3-terminal Dropper Type Regulator SI-3003S Features External Dimensions (unit: mm) ● 3-terminal IC regulator with 0.8A output current ● Voltage accuracy of ±2% ● Low Dropout voltage 0.5V at IO 0.5A, 1V at IO 0.8A ● Built-in constant current type overcurrent, overvoltage and thermal protection circuits ● TO-220 equivalent full-mold package 4.2 ±0.2 3.2 ±0.2 2.8 ±0.2 16.9 ±0.3 7.9 ±0.2 4±0.2 0.5 10 ±0.2 Output current b (Ta =25ºC) Symbol Ratings Unit VIN 35 V 0.8 * IO 2 2.6 ±0.15 Conditions 0.94 ±0.15 (13.5) Parameter DC input voltage 2 max a Absolute Maximum Ratings A PD1 22 W With infinite heatsink PD2 1.8 W Stand-alone without heatsink Tj –40 to +150 ºC Operating temperature TOP –40 to +100 ºC Storage temperature Tstg –40 to +150 ºC +0.2 0.85 –0.1 Power Dissipation Junction to case thermal resistance j-c 5.5 ºC/W Junction to ambient-air thermal resistance j-a 66.7 ºC/W Electrical Characteristics Parameter Symbol Ratings Input voltage VIN 6*2 Output voltage VO 4.90 Dropout voltage VO LINE Load regulation VO LOAD Ripple rejection RREJ Overcurrent protection starting current Stand-alone without heatsink 30 * 1 V 5.00 5.10 V Equivalent Circuit Diagram Conditions VIN VO 5 1 0.5 V IO 0.5A 1.0 V IO 0.8A 30 mV VIN =8 to 16V 100 mV IO =0 to 0.5A dB f=100 to 120Hz mA IO =0A OCP VDIF Line regulation Quiescent circuit current max 54 Iq IS1 3 0.9 * 3 10 Terminal connections 1. VIN a: Type No. 2. (NC) b: Lot No. 3. GND 4. (NC) 5. VO (Forming No. 1115) 1 2 3 4 5 Unit typ 0.45 –0.1 (root dimensions) (Tj=25ºC, VIN =14V, IO =0.5A unless otherwise specified) min +0.2 4•P1.7 ±0.15 = 6.8 ±0.15 DRIVE Junction temperature TSD DET ERR REF 3 GND A 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. IS1 rating shall be the point at which the output voltage VO (VIN=14V, I O=0.5A) drops to –5%. Standard Circuit Diagram D1 *2 1 DC input + *1 VIN Co : C1 C2 N.C 2 SI-3003S 3 5 4 N.C + CO DC output VO Output capacitor (47 to 100µF, 50V) *1 C1,C2 : Anti-oscillation capacitors (C1: approx. 47µF, C2: approx. 0.33µF). These are required for inductive input lines or long wiring. Tantalum capacitors are recommended for C1 and Co, especially at low temperatures. *2 D1 : Protection diode. Required as protection against reverse biasing between input and output. (Recommended diode: Sanken EU2Z.) 8 ■ Io vs VDIF Characteristics ■ Line Regulation 0.5 ■ Load Regulation 5.1 5.1 5.0 5.0 0.3 0.2 0.1 IO =0A =0.2A =0.5A =0.8A 4.9 0 0.2 0.4 0.6 5 10 15 20 25 30 0 35 100 4 3 2 1 150 0 50 2 4 6 8 0 10 Input voltage VIN (V) Ambient temperature Ta (ºC) ■ Overcurrent Protection Characteristics 6 5 5 4 4 14V 1 35V 1.0 1.5 Output current IO (A) 25 30 35 With silicone grease Heatsink: aluminum 20 3 2 1 200 • 200 • 2mm (2.3ºC/W) 15 100 • 100 • 2mm (5.2ºC/W) 10 75 • 75 • 2mm (7.6ºC/W) 5 Without heatsink 0 0.5 20 With infinite heatsink 25V 0 15 25 Power Dissipation PD (W) Output voltage VO (V) VIN =6V 10 ■ Ta —PD Characteristics VIN =6V IO=5mA 3 5 Input voltage VIN (V) ■ Thermal Protection Characteristics 6 2 IO=0.8A =0.5A =0.2A =0A 100 0 0 150 0.8 200 Ground current lg (mA) Output voltage VO (V) 50 0.6 250 IO =0A =0.5A =0.8A 5 VIN / IO: 30V / 0A 14V / 0.5A 6V / 0.8A 0.4 ■ Circuit Current 6 0 0.2 Output current IO (A) ■ Rise Characteristics 5.1 4.9 –50 4.9 Input voltage VIN (V) ■ Output Voltage Temperature Characteristics 5.0 VIN =35V =25V =14V =6V 0 0 0.8 Output current IO (A) Output voltage VO (V) IO=0.5, 0.8A =0.2A =0A 0 0 Output voltage VO (V) Output voltage VO (V) Output voltage VO (V) Dropout voltage VDIF (V) 0.4 2.0 2.5 0 120 140 160 180 200 Ambient temperature Ta (ºC) 0 –40 0 40 80 100 Operating temperature Ta (ºC) 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. 9