Dropper Type Dual Output Regulator SI-3101S External Dimensions (unit: mm) ● Single input dual output <sub output (5V/0.07A), main output (5V/0.4A)> ● Main output can be externally turned ON/OFF (with ignition switch, etc.) <most suitable as memory backup power supply> ● Low standby current ( 0.8mA) ● Low dropout voltage 1V ● Built-in constant current type overcurrent, overvoltage and thermal protection circuits ● TO-220 equivalent 5-terminal full-mold 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 a 2.6 ±0.1 5.0 ±0.6 (2.0) b 0.95 ±0.15 (Ta=25ºC) Ratings Unit DC input voltage VIN 40 V Battery reverse connection VINB –13 * 6 V +0.2 0.85 –0.1 Conditions (8.0) Symbol (4.6) Absolute Maximum Ratings Parameter (17.9) Features +0.2 –0.1 0.45 VC VIN CH1 IO1 0.07 * CH2 IO2 0.4 * 1 A PD1 18 W With infinite heatsink PD2 1.5 W Stand-alone without heatsink Tj –40 to +125 ºC Operating temperature TOP –40 to +115 ºC Storage temperature Tstg –40 to +125 ºC Output control terminal voltage P1.7 ±0.7 • 4 = 6.8±0.7 One minute 3.9 (4.3) 8.2 ±0.7 V 1 1. VIN 2. VC (on/off) 3. GND 4. VO1 5. VO2 A Output current 1 2 3 4 5 a: Type No. b: Lot No. Power Dissipation Junction Temperature Junction to case thermal resistance j-c 5.5 ºC/W Junction to ambient-air thermal resistance j-a 66.7 ºC/W (Forming No. 1101) Equivalent Circuit Diagram Stand-alone without heatsink VO1 VIN 1 4 DRIVE OCP TSD Electrical Characteristics DET ERR (Tj=25ºC, VIN =14V unless otherwise specified) REF 5 Ratings Parameter Symbol min typ Unit max VO2 Conditions OCP VIN 6* CH1 VO1 4.80 5.00 5.20 V CH2 VO2 4.80 5.00 5.20 V IO =0.3A 5.30 V VIN =0 to 40V, IO1 and IO2 = 0A up to load short-circuiting Input voltage 35 * 1 V OVP DRIVE 2 IO =0.05A DET ERR Output voltage Channel-channel voltage difference (VO1 —VO2) Dropout voltage Line regulation VO –0.3 CH1 VDIF1 1.0 V IO1 0.05A CH2 VDIF2 1.0 V IO2 0.4A CH1 VO LINE1 10 30 mV VIN =6 to 18V, IO =0.05A CH2 VO LINE2 10 30 mV VIN =6 to 18V, IO =0.3A CH1 VO LOAD1 30 70 mV IO1=0 to 0.05A CH2 VO LOAD2 40 70 mV IO2 =0 to 0.3A 3 2 VC GND CONT Standard Circuit Diagram D3 Load regulation D2 VIN CH1 RREJ1 54 dB f =100 to 120Hz CH2 RREJ2 54 dB f =100 to 120Hz mA IO =0A, VC =0V SI-3101S D1 Ripple rejection 2 Quiescent circuit current Overcurrent protection starting current 0.8 Iq CH1 I (S1) 1 CIN 3 0.1 * 0.5 * 3 I (S1) 2 VCH 4.2 4.5 4.8 V Output OFF VCL 3.2 3.5 3.8 V Output ON I CH 100 µA VC =4.8V Output OFF I CL µA VC =3.2V Output control voltage Overvoltage protection starting voltage VOVP 35 * 4 V Thermal protection starting temperature TTSD 130 * 5 ºC Notes: *1. Since P D (max) = (VIN – VO) • IO1 + (VIN –VO2) • IO2 = 18 (W), VIN (max), IO1 (max) and IO2 (max) may be limited depending on operating conditions. Refer to the Ta—PD curve to compute the corresponding values. *2. Refer to the dropout voltage. *3. IS1 rating shall be the point at which the output voltage VO1 or VO2 (VIN = 14V, IO1 = 0.05A or IO2 = 0.3A) drops to –5%. *4. Overvoltage protection circuit is built only in CH2 (VO2 side). *5. The indicated temperatures are junction temperatures. *6. All terminals, except VIN and GND, are open. 14 4 VO1 + GND CO1 + CO2 A CH2 –100 3 A Output ON Output control current VC + VO2 5 1 CO1 : CO2 : *1 CIN : Output capacitor (47 to 100µF, 50V) Output capacitor (47 to 100µF, 50V) Anti-oscillation capacitors (approx. 47µF). Tantalum capacitors are recommended, especially at low temperatures. *2 D1, D2, D3 : Protection diode. Required as protection against reverse biasing between input and output. (Recommended diode: Sanken EU2Z.) ■ Line Regulation (1) ■ Line Regulation (2) 5.1 ■ Load Regulation (1) 5.1 5.1 VC = 5 (V) I O1 = 0 (A) VC = 5 (V) IO2 = 0 (A) I O2 = 70mA 4.9 Output voltage VO (V) 50mA 5.0 0.3A 5.0 0.5A 5 10 15 20 0 0 25 5 Input voltage V IN (V) 10 15 20 0 25 0 10 20 40 50 60 70 ■ Circuit Current ■ Rise Characteristics 5.1 30 Output current IO (mA) Input voltage V IN (V) ■ Load Regulation (2) 22V 5.0 4.9 4.9 0 0 V IN = 6V 14V 0A Output voltage VO (V) 6 VC = 5 (V) I O1 = 0 (A) 10 Output voltage VO (V) V IN = 6V,14V 5.0 I O1 = 0 (A) Vc = 0 (V) 5 22V 4 Ground current lg (mA) Output voltage VO (V) I O1 = 0mA Output voltage VO (V) VC = 5 (V) I O2 = 0 (A) 100Ω ∞ 3 2 71.4Ω 1 5 4.9 0.1 0.2 0.3 0.4 0.5 0 0.6 0 Output current IO (A) 5 5 Output voltage VO (V) Output voltage VO (V) 6 6V 3 2 OFF ON 1 0 0 1 2 3 4 8 0 10 5 5 10 IO2 = 0 (A) VC = 5 (V) 3 4.5V 1 0.05 0.1 VIN = 6V 14V 22V I O1 = 0 (A) VC = 5 (V) 3 2 1 0 0 4.5V 4 0.15 Output current IO (A) 0 0.1 0.2 0.3 0.4 ■ Ta—PD Characteristics 6 20 VIN = 6 (V) I O1 = I O2 = 5 (mA) With silicone grease G746 (Shin-Etsu Chemical) Heatsink: aluminum With infinite heatsink 4 Output voltage VO (V) 4 3 2 1 VO1 IO1 = I O2 = 5 (mA) VC = 5 (V) 3 0.5 0.6 0.7 0.8 Output current IO (A) ■ Overvoltage Protection Characteristics 5 20 ■ Overcurrent Protection Characteristics (2) 5 2 5 15 Input voltage VIN (V) V IN = 6V 14V 22V 4 0 6 ■ Thermal Protection Characteristics 6 0 6 Output ON/OFF control voltage VC (V) Output voltage VO (V) 6 ■ Overcurrent Protection Characteristics (1) 6 V IN = 14V, 22V 4 Input voltage VIN (V) ■ ON/OFF Control Characteristics 4 2 Output voltage VO (V) 0 VO2 2 1 Power Dissipation PD (W) 0 15 200 • 200 • 2mm (2.3ºC/W) 10 100 • 100 • 2mm (5.2ºC/W) 75 • 75 • 2mm (7.6ºC/W) 5 Without heatsink 0 0 0 130 140 150 160 Ambient 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. 10 20 30 Input voltage VIN (V) 40 0 --30 --20 0 20 40 60 80 100 115 Operating temperature Ta (ºC) 15