIC Inc. is not liable for any losses, damages, claims or demands caused by failures and / or accidents, etc. due to the use of the products outside their specified ranges. 5. Before using the products, confirm their applications, and the laws and regulations of the region or country where they are used and verify suitability, safety and other factors for the intended use. 6. When exporting the products, comply with the Foreign Exchange and Foreign Trade Act and all other export-related laws, and follow the required procedures. 7. The products are strictly prohibited from using, providing or exporting for the purposes of the development of weapons of mass destruction or military use. ABLIC Inc. is not liable for any losses, damages, claims or demands caused by any provision or export to the person or entity who intends to develop, manufacture, use or store nuclear, biological or chemical weapons or missiles, or use any other military purposes. 8. The products are not designed to be used as part of any device or equipment that may affect the human body, human life, or assets (such as medical equipment, disaster prevention systems, security systems, combustion control systems, infrastructure control systems, vehicle equipment, traffic systems, in-vehicle equipment, aviation equipment, aerospace equipment, and nuclear-related equipment), excluding when specified for in-vehicle use or other uses by ABLIC, Inc. Do not apply the products to the above listed devices and equipments. ABLIC Inc. is not liable for any losses, damages, claims or demands caused by unauthorized or unspecified use of the products. 9. In general, semiconductor products may fail or malfunction with some probability. The user of the products should therefore take responsibility to give thorough consideration to safety design including redundancy, fire spread prevention measures, and malfunction prevention to prevent accidents causing injury or death, fires and social damage, etc. that may ensue from the products' failure or malfunction. The entire system in which the products are used must be sufficiently evaluated and judged whether the products are allowed to apply for the system on customer's own responsibility. 10. The products are not designed to be radiation-proof. The necessary radiation measures should be taken in the product design by the customer depending on the intended use. 11. The products do not affect human health under normal use. However, they contain chemical substances and heavy metals and should therefore not be put in the mouth. The fracture surfaces of wafers and chips may be sharp. Be careful when handling these with the bare hands to prevent injuries, etc. 12. When disposing of the products, comply with the laws and ordinances of the country or region where they are used. 13. The information described herein contains copyright information and know-how of ABLIC Inc. The information described herein does not convey any license under any intellectual property rights or any other rights belonging to ABLIC Inc. or a third party. Reproduction or copying of the information from this document or any part of this document described herein for the purpose of disclosing it to a third-party is strictly prohibited without the express permission of ABLIC Inc. 14. For more details on the information described herein or any other questions, please contact ABLIC Inc.'s sales representative. 15. This Disclaimers have been delivered in a text using the Japanese language, which text, despite any translations into the English language and the Chinese language, shall be controlling. 2.4-2019.07 www.ablic.com