SI-8502L

qSI-8400L/8500L Series SI-8400L/8500L Series Separate Excitation Switching Type with Coil sFeatures • • • • • • Integrated switching IC and coil construction Requires 2 external components only Low switching noise Heatsink not required Built-in overcurrent and thermal protection circuits Built-in soft start circuit (Output ON/OFF control)...SI-8500L Series sApplications • Telephone power supplies • Onboard local power supplies sLineup Part Number VO(V) IO(A) SI-8401L 5.0 0.5 SI-8402L 12.0 0.4 SI-8403L 3.3 0.5 SI-8405L 15.0 0.4 SI-8501L 5.0 SI-8502L 12.0 SI-8503L 3.3 1.0 SI-8504L 9.0 SI-8505L 15.0 sAbsolute Maximum Ratings Parameter DC Input Voltage Power Dissipation Junction Temperature Storage Temperature Symbol SI-8400L VIN PD Tj Tstg 1.25 +100 –25 to +85 35 3 Ratings SI-8500L V W °C °C Unit sRecommended Operating Conditions Parameter DC Input Voltage Range Output Current Range Operating Temperature Range Symbol SI-8401L VIN IO Top 7 to 33 0 to 0.5 15 to 33 0 to 0.4 Ratings SI-8402L SI-8403L 5.3 to 33 0 to 0.5 SI-8405L 18 to 33 0 to 0.4 V A °C Unit –20 to +85 Parameter DC Input Voltage Range Output Current Range Operating Temperature Range Symbol SI-8501L VIN IO Top 7 to 33 SI-8502L 15 to 33 Ratings SI-8503L 5.3 to 33 0 to 1.0 –20 to +85 SI-8504L 12 to 33 SI-8505L 18 to 33 Unit V A °C 96 qSI-8400L/8500L Series sElectrical Characteristics Ratings Parameter Symbol min. Output Voltage Efficiency Switching Frequency Line Regulation Load Regulation Temperature Coefficient of Output Voltage Switching Ripple Voltage (C2=470µF) Overcurrent Protection Starting Current VO Conditions η Conditions f Conditions ∆VOLINE Conditions ∆VOLOAD Conditions ∆VO/∆Ta ∆Vr Conditions IS1 Conditions 0.55 VIN=10V 4.80 SI-8401L typ. 5.00 80 VIN=20V, IO=0.3A 60 VIN=20V, IO=0.3A 80 30 ±0.5 20 40 0.45 VIN=18V VIN=20V, IO=0.3A 100 40 VIN=10 to 30V, IO=0.3A VIN=20V, IO=0.1 to 0.4A max. 5.20 min. 11.40 SI-8402L typ. 12.00 88 VIN=24V, IO=0.3A 60 VIN=24V, IO=0.3A 100 70 ±1.5 35 70 0.55 VIN=8V VIN=24V, IO=0.3A 130 95 VIN=18 to 30V, IO=0.3A VIN=24V, IO=0.1 to 0.4A max. 12.60 min. 3.17 SI-8403L typ. 3.30 75 VIN=15V, IO=0.3A 60 VIN=15V, IO=0.3A 60 20 ±0.5 15 30 0.45 VIN=21V VIN=15V, IO=0.3A 80 30 VIN=8 to 30V, IO=0.3A VIN=15V, IO=0.1 to 0.4A max. 3.43 min. 14.25 SI-8405L typ. 15.00 89 VIN=27V, IO=0.3A 60 VIN=27V, IO=0.3A 100 90 ± 1.5 40 80 VIN=27V, IO=0.3A 130 120 max. 15.75 (Ta=25°C) Unit V % kHZ mV mV mV/ °C mVp-p A VIN=20V, IO=0.3A VIN=24V, IO=0.3A VIN=15V, IO=0.3A VIN=27V, IO=0.3A VIN=21 to 30V, IO=0.3A VIN=27V, IO=0.1 to 0.4A (Ta=25°C) Ratings Parameter Symbol VO Conditions Efficiency Switching Frequency Line Regulation Load Regulation Temperature Coefficient of Output Voltage Switching Ripple Voltage (C2=470µF) Overcurrent Protection Starting Current η Conditions f Conditions ∆VOLINE Conditions ∆VOLOAD Conditions ∆VO/∆Ta ∆Vr Conditions IS1 Conditions 1.1 VIN=18V 4.80 SI-8501L min. Output Voltage 5.00 83 VIN=20V, IO=0.5A 60 VIN=20V, IO=0.5A 70 30 ± 0.5 45 VIN=20V, IO=0.5A 1.1 VIN=24V 130 55 VIN=10 to 30V, IO=0.5A VIN=20V, IO=0.2 to 0.8A 5.20 SI-8502L 11.40 12.00 12.60 VIN=24V, IO=0.5A 89 VIN=24V, IO=0.5A 60 VIN=24V, IO=0.5A 70 30 ± 1.5 30 VIN=24V, IO=0.5A 1.1 VIN=12V 130 55 VIN=18 to 30V, IO=0.5A VIN=24V, IO=0.2 to 0.8A 3.17 SI-8503L 3.30 79 VIN=15V, IO=0.5A 60 VIN=15V, IO=0.5A 50 20 ±0.5 15 VIN=15V, IO=0.5A 1.1 VIN=21V 80 45 VIN=8 to 30V, IO=0.5A VIN=15V, IO=0.2 to 0.8A 3.43 8.55 SI-8504L 9.00 87 VIN=21V, IO=0.5A 60 VIN=21V, IO=0.5A 70 30 ±1.0 25 VIN=21V, IO=0.5A 1.1 VIN=25V 130 55 VIN=15 to 30V, IO=0.5A VIN=21V, IO=0.2 to 0.8A 9.45 SI-8505L typ. max. V % kHZ 130 55 mV mV mV/ °C mVp-p A 14.25 15.00 15.75 VIN=25V, IO=0.5A 90 VIN=25V, IO=0.5A 60 VIN=25V, IO=0.5A 70 30 ±1.5 30 VIN=25V, IO=0.5A VIN=21 to 30V, IO=0.5A VIN=25V, IO=0.2 to 0.8A Unit typ. max. min. typ. max. min. typ. max. min. typ. max. min. VIN=20V, IO=0.5A VIN=15V, IO=0.5A VIN=21V, IO=0.5A 97 qSI-8400L/8500L Series sOutline Drawing SI-8400L VIN y VIN r e LIN (unit:mm) SI-8500L LIN r a b Vo q 14.5±0.5 w GND a. Part Number b. Lot Number Open Air Type Weight: Approx. 5.1g a b SK a. Part Number b. Lot Number Open Air Type Weight: Approx. 14.5g ±0.5 Terminal 1 marking ±0.2 13.2 qwe VOUT SS GND ±0.1 26 ±0.6 10 φ 0.6 4 3.7 18 (2.17) (10.16) 4.7 φ 0.8max. ±0.6 ,,,, ,,,, ,,,, ,,,, , Terminal 1 marking (7.62) (2.19) 26±0.1 12 18 2 sBlock Diagram SI-8400L 3 4 VIN Reg. OSC Reset OCP Latch & Drive TSD Di1 Amp. Amp. SI-8500L LIN L1 1 VO 6 VIN Reg. OSC Reset OCP Latch & Drive TSD Di1 MIC1 4 LIN L1 1 VO MIC1 Comp. Comp. VREF VREF 2 GND 2 S.S. 3 GND sStandard External Circuit VIN 4 + C1 220µF VIN SI-8400L GND 2 VOUT LIN 3 N.C 1 + VO VIN 6 + C1 470µF VIN S.S 2 C3 SI-8500L VOUT 1 + VO C2 470µF GND GND LIN 3 4 N.C C2 470µF GND GND GND Pin compatible with SI-8200L C3 is necessary only for using soft start function. Pin compatible with SI-8300L 98 qSI-8400L/8500L Series sTa-PD Characteristics 1.5 3.0 SI-8400L Power Dissipation PD (W) SI-8500L PD=VO•IO 100 –1 ηχ Power Dissipation PD (W) 1.0 2.0 VO :Output voltage IO :Output current ηχ :Efficiency (%) The efficiency depends on the input voltage and the output current. Thus, obtain the value from the efficiency graph and substitute the percentage in the formula above. 0.5 1.0 0 0 Ambient Temperature Ta (°C) 25 50 75 100 0 0 Ambient Temperature Ta (°C) 25 50 75 100 sSI-8500L application circuit Terminal no.2 is for soft start. Connecting a capacitor to the terminal enables the soft start function. See page 85 for the formulas to calculate delay time and rise time. Output can be turned on and off by using the soft start terminal. To stop output, set the soft start terminal voltage to VSSL (0.2V typ.) or less. To switch the potential of the soft start terminal, drive the open collector of the transistor. Since the discharge current from C3 flows to the ON/OFF control transistor, limit the current for protection. The SS terminal is pulled up to the power supply in the IC and no external voltage can be applied. SI-8500L SI-8500L SI-8500L 2 S.S. 2 S.S. C3 2 S.S. C3 VO. ON/OFF Soft start Soft start +VO ON/OFF sCaution 1. Allocation of Components For the best operating environment, the ground should be a single ground line at the GND terminal (terminal 2 on the SI-8400L, terminal 3 on the SI-8500L), and the wiring from C1 and C2 to ground should be as short as possible. 2. Capacitors C1 and C2 1) They must satisfy the breakdown voltage and allowable ripple current. Exceeding the ratings of these capacitors or using them without derating shortens their service lives and may also cause abnormal oscillation of the IC. 2) C2 must be a low-impedance type capacitor to ensure minimum ripple voltage and stable switching operation. 3) C3 (SI-8500L only) is a capacitor for soft start. When not using soft start, leave terminal 2 open. It is pulled up inside the IC. 3. Terminals LIN and NC in the connection diagram must be left unconnected to other circuits. 4. The IC's metalic heatsink is electrically floating. Do not connect it to GND or any other circuit. 5. Since the SI-8400L and 8500L series have an open-package construction, they can only be operated in specific environments. Verify the operating environment and use the conditions indicated in the reliability data. 99 qSI-8400L/8500L Series sTypical Characteristics (SI-8400L Series) Rise Characteristics(SI-8401L) 6 Ta=25°C Efficiency Characteristics(SI-8401L) 100 Ta=25°C Load Regulation(SI-8401L) 5.3 Ta=25°C 5 90 20V 25V 33V 10V 7V 5.2 Output Voltage VO (V) Output Voltage VO (V) 0.1A Efficiency η (%) 4 A 80 VIN 7V 10V 5.1 VIN=33V 5.0 10V 7V 20V =0 3 2 IO 0.5 A 0.3A 70 20V 60 25V 33V 50 4.9 1 4.8 0 0 0 0 2 4 6 8 10 0 0 0.1 0.2 0.3 0.4 0.5 0.1 0.2 0.3 0.4 0.5 Input Voltage VIN (V) Output Current IO (A) Output Current IO (A) Temperature Characteristics(SI-8401L) 100 VIN=20V, IO=0.3A 5.3 5.2 5.1 5.0 4.9 f 50 40 0 –40 –20 0 20 40 60 80 4.8 4.7 100 0 Overcurrent Protection Characteristics(SI-8401L) 6 Ta=25°C Thermal Protection Characteristics(SI-8401L) 6 VIN=20V, IO=20mA Efficiency η (%) Frequency f (kHz) 90 80 70 60 η 5 5 20V Output Voltage VO (V) Output Voltage VO (V) Output Voltage VO (V) 1.5 2.0 4 3 =7 V 4 V VIN VO 2 33 3 2 1 0 0 1 0 0.5 1.0 0 Ambient Temperature Ta (°C) Output Current IO (A) Case Temperature TC (°C) 50 100 150 200 Note on Thermal Protection: The thermal protection circuit is intended for protection against heat during instantaneous shortcircuiting. Its operation is not guaranteed for shortcircuiting over extended periods of time. Rise Characteristics(SI-8402L) 14 12 Ta=25°C Efficiency Characteristics(SI-8402L) 100 Ta=25°C Load Regulation(SI-8402L) 12.3 Ta=25°C 90 12.2 33 24 VI V V N= 15 V Output Voltage VO (V) Efficiency η (%) 10 Output Voltage VO (V) 0.2A 80 12.1 VIN=33V 24V 20V 15V 11.9 0. 4A 8 6 4 2 0 0 I O= 0A 70 12.0 60 50 0 0 11.8 5 10 15 20 0.1 0.2 0.3 0.4 0 0 0.1 0.2 0.3 0.4 Input Voltage VIN (V) Output Current IO (A) Output Current IO (A) 100 qSI-8400L/8500L Series sTypical Characteristics (SI-8500L Series) Rise Characteristics(SI-8501L) 7 6 Ta=25°C Efficiency Characteristics(SI-8501L) 100 90 Ta=25°C Load Regulation(SI-8501L) 5.15 5.10 Ta=25°C Output Voltage VO (V) Output Voltage VO (V) Efficiency η (%) 5 80 70 60 50 40 0 VIN= 7V IO = 0A 1A 4 3 2 1 0 0.5A 20V V 33 5.05 5.00 4.95 4.90 4.85 VIN =33V 20V 15V 7V 0 5 10 15 20 0 0.25 0.5 0.75 1 0 0 0.25 0.5 0.75 1 Input Voltage VIN (V) Output Current IO (A) Output Current IO (A) Temperature Characteristics(SI-8401L) 100 VIN=20V, IO=0.5A 5.15 5.10 Overcurrent Protection Characteristics(SI-8401L) 7 6 Ta=25°C Thermal Protection Characteristics(SI-8401L) 7 6 VIN=20V, IO=0A Efficiency η (%) Frequency f (kHz) 90 η 80 70 60 50 40 0 –40 VO f Output Voltage VO (V) Output Voltage VO (V) 5.05 5.00 4.95 4.90 4.85 0 120 Output Voltage VO (V) 5 4 VIN=7V 5 4 3 2 1 0 0 3 2 1 0 0 33V 20V Ambient Temperature Ta (°C) 0 40 80 1 2 3 4 40 80 120 160 Output Current IO (A) Ambient Temperature Ta (°C) Note on Thermal Protection: The thermal protection circuit is intended for protection against heat during instantaneous shortcircuiting. Its operation is not guaranteed for shortcircuiting over extended periods of time. Rise Characteristics(SI-8502L) 14 12 Ta=25°C Efficiency Characteristics(SI-8502L) 100 90 24 Load Regulation(SI-8502L) 12.3 12.2 Ta=25°C Ta=25°C =1 5V VIN V Output Voltage VO (V) Efficiency η (%) 10 8 6 4 2 0 0 0.5A 80 70 60 50 40 3 Output Voltage VO (V) 3V 12.1 VIN=33V 12.0 11.9 11.8 11.7 00 18V 15V 24V IO= 0A 1A 5 10 15 20 0 0 0.25 0.5 0.75 1.0 0.25 0.5 0.75 1 Input Voltage VIN (V) Output Current IO (A) Output Current IO (A) 101