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| 1-1-2 Switching Mode Regulator ICs SI-8000HFE Series Full-Mold, Separate Excitation Step-down Switching Mode Regulator ICs Features * Compact full-mold package (equivalent to TO220) * Output current: 5.5 A * High efficiency: 83% typ. (at Vo = 5 V) * Requires only 4 discrete components * Built-in reference oscillator (150 kHz) * Built-in drooping-type-overcurrent and thermal protection circuits * Built-in soft start circuit (Output ON/OFF available) Lineup Part Number VO (V) IO (A) SI-8008HFE Variable (0.8 to 15) 5.5 SI-8050HFE 5 Absolute Maximum Ratings Parameter DC Input Voltage Symbol VIN PD1-1 Power Dissipation PD1-2 PD2-1 PD2-2 Junction Temperature* Storage Temperature Tj Tstg Ratings 43 25 (with infinite heatsink) 20 (with infinite heatsink) 2.15 (without heat sink, standalone operation) 1.72 (without heatsink, standalone operation) +150 -40 to +150 5 58 C C C/W C/W W Unit V Limited by thermal protection, Tjmax=150C Tjmax=125C Limited by thermal protection, Tjmax=150C Tjmax=125C Conditions Applications * Onboard local power supplies * AV equipment Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient Air) j-c j-a *: This product has built-in thermal protection circuits that may operate when the junction temperature rises above 130C. The recommended design for the junction temperature during operation is below 125C. Recommended Operating Conditions Ratings Parameter Input Voltage Range Output Voltage Range Output Current Range Operating Junction Temperature Range Operating Temperature Range Symbol VIN VO IO Tjop Top SI-8008HFE SI-8050HFE Unit (Ta=25C) Vo+3*1 to 40 0.8 to 24 0 to 5.5 -30 to +125 -30 to +85 8 to 40 5.0 V V A C C *1: The minimum value of an input voltage range is the higher of 4.5 V or VO + 3 V. Electrical Characteristics Ratings Parameter Symbol Ratings (Ta=25C) SI-8008HFE (at Vo = 5 V) typ. max. min. 0.784 0.800 VIN=15V, Io=1A 0.816 Output Voltage (Reference Voltage) Temperature Coefficient of Output Voltage (Temperature Coefficient of Reference Voltage) Efficiency Oscillation Frequency Line Regulation Load Regulation Overcurrent Protection Starting Current Low Level Voltage ON/OFF Pin* Low Voltage Vo (VADJ) Conditions min. 4.90 SI-8050HFE typ. 5.00 Unit max. 5.10 V Vo/T (VADJ/T) Conditions VIN=15V, Io=1A 0.5 mV/C Conditions 0.1 VIN=15V, Io=1A, Tc=0 to 100C 83 VIN=15V, Io=3A 150 VIN=15V, Io=3A 60 VIN=10 to 30V, Io=3A 20 VIN=15V, Io=0.2 to 3A 5.6 VIN=15V, Io=1A, Tc=0 to 100C 83 VIN=15V, Io=3A 150 VIN=15V, Io=3A 60 VIN=10 to 30V, Io=3A 20 VIN=15V, Io=0.2 to 3A 5.6 % kHz fo Conditions VOLINE Conditions 80 50 80 50 mV mV A VOLOAD Conditions IS Conditions VIN=15V 10 VSSL=0V 6 VIN=15V, Io=0A 200 VIN=15V, VSS=0V 400 0.5 30 VIN=15V 10 VSSL=0V 6 VIN=15V, Io=0A 200 VIN=15V, VSS=0V 400 0.5 30 VSSL Outflow Current at ISSL Conditions V A mA A Iq Quiescent Circuit Current Conditions Iq(OFF) Conditions *: Pin 5 is the SS pin. Soft start at power on can be performed with a capacitor connected to this pin. The output can also be turned ON/OFF with this pin. The output is stopped by setting the voltage of this pin to VSSL or lower. SS-pin voltage can be changed with an open-collector drive circuit of a transistor. When using both the soft-start and ON/OFF functions together, the discharge current from C3 flows into the ON/OFF control transistor. Therefore, limit the current securely to protect the transistor if C3 capacitance is large. The SS pin is pulled up to the power supply in the IC, so applying the external voltage is prohibited. If the pin is not used, leave it open. SI-8000HFE SI-8000HFE SI-8000HFE 5 SS 5 SS C3 5 SS C3 VOUT. ON/OFF Soft start Soft start +VOUT. ON/OFF 76 ICs SI-8000HFE Series External Dimensions (TO220F-5) Type A 10.16 0.2 0.1 (Unit : mm) Type B 4.7 3.3 0.2 0.5 2.54 0.7 0.2 0.2 3.20.2 10.0 0.2 4.2 0.2 2.8 0.2 4.00.2 7.90.2 3. 2 a SK c b (17.9) 2.76 0.2 a b (17.9) 0 . c 2 16.90.3 15.87 a. Part Number b. Lot Number c. Administer Number Pin Assignment q VIN w SW e GND r ADJ (VOS for SI-8050HFE) t SS Plastic Mold Package Type Flammability: UL94V-0 Product Mass: Approx. 2.3g The external dimension shall be either A or B. 5.4 0.2 6.68 (2) (2.0) 0.8 0.6 0.5 -0.05 4xp1.7 9.6 0.2 0.6 +0.1 R-end 0.950.15 4.3 0.85 -0.1 P1.70.7x4=6.80.7 (Measured at the tip) 0.5 -0.1 +0.2 4.3 8.2 0.7 0.7 0.45 -0.1 3.90.7 (4.6) +0.2 +0.2 (4.3) 8.20.7 1234 5 12345 Block Diagram SI-8008HFE 1 VIN PReg. 5 SS ON/OFF Soft Start Reset OSC Thermal ADJ Protection 4 + + - + - SI-8050HFE SW 2 4.60.6 5.00.6 Typical Connection Diagram 2.60.1 1 IN PReg. Overcurrent Protection SW 2 Overcurrent Protection 5 ON/OFF Latch & Drive ON/OFF Soft Start Reset OSC + - Latch & Drive Comp. Error Amp. Comp. Error Amp. - + + Thermal Protection Vos 4 Reference Voltage GND 3 GND 3 Reference Voltage VIN C1 + 1 C4 IN PReg. SW 2 Di L VOUT + C2 VIN C1 + 1 C4 IN PReg. SW 2 Di L VOUT + C2 5 ON/OFF R1 SI-8008HFE C3 + - 5 ON/OFF SI-8050HFE C3 ADJ 4 + - ADJ 4 - + + + - R2 GND 3 GND 3 C1 C2 C3 C4 L1 Di : 1500F : 1000F :1F (Only when using soft-start function) :4.7F (RPER11H475K5 (Murata Manufacturing) recommended) :100H : FMB-G16L (Sanken) ICs 77 |
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