BD9701T

Single-chip Type with Built-in FET Switching Regulator Series Simple Step-down Switching Regulators with Built-in Power MOSFET BD9701FP/CP-V5/T/T-V5, BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 No.09027EBT01 ●Description The BD9701/BD9703/BD9702 are single-channel step-down switching regulator capable of PWM operation. The Pch MOS FET is built in for high efficiency in small load area.Lower electricity consumption of operating current 4mA (Typ) and stand-by current 0uA(Typ) is realized by adopting Bi-CMOS process. ●Features 1) Maximum switching current: 1.5A(BD9701/BD9703), 3A(BD9702) 2) Built-in Pch FET ensures high efficiency 3) Output voltage adjustable via external resistors 4) High switching frequency: 100kHz (BD9701), 300kHz(BD9703), 110kHz(BD9702) 5) Overcurrent and thermal shutdown protection circuits built in 6) ON/OFF control via STBY pin 7) Small surface mount TO252-5 package (only BD9701FP, BD9703FP) ●Applications TVs, printers, DVD players, projectors, gaming devices, PCs, car audio/navigation systems, ETCs, communication equipment, AV products, office equipment, industrial devices, and more. ●Line Up BD9701FP/CP-V5/T/T-V5 BD9703FP/CP-V5/T/T-V5 Output Current Input Voltage Switching Frequency External Synchronization Stand-by Function Operating Temperature Package 100kHz (fixed) 1.5A 8 or Vo+3 ～ 36V 300kHz (fixed) × ○ -40 ～ +85℃ TO252-5/TO220CP-V5/TO220FP-5/TO220FP-5 (V5) TO220CP-V5/TO220FP-5/TO220FP-5 (V5) BD9702CP-V5/T/T-V5 3.0A 110kHz (fixed) www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 1/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 ●Absolute Maximum Ratings (Ta＝25℃) Parameter Supply Voltage (VCC-GND) STBY-GND OUT-GND INV-GND Maximum Switching Current Power Dissipation Operating Temperature Storage Temperature *1 Without external heat sink, the power dissipation reduces by 6.4mW/℃ over 25℃. *2 Without external heat sink, the power dissipation reduces by 16.0mW/℃ over 25℃. Reduced by 160mW/℃, when mounted on Infinity size heatsink. Technical Note Symbol VCC VSTBY VO VINV BD9701/BD9703 BD9702 TO252 TO220 Iout Ratings 36 36 36 10 1.5 3 0.8 (*1) 2(*2) -40～+85 -55～+150 Unit V V V V A Pd Topr Tstg W ℃ ℃ ●Operating Conditions(Ta=-40～+85℃) Parameter Input Voltage Output Voltage Symbol VCC Vo Limit MIN 8.0 or Vo+3(*3) 1.0 TYP MAX 35.0 32 Unit V V *3The minimum value of an input voltage is the higher either 8.0V or Vo+3 ●Electrical Characteristics ○BD9701FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V) Parameter Output ON Resistance Efficiency Switching Frequency Load Regulation Line Regulation Over Current Protection Limit INV Pin Threshold Voltage INV Pin Threshold Voltage Thermal Variation INV Pin Input Current STBY Pin Threshold Voltage STBY Pin Input Current Circuit Current Stand-by Current This product is not designed to be resistant to radiation. Symbol Ron η fosc ΔVOLOAD ΔVOLINE Iocp VINV ΔVINV IINV ON OFF VSTBYON VSTBYOFF Istby Icc Ist Limit MIN 80 1.6 0.98 2.0 -0.3 5 TYP 1.0 86 100 10 40 1.00 ±0.5 1 25 4 0 MAX 1.5 120 40 100 1.02 36 0.3 50 12 5 Unit Ω % kHz mV mV A V % μA V V μA mA μA Conditions design guarantee Io＝0.5A design guarantee VCC=20V,Io=0.5～1.5A VCC=10～30V,Io=1.0A Tj=0～85℃ design guarantee VINV=1.0V STBY=3V STBY＝0V www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 2/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 ●Electrical Characteristics ○BD9703FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V) Parameter Output ON Resistance Efficiency Switching Frequency Load Regulation Line Regulation Over Current Protection Limit INV Pin Threshold Voltage INV Pin Threshold Voltage Thermal Variation INV Pin Input Current STBY Pin Threshold Voltage STBY Pin Input Current Circuit Current Stand-by Current ON OFF Symbol Ron η fosc ΔVOLOAD ΔVOLINE Iocp VINV ΔVINV IINV VSTBYON VSTBYOFF Istby Icc Ist Limit MIN 270 1.6 0.98 2.0 -0.3 5 TYP 1.0 86 300 10 40 1.00 ±0.5 1 25 5 0 MAX 1.5 330 40 100 1.02 36 0.3 50 12 5 Unit Ω % kHz mV mV A V % μA V V μA mA μA STBY=3V Technical Note Conditions design guarantee Io＝0.5A design guarantee VCC=20V,Io=0.5～1.5A VCC=10～30V,Io=1.0A Tj=0～85℃ design guarantee VINV=1.0V STBY＝0V ●Electrical Characteristics ○BD9702FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V) Parameter Output ON Resistance Efficiency Switching Frequency Load Regulation Line Regulation Over Current Protection Limit INV Pin Threshold Voltage INV Pin Threshold Voltage Thermal Variation INV Pin Input Current STBY Pin Threshold Voltage STBY Pin Input Current Circuit Current Stand-by Current ON OFF Symbol Ron η fosc ΔVOLOAD ΔVOLINE Iocp VINV ΔVINV IINV VSTBYON VSTBYOFF Istby Icc Ist Limit MIN 88 3.2 0.98 2.0 -0.3 5 TYP 0.5 86 110 10 40 1.00 ±0.5 1 25 4 0 MAX 1.5 132 40 100 1.02 36 0.3 50 12 5 Unit Ω % kHz mV mV A V % μA V V μA mA μA STBY＝0V STBY=3V Tj=0～85℃ design guarantee VINV=1.0V VCC=20V,Io=1～3A VCC=10～30V,Io=1.0A Conditions design guarantee Io＝1A design guarantee www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 3/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 ●Characteristic Data ○BD9701FP/CP-V5/T/T-V5 Technical Note 100 6 110 OUTPUT VOLTAGE : VO [V] OSC FREQUENCY : FOSC　[ｋHz] 90 5 4 3 2 1 0 EFFICIENCY η: [%] 105 80 70 60 50 40 10 100 1000 100 95 90 -10 10 30 50 70 90 0 1 2 3 4 OUTPUT CURRENT : IOUT[A] OUTPUT CURRENT IOUT : [A] Fig.1 EFFICIENCY-LOAD CURRENT Fig.2 OCP VCC=20V AMBIE NT T E MPE RAT URE : T a [℃ ] Fig.3 fosc-Ta 5.1 5.100 5 4.5 OUTPUT VOLTAGE : VO [V] OUTPUT VOLTAGE : VO [V] 5.05 VCC=30V 5.050 CIRCUIT CURRENT ; [mA] 4 3.5 3 2.5 2 1.5 1 0.5 5 5.000 4.95 VCC=10V VCC=20V 4.950 4.9 0 200 400 600 800 1000 4.900 0 10 20 30 40 0 10 15 20 25 30 35 OUTPUT CURRENT : IOUT[A] INPUT VOLTAGE : VCC [V] INPUT VOLTAGE : VCC [V] Fig.4 OUTPUT VOLTAGE-LOAD CURRENT Fig.5 OUTPUT VOLTAGE-INPUT VOLTAGE (Vo=5V,Ro=5ohm) 110 Fig.6 CIRCUIT CURRENT-INPUT VOLTAGE NO LOAD 1.020 3.5 2.5 2 1.5 1 0.5 0 0 0.5 1 1.5 2 105 INV THRESHOLD VOLTAGE : VINV[V] OUTPUT VOLTAGE : VDS[V] 3 OSC FREQUENCY : FOSC　[ｋHz] 1.010 100 1.000 95 0.990 90 0 10 20 30 40 0.980 -10 10 30 50 70 90 SWITCHING CURRENT : ISW[A] INPUT VOLTAGE : VCC [V] AMBIENT TEMPERATURE : Ta [℃] Fig.7 VOUT～OUT VOLTAGE-DRAIN CURRENT Fig.8 fosc-INPUT VOLTAGE Fig.9 INV THRESHOLD VOLTAGE-Ta www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 4/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 ●Characteristic Data ○BD9702FP/CP-V5/T/T-V5 Technical Note 100 6 120 [kHz] OSC FREQUENCY : FOSC OUTPUT VOLTAGE : VO [V] 90 5 4 3 2 1 0 EFFICIENCY η: [%] 80 70 60 50 40 10 115 110 105 OUTPUT CURRENT : IOUT[A] 100 1000 10000 0 OUTPUT CURRENT : IOUT[A] 1 2 3 4 5 6 100 - 10 10 30 50 70 90 AMBIENT TEMPERATURE : Ta [℃] Fig.10 EFFICIENCY-LOAD CURRENT Fig.11 OCP VCC=20V Fig.12 fosc-Ta 5.10 5.10 5 OUTPUT VOLTAGE : VO [V] OUTPUT VOLTAGE : VO [V] VCC=30V 5.05 5.05 VCC=20V 5.00 CIRCUIT CURRENT ; [mA] 0 10 20 30 40 4 3 5.00 2 4.95 VCC=10V 4.95 1 4.90 0 500 1000 1500 2000 2500 3000 4.90 0 OUTPUT CURRENT : IOUT[A] INPUT VOLTAGE : VCC [V] 10 15 20 25 30 35 INPUT VOLTAGE : VCC [V] Fig.13 OUTPUT VOLTAGE-LOAD CURRENT Fig.14 OUTPUT VOLTAGE-INPUT VOLTAGE (Vo=5V,Ro=5ohm) 120 Fig.15 CIRCUIT CURRENTINPUT VOLTAGE NO LOAD 1.02 2.0 INV THRESHOLD VOLTAGE : VINV[V] OSC FREQUENCY : FOSC　[ｋHz] OUTPUT VOLTAGE : VDS[V] 1.5 115 1.01 1.0 110 1.00 0.5 105 0.99 0.0 0 0.5 1 1.5 2 2.5 3 100 0 10 20 30 40 0.98 -10 10 30 50 70 90 SWITCHING CURRENT : ISW[A] INPUT VOLTAGE : VCC [V] AMBIENT TEMPERATURE : Ta [℃] Fig.16 VOUT～OUT VOLTAGE-DRAIN CURRENT Fig.17 fosc-INPUT VOLTAGE Fig.18 INV THRESHOLD VOLTAGE-Ta www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 5/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 ●Characteristic Data ○BD9703FP/CP-V5/T/T-V5 100 6 5 4 3 2 1 0 Technical Note 330 OUTPUT VOLTAGE : VO [V] 90 OSC FREQUENCY : FOSC　[ｋHz] 0 1 2 3 4 EFFICIENCY η: [%] 315 80 70 60 50 40 10 300 285 OUTPUT CURRENT : IOUT[A] 100 1000 270 -10 10 30 50 70 90 AMBIENT TEMPERATURE : Ta [℃] OUTPUT CURRENT : IOUT[A] Fig.19 EFFICIENCY-LOAD CURRENT Fig.20 OCP VCC=20V Fig.21 fosc-Ta 5.1 5.10 5 OUTPUT VOLTAGE : VO [V] OUTPUT VOLTAGE : VO [V] 5.05 VCC=30V 5.05 CIRCUIT CURRENT ; [mA] 4 3 5 5.00 2 4.95 VCC=20V VCC=10V 4.95 1 4.9 0 200 400 600 800 1000 4.90 0 10 20 30 40 0 10 15 20 25 30 35 OUTPUT CURRENT : IOUT[A] INPUT VOLTAGE : VCC [V] INPUT VOLTAGE : VCC [V] Fig.22 OUTPUT VOLTAGE-LOAD CURRENT 1.5 Fig.23 OUTPUT VOLTAGE-INPUT VOLTAGE (Vo=5V,Ro=5ohm) INV THRESHOLD VOLTAGE : VINV[V] 330 1.02 Fig.24 CIRCUIT CURRENT-INPUT VOLTAGE NO LOAD OSC FREQUENCY : FOSC　[ｋHz] OUTPUT VOLTAGE : VDS[V] 1 315 1.01 300 1.00 0.5 285 0.99 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 270 0 10 20 30 40 0.98 -10 10 30 50 70 90 SWITCHING CURRENT : ISW[A] INPUT VOLTAGE : VCC [V] AMBIENT TEMPERATURE : Ta [℃] Fig.25 VOUT～OUT VOLTAGE-DRAIN CURRENT Fig.26 fOSC-INPUT VOLTAGE Fig.27 INV THRESHOLD VOLTAGE-Ta www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 6/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 ●Block Diagram BD9701FP/CP-V5/T/T-V5, BD9703FP/CP-V5/T-V5, BD9702CP-V5/T/T-V5 Technical Note VCC 1 TO252-5 Package Dimensions (mm) VREF PWM COMP DRIVER OSC STBY 5 STBY CTL LOGIC 2 TSD OCP OUT Error AMP INV 4 TO220CP-V5 Package Dimensions (mm) 3 GND Fig.28 Block Diagram ●Pin Description Pin No. 1 2 3,FIN(*2) 4 5 Pin Name VCC OUT GND INV STBY Function Input Power Supply Pin Internal Pch FET Drain Pin Ground Output Voltage Feedback Pin ON/OFF Control Pin (*2)FIN is assigned in the case of TO252-5. TO220FP-5 Package Dimensions (mm) TO220FP-5(V5) Package Dimensions (mm) www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 7/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 ●Block Function Explanations ・VREF Generates the regulated voltage from VCC input, compensated for temperature. Technical Note ・OSC Generates the triangular wave oscillation frequency using an internal resistors and capacitor. Used for PWM comparator input. ・Error AMP This block, via the INV pin, detects the resistor-divided output voltage, compares this with the reference voltage, then amplifies and outputs the difference. ・PWM COMP Outputs PWM signals to the Driver block, which converts the error amp output voltage to PWM form. ・DRIVER This push-pull FET driver powers the internal Pch MOSFET, which accepts direct PWM input. ・STBY Controls ON/OFF operation via the STBY pin. The output is ON when STBY is High. ・Thermal Shutdown (TSD) This circuit protects the IC against thermal runaway and damage due to excessive heat. A thermal sensor detects the junction temperature and switches the output OFF once the temperature exceeds a threshold value (175deg). Hysteresis is built in (15deg) in order to prevent malfunctions due to temperature fluctuations. ・Over Current Protection (OCP) The OCP circuit detects the voltage difference between VCC and OUT by measuring the current through the internal Pch MOSFET and switches the output OFF once the voltage reaches the threshold value. The OCP block is a self-recovery type (not latch). ●Timing Chart VCC PIN VOLTAGE WAVE OSC (Internal Oscillation Wave) Error AMP OUTPUT OUTPIN VOLTAGE WAVE OUTPUT VOLTAGE WAVE Fig.29 Timing Chart www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 8/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 ●Notes for PCB layout C5 Technical Note R2 : 1kO R1 : 4kO 4 INV STBY 5 1 VCC C1 C2 GND 3 L1 OUT 2 D1 C4 C3 5.0V Fig.30 Layout • Place capacitors between VCC and Ground, and the Schottky diode as close as possible to the IC to reduce noise and maximize efficiency. • Connect resistors between INV and Ground, and the output capacitor filter at the same Ground potential in order to stabilize the output voltage. ●Application component selection and settings Inductor L1 If the winding resistance of the choke coil is too high, the efficiency may deteriorate. As the overcurrent protection operates over minimum 1.6A (BD9701FP/CP-V5/T/T-V5, BD9703FP/CP-V5/T-V5) or 3.2A minimum (BD9701CP-V5/T/T-V5), attention must be paid to the heating of the inductor due to overload of short-circulated load. Note that the current rating for the coil should be higher than IOUT(MAX)＋⊿IL. Iout (MAX): maximum load current If you flow more than maximum current rating, coil will become overload, and cause magnetic saturation, and those account for efficiency deterioration. Select from enough current rating of coil which doesn’t over peak current. (VCC-VOUT) ⊿IL. = × VOUT × 1 fosc L1 VCC L1:inductor value, VCC:maximum input voltage, VOUT:output voltage, ⊿IL:coil ripple current value, fosc:oscillation frequency Shottky Barrier Diodes D1 A Schottky diode with extremely low forward voltage should be used. Selection should be based on the following guidelines regarding maximum forward current, reverse voltage, and power dissipation: ・The maximum current rating is higher than the combined maximum load current and coil ripple current (⊿IL). ・The reverse voltage rating is higher than the VIN value. ・Power dissipation for the selected diode must be within the rated level. The power dissipation of the diode is expressed by the following formula: Pdi=Iout(MAX)×Vf×(1-VOUT/VCC) Iout (MAX): maximum load current, Vf: forward voltage, VOUT: output voltage, VCC: input voltage Capacitor C1,C2,C3,C4,C5 As large ripple currents flow across C1 and C3 capacitors, high frequency and low impedance capacitor for a switching regulator must be used. The ceramic capacitor C2 must be connected. If not, noise may cause an abnormal operation. If the ripple voltage of input and output is large, C4 selected among ceramic , tantalum and OS capacitor with low ESR may decrease the ripple, however if the only low ESR capacitor is used, an oscillation or unstable operation may be caused. C5 is the capacitor for phase compensation and normally not used. If you need to improve the stability of feedback network, connect C5 between INV and OUTPUT. Feed back resistance R1,R2 The offset of output voltage is determined by both Feed back resistance and INV pin input current. VOUT=(R1+R2) VINV/R2 (VINV pin Threshold Votage) If Feed back resistance is high, the setting of output voltage will be move. Recommended : Resistance between INV pin and GND = less than 10kΩ. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 9/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note ●Recommended Circuit C2 + C1 1 VCC OUT 2 D1 C4 + C3 L1 5.0V STBY 5 R1 : 4kΩ C5 INV 4 R2 : 1kΩ 3 GND Fig.31 Recommended Circuit Output Voltage 5V : Application cicuit example (BD9701FP/CP-V5/T/T-V5) ＜Recommended Components (Example)＞ Inductor L1＝100μH Schottky Diode D1 Capacitor C1＝100μF(50V) C2＝OPEN C3＝220μF(25V) C4＝OPEN C5＝OPEN :CDRH127/LD (sumida) :RB050LA-40 (ROHM) :Al electric capacitor UHD1H101MPT (nichicon) :Al electric capacitor UHD1E221MPT (nichicon) ＜Recommended Components example 2＞ Inductor L1＝100μH Schotky Diode D1 Capacitor C1＝220μF(25V) C2＝1.0μF(50V) C3＝470μF(16V) C4＝150μF(20V) C3＝OPEN :CDRH127/LD (sumida) :RB050LA-40 (ROHM) :Al electric capacitor UVR1H221MPA (nichicon) :ceramic cap UMK212F105ZG (TAIYO YUDEN) :Al electric capacitor UVR1E471MPA (nichicon) :OS capacitor 20SVP150M (SANYO) www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 10/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note (BD9703FP/CP-V5/T/T-V5) ＜Recommended Components＞ Inductor L1＝47μH Schotky Diode D1 Capacitor C1＝100μF(50V) C2＝2.2μF(50V) C3＝470μF(25V) C4＝OPEN C3＝OPEN (BD9702CP-V5/T/T-V5) ＜Recommended Components＞ Inductor L1＝47μH Schotky Diode D1 Capacitor C1＝1000μF(50V) C2＝OPEN C3＝1000μF(25V) C4＝OPEN C3＝OPEN :CDRH127/LD (sumida) :RB050LA-40 (ROHM) :Al electric capacitor UHD1H101MPT (nichicon) :ceramic cap CM43X7R225K50A (KYOCERA) :Al electric capacitor UHD1E471MPT (nichicon) :CDRH127/LD (sumida) :RB050LA-40 (ROHM) :Al electric capacitor UHD1H102MPT (nichicon) :Al electric capacitor UHD1E102MPT (nichicon) ●Test Circuit Vcc 1 + OUT 2 SW2 GND 3 INV 4 SW4 STBY 5 SW5 Icc A Vcc 1kΩ 2kΩ A I INV V INV A ISTB VSTB f + Vo V SW6 Io Fig.32 Input Output Measurement Circuit www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 11/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 ●I/O Equivalent Circuit Pin 1 (VCC), Pin 3 (GND) Pin 2 (OUT) Pin 4 (INV) Technical Note Pin 5 (STBY) VC VCC VCC VCC STB OUT INV 300Ω 140KΩ 60KΩ GND 70KΩ Fig.33Input Output Equivalent Circuit ●Notes for use 1. Absolute Maximum Ratings Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range may result in IC deterioration or damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when such damage is suffered. A physical safety measure such as a fuse should be implemented when use of the IC in a special mode where the absolute maximum ratings may be exceeded is anticipated. 2. GND voltage Ensure a minimum GND pin potential in all operating conditions. In addition, ensure that no pins other than the GND pin carry a voltage lower than or equal to the GND pin, including during actual transient phenomena. 3. Thermal design Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions. 4. Inter-pin shorts and mounting errors Use caution when orienting and positioning the IC for mounting on printed circuit boards. Improper mounting may result in damage to the IC. Shorts between output pins or between output pins and the power supply and GND pin caused by the presence of a foreign object may result in damage to the IC. 5. Operation in strong electromagnetic field Operation in a strong electromagnetic field may cause malfunction. 6. Thermal shutdown circuit (TSD circuit) This IC incorporates a built-in thermal shutdown circuit (TSD circuit). The TSD circuit is designed only to shut the IC off to prevent runaway thermal operation. Do not continue to use the IC after operating this circuit or use the IC in an environment where the operation of the thermal shutdown circuit is assumed. 7. Testing on application boards When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to stress. Always discharge capacitors after each process or step. Ground the IC during assembly steps as an antistatic measure, and use similar caution when transporting or storing the IC. Always turn the IC's power supply off before connecting it to or removing it from a jig or fixture during the inspection process. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 12/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note 8. IC pin input This IC is a monolithic IC which (as below) has P+ substrate and betweenthe various pin. A P-N junction is formed from this P layer of each pin. For example the relation between each potential is as follows. (When GND > PinB and GND > PinA, the P-N junction operates as a parasitic diode.) Parasitic diodes can occur inevitably in the structure of the IC. The operation of parasitic diodes can result in mutual interference among circuits as well as operation faults and physical damage. Accordingly, you must not use methods by which parasitic diodes operate, such as applying a voltage that is lower than the GND(P substrate)voltage to an input pin. Resistance Transistor (NPN) B Ｃ ～ ～ (PinA) (PinB) ～ ～ E GND N P＋ N N P substrate Parasitic diode GND P P＋ Ｎ N P substrate ＧＮＤ P＋ N N P P＋ Parasitic diode (PinB) (PinA) C ～ ～ ～ ～ Other adjacent components B E GND Parasitic diode GND Parasitic diode Fig.34 Simplified structure of a Bipolar IC 9. Common impedance Power supply and ground wiring should reflect consideration of the need to lower common impedance and minimize ripple as much as possible (by making wiring as short and thick as possible or rejecting ripple by incorporating inductance and capacitance). 10. Pin short and mistake fitting Do not short-circuit between OUT pin and VCC pin, OUT pin and GND pin, or VCC pin and GND pin. When soldering the IC on circuit board, please be unusually cautious about theorientation and the position of the IC. Bypass diode Back current prevention diode VCC Output Pin Fig.35 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 13/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note 11. Application circuit Although we can recommend the application circuits contained herein with a relatively high degree of confidence, we ask that you verify all characteristics and specifications of the circuit as well as performance under actual conditions. Please note that we cannot be held responsible for problems that may arise due to patent infringements or noncompliance with any and all applicable laws and regulations. 12. Operation The IC will turn ON when the voltage at the STBY pin is greater than 2.0V and will switch OFF if under 0.3V. Therefore, do not input voltages between 0.3V and 2.0V. Malfunctions and/or physical damage may occur. ●Power Dissipation TO252-S (4) 4.80W 5 POWER DISSIPATION : Pd [W] (1) No heat sink (2) 2layer PCB (Copper laminate area 15 mm×15mm) (3) 2layer PCB (Copper laminate area 70 mm×70mm) (4) 4layer PCB (Copper laminate area 70 mm×70mm) 4 (3) 3.50W 3 (2) 1.85W 2 (1) 0.80W 1 0 0 25 50 75 85 100 125 AMBIENT TEMPERATURE : Ta[°C] Fig.36 TO220 150 15 POWER DISSIPATION : Pd [W] (3) 11.0W 10 (2) 6.5W 5 (1) 2.0W (1) No heat sink (2) Aluminum heat sink 3 50×50×2 (mm ) (3) Aluminum heat sink 100×100×2 (mm3) 0 0 25 50 75 100 125 AMBIENT TEMPERATURE : Ta[°C] Fig.37 150 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 14/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 ●Ordering part number Technical Note B D 9 7 0 1 F P - E 2 Part No. Part No. 9701=36V/1.5A 9702=36V/1.5A 9703=36V/3.0A Package FP : TO252-5 CP-V5 : TO220CP-V5 T/T-V5 : TO220FP-5(V5) Packaging and forming specification E2: Embossed tape and reel None:Tray,Tube ●Package specifications TO252-5 6.5±0.2 +0.2 5.1 -0.1 2.3±0.2 C0.5 0.5±0.1 Tape Quantity Direction of feed Embossed carrier tape 2000pcs E2 The direction is the 1pin of product is at the lower left when you hold 1.5±0.2 FIN 5.5±0.2 9.5±0.5 ( reel on the left hand and you pull out the tape on the right hand ) 0.8 0.5±0.1 0.5 1.27 1.0±0.2 2.5 123 45 1.5 1pin Direction of feed (Unit : mm) Reel ∗ Order quantity needs to be multiple of the minimum quantity. TO220FP-5 1.8±0.2 +0.3 10.0−0.1 +0.3 7.0 −0.1 +0.3 4.5 −0.1 φ3.2±0.1 +0.2 2.8 −0.1 Container Quantity Direction of feed Tube 500pcs Direction of products is fixed in a container tube +0.4 17.0 −0.2 12.0±0.2 13.5Min. 8.0±0.2 0.7 1.2 0.8 1.778 0.5±0.1 2.85 12345 (Unit : mm) ∗ Order quantity needs to be multiple of the minimum quantity. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 15/16 2009.04- Rev.B BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note TO220FP-5(V5) 1.8±0.2 + 0.3 10.0 − 0.1 7.0 + 0.3 − 0.1 φ3.2±0.1 +0.3 4.5 −0.1 +0.2 2.8 −0.1 Container Quantity Direction of feed Tube 500pcs Direction of products is fixed in a container tube +0.4 17.0 −0.2 12.0±0.2 31.5Max. 8.0±0.2 0.7 (2.0) 17.5 1.2 0.8 0.5±0.1 1.778 4.25 8.15 12345 23.4 (2.85) 25.8 (Unit : mm) ∗ Order quantity needs to be multiple of the minimum quantity. TO220CP-V5 +0.3 φ 3.2 ± 0.1 10.0 -0.1 4.5± 0.1 +0.2 2.8 -0.1 Tape Quantity Embossed carrier tape 500pcs E2 +0.4 15.2 -0.2 12.0 ± 0.2 8.0 ± 0.2 13.60 Direction of feed 16.92 ( reel on the left hand and you pull out the tape on the right hand The direction is the 1pin of product is at the lower left when you hold ) 4.92 ± 0.2 1.0 ± 0.2 1.444 0.82 ± 0.1 0.92 1.778 0.42 ± 0.1 1.58 (2.85) 4.12 (1.0) (Unit : mm) Reel 1pin Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 16/16 2009.04- Rev.B Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. 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ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. R0039A