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| qSI-3000B Series SI-3000B Series 5-Terminal, Multi-Function, Full-Mold, Low Dropout Voltage Dropper Type sFeatures Compact full-mold package (equivalent to TO220) Output current: 0.27A Low dropout voltage: VDIF0.5V (at IO=0.27A) Output ON/OFF control terminal is compatible with LS-TTL. (It may be directly driven by LS-TTL or standard CMOS logic.) * Built-in foldback overcurrent, thermal protection circuits * Highly accurate overcurent protection starting current SI-3157B : 0.3 to 0.7A (VIN=18V) SI-3025B : 0.3 to 0.7A (When VIN=18V, setting VO=15.7V) 0.3 to 0.75A (When VIN=18V, setting VO=11.7V) * Variable output voltage type (SI-3025B) also available * * * * sApplications * For BS and CS antenna power supplies * Electronic equipment sAbsolute Maximum Ratings Paarameter DC Input Voltage Voltage of Output Control Terminal DC Output Current Power Dissipation Junction Temperature Ambient Operating Temperature Storage Temperature Thermal Resistance (junction to case) Thermal Resistance (junction to ambient air) Symbol VIN VC IO PD1 PD2 Tj Top Tstg Rth(j-c) Rth(j-a) Ratings 35 VIN 0.27*1 14(With infinite heatsink) 1.5(Without heatsink, stand-alone operation) -40 to +125 -30 to +100 -40 to +125 7.0 66.7(Without heatsink, stand-alone operation) Unit V V A W W C C C C/W C/W (Ta=25C) 28 qSI-3000B Series sElectrical Characteristics Ratings Parameter Input Voltage Output Voltage (SI-3025B: Reference Voltage) Dropout Voltage Line Regulation Load Regulation Temperature Coefficient of Output Voltage (SI-3025B: Temperature Coefficient of Reference Voltage) Ripple Rejection Quiescent Circuit Current Overcurrent Protection Starting Current*3,4 Conditions Control Voltage (Output ON) Control Voltage (Output OFF) VC Control Current Control Current (Output OFF) Terminal*5 (Output ON) VC. IH VC. IL IC. IH Conditions IC. IL Conditions VC=0.4V VC=2.7V -0.3 2.0 0.8 20 Symbol min. VIN VO (VREF) Conditions VDIF Conditions VOLINE Conditions VOLOAD Conditions VO/Ta (VREF/Ta) Conditions RREJ Conditions Iq Conditions IS1 Conditions 0.3 VIN=18V IO0.27A 30 VIN=17 to 27V, IO=0.2A 120 VIN=18V, IO=0 to 0.27A 1.5 VIN=18V, IO=5mA, Tj=0 to 100C 54 VIN=18V, f=100 to 120HZ 3 VIN=18V, IO=0A 0.7 0.3 0.3 2.0 10 300 90 VIN=18V, IO=0.2A 0.5 *2 (Ta=25C unless otherwise specified) SI-3157B typ. max. 27*1 15.70 16.48 min. 6*2,6 2.448 SI-3025B typ. max. 27*1 2.550 VIN=VO+3V, IO=0.2A 0.5 IO0.27A 10 VIN=(VO+1) to 27V, IO=0.27A 10 VIN=VO+3V, IO=0 to 0.27A 0.5 VIN=VO+3V, IO=5mA, Tj=0 to 100C 54 VIN=VO+3V, f=100 to 120HZ 3 VIN=VO+3V, IO=0A 0.75 When VIN=18V, setting VO=11.7V 0.7 When VIN=18V, setting VO=15.7V 10 2.652 Unit V V 14.92 V mV (3025B: mV/V) mV (3025B: mV/V) mV/C dB mA A V 0.8 20 VC=2.7V -0.3 VC=0.4V A mA *1: VIN(max) and IO(max) are restricted by the relation PD(max)=(VIN-VO)*IO=14(W). *2: Refer to the dropout voltage.(Refer to Setting DC Input Voltage on page 7.) *3: IS1 is specified at -5(%) drop point of output voltage VO on the condition that VIN=VO+3V, IO=0.2A. *4: A foldback type overcurrent protection circuit is built into the IC regulator. Therefore, avoid using it for the following applications as it may cause starting errors: (1) Constant current load (2) Plus/minus power (3) Series power (4) VO adjustment by raising ground voltage *5: Output is ON even when output control terminal VC is open. Each input level is equivalent to LS-TTL. Therefore, it may be directly driven by an LS-TTL circuit. *6. When setting output voltage to 5V or less, input voltage needs to be set to 6V or over to operate stably. 29 qSI-3000B Series sOutline Drawing 3.20.2 0.5 (unit:mm) 10.0 0.2 4.20.2 0.2 2.8 4.00.2 7.90.2 (17.9) Part Number Lot Number 16.90.3 2.60.1 (2.0) Plastic Mold Package Type Flammability: UL94V-0 Weight: Approx. 2.3g SI-3157B q w e r t GND VC VO VOS VIN SI-3025B q w e r t GND VC VO VREF VIN 0.95 0.15 +0.2 0.85 -0.1 (4.6) +0.2 0.45 -0.1 P1.70.7x4=6.80.7 3.90.7 (4.3) 8.20.7 12345 Forming No. 1101 sBlock Diagram SI-3157B 5 Tr1 3 MIC 5 (8.0) 5.00.6 SI-3025B Tr1 3 MIC Reg. 4 Reg. 4 ON/OFF Protection Amp. Drive ON/OFF Protection Amp. Drive VREF 2 Equivalent to LS-TTL 2 Equivalent to LS-TTL 1 1 30 VREF qSI-3000B Series sStandard External Circuit SI-3157B D1 *2 3 5 + DC Input VIN *1 C1 C2 OPEN SI-3157B 2 1 4 + C0 DC Output VO SI-3025B D1 *2 5 + *1 DC Input VIN C1 OPEN 2 C2 SI-3025B 1 3 4 R1 *3 R2 *3 + C0 DC Output VO C0 : Output capacitor (47 to 100F) *1 C1 : Oscillation prevention capacitor C2 (C1: Approx. 47F, C2: 0.33F) These capacitors are required if the input line is inductive and in the case of long wiring. Tantalum capacitors are recommended for C1 and C0, particularly at low temperatures. *2 D1 : Protection diode This diode is required for protection against reverse biasing of the input and output. Sanken EU2Z is recommended. *3 R1 : External resistor for setting output voltage R2 Relationship between output voltage VO and external resistors R1 and R2 is as follows. R1 VO=VREF * 1+ (VREF=2.55V(typ.)) R2 R2 must be 2.55k for stable operation. sTa-PD Characteristics 15 Infinite heatsink With Silicon Grease Heatsink: Aluminum 20 Power Dissipation PD (W) 10 0x 20 10 75 0x 10 5x 0x 2m m 0x x7 2m (2 m 5 2m (5. .3 C 2 /W m C/ ) (7. W 6C ) /W ) Without heatsink 0 -30 0 25 50 75 100 Ambient Temperature Ta (C) PD=IO*[VIN(mean)-VO] 31 qSI-3000B Series sTypical Characteristics (When setting VO=15.7V for SI3025B) (Ta=25C) IO vs. VDIF Characteristics 0.5 Temperature Coefficient of Output Voltage(SI-3157B) 16.0 15.9 VIN=18V lO=0A Rise Characteristics(SI-3157B) 20 Dropout Voltage VDIF (V) Output Voltage VO (V) 15.8 15.7 15.6 15.5 15.4 Output Voltage VO (V) 0.4 15 lO=0A 0.1A 0.2A 0.27A 0.3 10 0.2 5 0.1 0 0 0.05 0.1 0.15 0.2 0.25 0.3 15.3 -40 -20 0 20 40 60 80 100 120 140 0 0 5 10 15 20 25 30 Output Current IO (A) Ambient Temperature TC (C) Input Voltage VIN (V) Line Regulation 16.1 Load Regulation 16.1 Overcurrent Protection Characteristics(SI-3157B) 20 15.9 Output Voltage VO (V) Output Voltage VO (V) Output Voltage VO (V) 15.7 lO=0A 0.1A 0.2A 15.9 15 VIN=27V VIN=16.5 15.7 VIN=27V 25V 22V 18V 16.5V 0.27A 15.5 V 15.5 10 15.3 15.3 18V 22V 5 25V 15.1 15.1 14.9 14 16 18 20 22 24 26 28 14.9 0 0.05 0.1 0.15 0.2 0.25 0.3 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Input Voltage VIN (V) Output Current IO (A) Output Current IO (A) Output ON/OFF Control 20 VIN=18V lO=0A Thermal Protection Characteristics 20 Output Voltage VO (V) Output Voltage VO (V) 15 15 VIN=18V lO=10mA 10 10 5 5 0 0 1 2 3 4 0 0 20 40 60 80 100 120 140 160 180 Output ON/OFF Control VC (V) Case Temperature TC (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. 32 |
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