SI-8001FFE DC-to-DC Step-Down Converter Features and Benefits Description 3.5 A output current supplied in a small, through-hole mount power package High efficiency: 83% at VIN = 15 V, IO = 2.0 A,VO = 5 V Requires only six external components (optional soft start requires an additional capacitor) Oscillation circuit built-in (frequency 300 kHz typical) Constant-current mode overcurrent protection circuit and overtemperature protection circuit built-in Soft start function built-in (can be implemented as an on/off function; output-off state at low level) Low current consumption during output-off state The SI-8001FFE DC voltage regulator is a DC-to-DC buck convertor that attains an oscillation frequency of 300 kHz, and has an integrated miniaturized choke coil, allowing it to serve as a small, high efficiency power supply in a compact TO220F package. The internal switching regulator function provides high efficiency switching regulation without any need for adjustment. The device requir
SI-8001FFE DC-to-DC Step-Down Converter Features and Benefits Description 3.5 A output current supplied in a small, through-hole mount power package High efficiency: 83% at VIN = 15 V, IO = 2.0 A,VO = 5 V Requires only six external components (optional soft start requires an additional capacitor) Oscillation circuit built-in (frequency 300 kHz typical) Constant-current mode overcurrent protection circuit and overtemperature protection circuit built-in Soft start function built-in (can be implemented as an on/off function; output-off state at low level) Low current consumption during output-off state The SI-8001FFE DC voltage regulator is a DC-to-DC buck convertor that attains an oscillation frequency of 300 kHz, and has an integrated miniaturized choke coil, allowing it to serve as a small, high efficiency power supply in a compact TO220F package. The internal switching regulator function provides high efficiency switching regulation without any need for adjustment. The device requir
SI-8001FFE DC-to-DC Step-Down Converter Features and Benefits Description 3.5 A output current supplied in a small, through-hole mount power package High efficiency: 83% at VIN = 15 V, IO = 2.0 A,VO = 5 V Requires only six external components (optional soft start requires an additional capacitor) Oscillation circuit built-in (frequency 300 kHz typical) Constant-current mode overcurrent protection circuit and overtemperature protection circuit built-in Soft start function built-in (can be implemented as an on/off function; output-off state at low level) Low current consumption during output-off state The SI-8001FFE DC voltage regulator is a DC-to-DC buck convertor that attains an oscillation frequency of 300 kHz, and has an integrated miniaturized choke coil, allowing it to serve as a small, high efficiency power supply in a compact TO220F package. The internal switching regulator function provides high efficiency switching regulation without any need for adjustment. The device requir
GND C1:10F/50V (murata:GRM55DB31H106KA87) C2:22F/16V (murata:GRM32ER71A226KE20) C3:560pF (murata:GRM18) C4:10nF (murata: GRM18) C5:10nF (murata: GRM18) L1:10H D1:SPB-G56S (Sanken) SJPB-L4 (Sanken) R1:46k Vo = 5 V R2:5.1k R3:24k 73 1-1-2 SI-8000FFE * 3.5 A SI-8001FFE (0.8 24) 3.5 TO220F-5 * 83%TYP Vo = 5 VVIN = 15 VIo = 2 A * 6 * 300 kHz * * / * DVD FPD-TV * * VoV IoA VIN PD1-1 PD1-2 PD2-1 PD2-2 Tj Tstg j-c j-a *1 SI-8001FFE 43 22.7 18.2 2.15 1.72 +150 -40 150 5.5 58 V W Tj=150 Tj=125 Tjmax=150 Tj=125 W /W /W *: 130 125 SI-8001FFE Vo3*1 40 0.8 24 0 3.5 -30 125 -30 85 VIN VO IO Tjop Top V V A * 4.5 V Vo +3 V Ta = 25 Vo = 5 V R1 = 4.2 kR2 = 0.8 k SS VADJ VADJ/T fo VOLINE VOLOAD IS VSSL ISSL Iq IqOFF 0.784 270 SI-8001FFE 0.800 VIN=15V, Io=0.2A 0.1 VIN=15V, Io=0.2A, Tc=0 100 83 VIN=15V, Io=2A 300 VIN=15V, Io=2A 55 VIN=10 30V, Io=2A 15 VIN=15V, Io=0.2 3.5A 0.816 V mV/ % 330 kHz 80 mV 50 mV 3.6 * 5 S S / VSSL SS A VIN=15V 0.5 30 6 VIN=15V, VSS=0V 6 VIN=15V, Io=0A 2
:GRM18) C4:10nF (murata: GRM18) C5:10nF (murata: GRM18) L1:10H D1:SPB-G56S () SJPB-L4 () R1:46k (Vo=5V) R2:5.1k R3:24k IC 69 1-1-2 IC SI-8000FFE 3.5A 83% TYPVo5VVIN15VIo2A 6 300kHz ON/OFF VoV IoA DVDFPD-TV OA *1 VIN PD1-1 PD1-2 PD2-1 PD2-2 Tj Tstg j-c j-a SI-8001FFE 43 22.7 18.2 2.15 1.72 +150 -40150 5.5 58 V Tj=150 Tj=125 Tjmax=150 Tj=125 W W /W /W *130 125 SI-8001FFE (0.824) 3.5 TO220F-5 SI-8001FFE Vo3*140 0.824 03.5 -30125 -3085 VIN VO IO Tjop Top V V A 4.5VVo+3V Ta25Vo5VR14.2kR20.8k Low Low min. 0.784 VADJ SS VADJ/T fo VOLINE VOLOAD IS VSSL ISSL Iq IqOFF 270 SI-8001FFE typ. 0.800 VIN=15V, Io=0.2A 0.1 VIN=15V, Io=0.2A, Tc=0100 83 VIN=15V, Io=2A 300 VIN=15V, Io=2A 55 VIN=1030V, Io=2A 15 VIN=15V, Io=0.23.5A max. 0.816 V mV/ % 330 kHz 80 mV 50 mV 3.6 A VIN=15V 0.5 30 6 VIN=15V, VSS=0V 6 VIN=15V, Io=0A 200 VIN=15V, Vss=0V V A mA 600 A 5SS SS ON/OFF SSVSSLSS SI-8000FFE SI-8000FFE SI-8000FFE ON/OFF ON/OFF 5 SS SS 5 SS C3 5 SS C3 3.7Vtyp VO.ON/OFF 70 IC +VO.ON/O
er Io (A) 3.5 Package TO220F-5 Function Soft start Absolute Maximum Ratings * Built-in soft start circuit (Output ON/OFF available) Parameter Input Voltage Applications * DVD recorder, FPD-TV * OA equipment, such as printers * Onboard local power supplies SI-8001FFE Variable(0.8 to 24) Vo (V) Symbol Ratings Unit SI-8001FFE VIN 43 Power Dissipation PD1-1 22.7 (With infinite heatsink) PD1-2 18.2 Power Dissipation PD2-1 2.15 (Without heatsink) PD2-2 1.72 Tj +150 Storage Temperature Tstg -40 to +150 C Thermal Resistance (Junction to Case) j-c 5.5 C/W Thermal Resistance (Junction to Ambient Air) j-a 58 C/W Junction Temperature*1 Conditions V Limited by thermal protection circuit, Tj=150C W Tj=125C Limited by thermal protection circuit, Tjmax=150C W Tj=125C C *: This product has built-in thermal protection circuits that may activate when the junction temperature exceeds 130C. The recommended design for the junction temperature during IC operation is below 125C. Recommended Operating Condit
SI-8001FFE DC-to-DC Step-Down Converter Features and Benefits Description 3.5 A output current supplied in a small, through-hole mount power package High efficiency: 83% at VIN = 15 V, IO = 2.0 A,VO = 5 V Requires only six external components (optional soft start requires an additional capacitor) Oscillation circuit built-in (frequency 300 kHz typical) Constant-current mode overcurrent protection circuit and overtemperature protection circuit built-in Soft start function built-in (can be implemented as an on/off function; output-off state at low level) Low current consumption during output-off state The SI-8001FFE DC voltage regulator is a DC-to-DC buck convertor that attains an oscillation frequency of 300 kHz, and has an integrated miniaturized choke coil, allowing it to serve as a small, high efficiency power supply in a compact TO220F package. The internal switching regulator function provides high efficiency switching regulation without any need for adjustment. The device requir
er Io (A) 3.5 Package TO220F-5 Function Soft start Absolute Maximum Ratings * Built-in soft start circuit (Output ON/OFF available) Parameter Input Voltage Applications * DVD recorder, FPD-TV * OA equipment, such as printers * Onboard local power supplies SI-8001FFE Variable (0.8 to 24) Vo (V) Symbol Ratings Unit SI-8001FFE VIN 43 Power Dissipation PD1-1 22.7 (With infinite heatsink) PD1-2 18.2 Power Dissipation PD2-1 2.15 (Without heatsink) PD2-2 1.72 Tj +150 Storage Temperature Tstg -40 to +150 C Thermal Resistance (Junction to Case) j-c 5.5 C/W Thermal Resistance (Junction to Ambient Air) j-a 58 C/W Junction Temperature*1 Conditions V Limited by thermal protection circuit, Tj=150C W Tj=125C Limited by thermal protection circuit, Tjmax=150C W Tj=125C C *: This product has built-in thermal protection circuits that may activate when the junction temperature exceeds 130C. The recommended design for the junction temperature during IC operation is below 125C. Recommended Operating Condi
er Io (A) 3.5 Package TO220F-5 Function Soft start Absolute Maximum Ratings * Built-in soft start circuit (Output ON/OFF available) Parameter Input Voltage Applications * DVD recorder, FPD-TV * OA equipment, such as printers * Onboard local power supplies SI-8001FFE Variable (0.8 to 24) Vo (V) Symbol Ratings Unit SI-8001FFE VIN 43 Power Dissipation PD1-1 22.7 (With infinite heatsink) PD1-2 18.2 Power Dissipation PD2-1 2.15 (Without heatsink) PD2-2 1.72 Tj +150 Storage Temperature Tstg -40 to +150 C Thermal Resistance (Junction to Case) j-c 5.5 C/W Thermal Resistance (Junction to Ambient Air) j-a 58 C/W Junction Temperature*1 Conditions V Limited by thermal protection circuit, Tj=150C W Tj=125C Limited by thermal protection circuit, Tjmax=150C W Tj=125C C *: This product has built-in thermal protection circuits that may activate when the junction temperature exceeds 130C. The recommended design for the junction temperature during IC operation is below 125C. Recommended Operating Condi
SW 3 FB 5 D1 GND VFB C2 R2 IADJ GND C110F/50V murataGRM55DB31H106KA87 C222F/16V murataGRM32ER71A226KE20 C3560pF murataGRM18 C410nF murataGRM18 C510nF murataGRM18 L110H D1SPB-G56SSanken SJPB-L4Sanken R146k Vo = 5 V R25.1k R324k 65 1-1-2 SI-8000FFE * 3.5 A SI-8001FFE 0.824 3.5 TO220F-5 * 83%TYP Vo = 5 VVIN = 15 V Io = 2 A * 6 * 300 kHz * * / VoV IoA * DVD FPD-TV * * *1 VIN PD1-1 PD1-2 PD2-1 PD2-2 Tj Tstg j-c j-a SI-8001FFE 43 22.7 18.2 2.15 1.72 +150 -40150 5.5 58 V Tj=150C Tj=125C Tjmax=150C Tj=125C W W C C C/W C/W * 130C 125C SI-8001FFE Vo3*140 0.824 03.5 -30125 -3085 VIN VO IO Tjop Top V V A C C * 4.5 V Vo +3 V Ta = 25C Vo = 5 V R1 = 4.2 kR2 = 0.8 k SS VADJ VADJ/T fo VOLINE VOLOAD IS VSSL ISSL Iq IqOFF 0.784 270 SI-8001FFE 0.800 VIN=15V, Io=0.2A 0.1 VIN=15V, Io=0.2A, Tc=0 100C 83 VIN=15V, Io=2A 300 VIN=15V, Io=2A 55 VIN=10 30V, Io=2A 15 VIN=15V, Io=0.2 3.5A 0.816 V mV/C % 330 kHz 80 mV 50 mV 3.6 * 5 SS / VSSLSS A VIN=15V 0.5 30 6 VIN=15V, VSS=0V 6 VIN=15V,
SI-8001FFE Variable (0.8 to 24) Vo (V) Io (A) 3.5 Function Soft start * High efficiency: 83% (Vo = 5 V, VIN = 15 V, Io = 2 A) * Requires only 6 discrete components * Built-in reference oscillator (300 kHz) * Built-in drooping-type overcurrent and thermal protection circuits * Built-in soft start circuit (Output ON/OFF available) Applications Absolute Maximum Ratings Parameter Input Voltage Symbol Ratings VIN 43 Power Dissipation PD1-1 22.7 (With infinite heatsink) PD1-2 18.2 Power Dissipation PD2-1 2.15 (Without heatsink) PD2-2 1.72 Tj +150 Junction Temperature*1 Unit SI-8001FFE V Limited by thermal protection circuit, Tj=150C W Tj=125C Limited by thermal protection circuit, Tjmax=150C W Tj=125C C * DVD recorder, FPD-TV Storage Temperature Tstg -40 to +150 C * OA equipment, such as printers Thermal Resistance (Junction to Case) j-c 5.5 C/W Thermal Resistance (Junction to Ambient Air) j-a 58 C/W * Onboard local power supplies Conditions *: This product has built-in thermal protection
er Io (A) 3.5 Package TO220F-5 Function Soft start Absolute Maximum Ratings * Built-in soft start circuit (Output ON/OFF available) Parameter Input Voltage Applications * DVD recorder, FPD-TV * OA equipment, such as printers * Onboard local power supplies SI-8001FFE Variable(0.8 to 24) Vo (V) Symbol Ratings Unit SI-8001FFE VIN 43 Power Dissipation PD1-1 22.7 (With infinite heatsink) PD1-2 18.2 Power Dissipation PD2-1 2.15 (Without heatsink) PD2-2 1.72 Tj +150 Storage Temperature Tstg -40 to +150 C Thermal Resistance (Junction to Case) j-c 5.5 C/W Thermal Resistance (Junction to Ambient Air) j-a 58 C/W Junction Temperature*1 Conditions V Limited by thermal protection circuit, Tj=150C W Tj=125C Limited by thermal protection circuit, Tjmax=150C W Tj=125C C *: This product has built-in thermal protection circuits that may activate when the junction temperature exceeds 130C. The recommended design for the junction temperature during IC operation is below 125C. Recommended Operating Condit
SI-8001FFE Variable (0.8 to 24) Vo (V) Io (A) 3.5 Function Soft start * High efficiency: 83% (Vo = 5 V, VIN = 15 V, Io = 2 A) * Requires only 6 discrete components * Built-in reference oscillator (300 kHz) * Built-in drooping-type overcurrent and thermal protection circuits * Built-in soft start circuit (Output ON/OFF available) Applications Absolute Maximum Ratings Parameter Symbol Input Voltage Ratings VIN 43 Power Dissipation PD1-1 22.7 (With infinite heatsink) PD1-2 18.2 Power Dissipation PD2-1 2.15 (Without heatsink) PD2-2 1.72 Tj +150 Junction Temperature*1 Unit SI-8001FFE V Limited by thermal protection circuit, Tj=150C W Tj=125C Limited by thermal protection circuit, Tjmax=150C W Tj=125C C * DVD recorder, FPD-TV Storage Temperature Tstg -40 to +150 C * OA equipment, such as printers Thermal Resistance (Junction to Case) j-c 5.5 C/W Thermal Resistance (Junction to Ambient Air) j-a 58 C/W * Onboard local power supplies Conditions *: This product has built-in thermal protection
When Vo = 5 V) R2:5.1k R3:24k*1 *1: When Vo=5V ICs 51 1-1-3 DC/DC Converter ICs SI-8000FFE Series Full-Mold, Separate Excitation Step-down Switching Mode Features Lineup * Compact full-mold package (equivalent to TO220) * Output current: 3.5 A Part Number SI-8001FFE Variable (0.8 to 24) Vo (V) Io (A) 3.5 Function Soft start * High efficiency: 83% (Vo = 5 V, VIN = 15 V, Io = 2 A) * Requires only 6 discrete components * Built-in reference oscillator (300 kHz) * Built-in drooping-type overcurrent and thermal protection circuits * Built-in soft start circuit (Output ON/OFF available) Applications Absolute Maximum Ratings Parameter Input Voltage Symbol Ratings VIN 43 Power Dissipation PD1-1 22.7 (With infinite heatsink) PD1-2 18.2 Power Dissipation PD2-1 2.15 (Without heatsink) PD2-2 1.72 Tj +150 Junction Temperature*1 Unit SI-8001FFE V Limited by thermal protection circuit, Tj=150C W Tj=125C Limited by thermal protection circuit, Tjmax=150C W Tj=125C C * DVD recorder, FPD-TV Storage Temp
nts and variation range are shown in the following table in the case that the output voltage is set for the output voltage setting resistors R1 and R2 by the resistance constants of existing accuracy of 1% and 0.5%. Table of constants for R1/R2 Vo setting SI-8001FFER1,R2Vo Resistance Constants of Accuracy of 1% Resistance Constants of Accuracy of 0.5% 1% 0.5% Target Vout(V) Calculated Accuracy (%) Accuracy (%) R1 R2( (%) R1 R2( Calculated (%) Vout (V) +2.61 +2.26 1.2 402 806 402 806 -2.73 -2.41 +2.72 +2.72 1.8 1000 806 1010 806 -3.48 -2.41 +4.15 +2.64 2.5 1690 787 1690 796 -2.64 -2.73 +2.67 +2.86 3.3 2490 806 2490 796 -4.31 -2.67 +3.50 +2.68 5 4220 806 4170 796 -3.85 -3.00 +3.75 +2.95 9 8250 806 8160 796 -3.89 -2.88 +3.77 +2.58 12 11000 787 11100 796 -3.96 -3.27 +3.25 +3.11 24 23200 806 23400 806 -4.57 -2.84 The wiring of ADJ terminal, R1 and R2 that run parallel to the flywheel diode should be avoided, because switching noise may interfere with the detection voltage to cause abnormal oscillation