Dropper Type Regulator with Reset Function SI-3011S External Dimensions (unit: mm) ● 5-terminal IC regulator with reset function; 0.7A output current ● Voltage accuracy of ± 2% ● Low Dropout voltage 0.5V at IO 0.3A ● Built-in constant current type overcurrent, overvoltage and thermal protection circuits ● TO-220 equivalent full-mold miniature package 3.2 ±0.2 4.2±0.2 2.8±0.2 16.9±0.3 4.0±0.2 0.5 10.0±0.2 7.9±0.2 Features a (Ta=25ºC) 2.6±0.1 Unit Conditions DC input voltage VIN 35 V Output current IO 0.7 * 1 A PD1 22 W With infinite heatsink PD2 1.8 W Stand-alone without heatsink 5.0±0.6 Ratings 0.95±0.15 + 0.2 (4.6) 0.85 ---0.1 Power Dissipation + 0.2 ---0.1 Junction temperature Tj –40 to +150 ºC Operating temperature TOP –40 to +105 ºC Storage temperature Tstg –40 to +150 ºC Junction to case thermal resistance j-c 5.5 ºC/W Junction to ambient-air thermal resistance j-a 66.7 ºC/W P1.7 1 Ripple rejection RREJ 4.90 max 30 * 1 V 5.00 5.10 V 0.5 V 8.5 0.71 * IS Unit typ 54 Iq Quiescent circuit current Overcurrent protection starting current Source current 12 3 Conditions Equivalent Circuit Diagram 1 f = 100 to 120Hz mA IO = 0A 5 OCP 2.7 2.9 3.1 V 25 35 45 µA VO • 0.90 VO • 0.92 VO • 0.94 V 100 150 mV 4 Reset threshold voltage hysteresis Voth 50 H-level output voltage VRSTH VO –0.1 L-level output voltage VRSTL VRST terminal Source current when H-level I RSTH 0.5 1.3 –10 I RSTL DET GND DLY 1 5 VOth = VOthH* – VOthL V VO = 5.0V (typ), RL = 510Ω V VO = 5.0V (typ), RL = 510Ω mA VO = 5.0V (typ), shorted across VRST and GND mA VRST = 0.5V VIN VO + VDIF VO VOthL VOth GND VDLY Voltage across VDLYth delay capacitor Standard Circuit Diagram *2 D1 1 VIN Power supply * 1 C1 + *2 D2 Co : *1 C1 : 5 VOUT SI-3011S 3 GND 4 RL 2 VRST DLY Reset signal output terminal CO + CDLY Output capacitor (47 to 100µF, 50V) Anti-oscillation capacitors (C1: approx. 47µF). This must be connected to terminals 1 (VIN) and 3 (GND) via the shortest possible routing. An approximately 0.33µF capacitor with good high frequency characteristics must be connected in parallel in case of inductive input lines or long-distance wiring. Tantalum capacitors are recommended for C1 and C0, especially at low temperatures. *2 D1,D2 : Protection diode. Required as protection against reverse biasing between input and output. (Recommended diode: Sanken EU2Z.) [Calculating tDLY] Reset signal delay time tDLY is calculated from the following formula: Reset signal output t DLY = 4 REF2 VO = 5.0V (typ) Input voltage tDLY VRST DLY terminal open Reset Signal Output Timing Chart VRSTL VOUT ERR RESET Notes: *1. Since P D (max) = (VIN – VO) • IO = 22 (W), VIN (max) and IO (max) may be limited depending on operating conditions. Refer to the Ta—P D curve to compute the corresponding values. *2. Refer to the dropout voltage. *3. IS rating shall be the point at which the output voltage VO (VIN = 14V, Io = 0.3A) drops to –5%. *4. VOthL is the Vo threshold voltage at which the VRST terminal turns from high to low. *5. VOthH is the Vo threshold voltage at which the VRST terminal turns from low to high. VothH may be given by VOthL plus VOth. *6. Reset signal output terminal VRST is pulled up in the IC [pull-up resistance 3 kΩ (typ)], allowing direct connection with a logic circuit. VRSTH 2 A I DLY VothL * Sink current when L-level 10 Terminal connections 1. VIN a: Type No. 2. VRST b: Lot No. 3. GND 4. DLY 5. VOUT VIN dB VDLYth Reset threshold voltage level tDLY 5 REF1 Threshold voltage 0 (V) (4.3) Load VDIF 0 (V) 4 DRIVE Dropout voltage VOthH 3 TSD VO Output voltage 2 Stand-alone without heatsink OVP min 6 *2 VIN Output voltage GND 3.9 • 4 = 6.8 (Tj=25ºC, VIN =14V, IO=0.3A unless otherwise specified) Symbol Input voltage * ±0.7 ±0.7 8.2±0.7 Ratings Parameter 6 0.45 ±0.7 (Forming No. 1101) Electrical Characteristics DLY terminal (8.0) Symbol (2.0) b Parameter (17.9) Absolute Maximum Ratings VDLYth + 0.2 • CDLY * IDLY is the current flowing from DLY terminal I DLY shown in the Standard Circuit Diagram. ■ Io vs VDIF Characteristics ■ Line Regulation 5.10 5.10 IO =0.1A 0.3A 0.7A 1.0 0.5 0 0 0.2 0.4 0.6 0.8 5.00 10V 0A 4.95 4.90 1.0 VIN = 14V 5.05 Output voltage VO (V) 5.05 Output voltage VO (V) Dropout voltage VDIF (V) 1.5 ■ Load Regulation 5.00 6V 4.95 4.90 0 5 10 15 20 25 30 0 0.2 ■ Output Voltage Temperature Characteristics 6 IO = 0A 0 50 100 Quiescent current lq (mA) Output voltage VO (V) Output voltage VO (V) 4.9 –40 IO = 0A 4 0.1A 0.3A 0.7A 3 2 IO = 0A 1 0 150 0 2 4 6 15 10 5 0 8 0 Input voltage VIN (V) Ambient temperature Ta (ºC) ■ Overcurrent Protection Characteristics 5 10 15 20 6 IOUT = 5mA 5 5 4 4 4 2 1 3 2 1 0 0 0 0.5 1.0 1.5 ■ Ta—PD Characteristics 25 With silicone grease Heatsink: aluminum With infinite heatsink 100 150 200 Ambient temperature Ta (ºC) Output current IO (A) 20 Power Dissipation PD (W) Output voltage VO (V) 5 Output voltage VO (V) Output voltage VO (V) IO = 5mA VIN = 6V 10V 14V 16V 30 ■ Overvoltage Protection Characteristics 6 3 25 Input voltage VIN (V) ■ Thermal Protection Characteristics 6 0.8 20 5 5.0 0.6 ■ Quiescent Circuit Current ■ Rise Characteristics 5.1 0.4 Output current IO (A) Input voltage V IN (V) Output current IO (A) 3 2 1 0 25 30 35 40 Input voltage VIN (V) Note on Thermal Protection Characteristics: The thermal protection circuit is intended for protection against heat during instantaneous short-circuiting. Its operation, including reliability, is not guaranteed for short-circuiting over an extended period of time. 200 • 200 • 2mm (2.3ºC/W) 15 100 • 100 • 2mm (5.2ºC/W) 10 75 • 75 • 2mm (7.6ºC/W) 5 Without heatsink 0 –40 0 40 80 120 160 Operating temperature Ta (ºC) 11 Dropper Type Regulator with Reset Function SI-3011S ■ VRST Terminal L-level Output Characteristics ■ Reset Threshold Voltage Characteristics 1.0 ■ DLY Terminal Source Current Characteristics 50 6 IOUT = 0A IO = 0A VRST voltage 0.5 IDLY (µA) 4 DLY terminal source current IOUT = 0A 0.1A 0.3A VRST (V) VRST voltage VRST (V) 5 3 2 1 0 0 1 2 3 4 5 0 4.0 6 4.5 Input voltage VIN (V) 1 IO = 0A 5 Delay time t (sec) VRST voltage VRST (V) 100m 4 3 2 VIN = 14V IO = 0A 10m 1m 1 0 0 1 2 3 DLY terminal voltage VDLY (V) 12 4 5 100µ 1000p 0.01µ 0.1µ 1µ 20 10 0 5 10 15 20 Input voltage VIN (V) ■ Reset Signal Delay Characteristics 6 30 0 5.0 Output voltage VO (V) ■ DLY Terminal Output Voltage Characteristics 40 10µ Delay capacitor capacity CDLY ( ) 100µ 25 30