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 Dropper Type Dual Output Regulator SI-3101S
Features
q Single input dual output q Main output can be externally turned ON/OFF (with ignition switch, etc.) q Low standby current ( 0.8mA) q Low dropout voltage 1V q Built-in constant current type overcurrent, overvoltage and thermal protection circuits q TO-220 equivalent 5-terminal full-mold package
External Dimensions (unit: mm)
3.2 0.2 0.5 10.0 0.2 4.2 0.2 2.8 0.2 4.0 0.2
7.9 0.2 16.9 0.3
Absolute Maximum Ratings
Parameter DC input voltage Battery reverse connection Output control terminal voltage CH1 Output current CH2 Power Dissipation PD2 Junction Temperature Operating temperature Storage temperature Junction to case thermal resistance Junction to ambient-air thermal resistance Tj TOP Tstg
j-c
0.95 0.15 (4.6)
(Ta=25C)
Ratings 40 -13 * 6 VIN 0.07 * 0.4 * 1 18 1.5 -40 to +125 -40 to +115 -40 to +125 5.5 66.7
1
0.85 -0.1
+0.2
VIN VINB VC IO1 IO2 PD1
V V V A A W W C C C C/W C/W Stand-alone without heatsink With infinite heatsink Stand-alone without heatsink
1 2 3 4 5
0.45 P1.7 0.7 * 4 = 6.80.7 3.9
+0.2 -0.1
One minute
(4.3) 8.2 0.7
1. VIN 2. VC (on/off) 3. GND 4. VO1 5. VO2
a: Type No. b: Lot No.
(Forming No. 1101)
Equivalent Circuit Diagram
VIN 1
OCP TSD DRIVE DET ERR REF
j-a
(8.0)
Symbol
Unit
Conditions
5.0 0.6
(2.0)
b
2.6 0.1
(17.9)
a
VO1 4
Electrical Characteristics
Parameter Input voltage CH1 Output voltage CH2 Channel-channel voltage difference (VO1--VO2) Dropout voltage CH1 CH2 Line regulation CH1 CH2 Load regulation CH1 CH2 CH1 Ripple rejection CH2 Quiescent circuit current Overcurrent protection starting current Output control voltage
Output OFF Output ON
(Tj=25C, VIN=14V unless otherwise specified)
Ratings min 6* 4.80 4.80 -0.3
2
5 VO2
Symbol VIN VO1 VO2 VO VDIF1 VDIF2 VO LINE1 VO LINE2 VO LOAD1 VO LOAD2 RREJ1 RREJ2 Iq I (S1) 1 I (S1) 2 VCH VCL ICH ICL VOVP
typ
max 35 *
1
Unit V V V V V V mV mV mV mV dB dB IO =0.05A IO=0.3A
Conditions
OCP DRIVE OVP DET ERR
5.00 5.00
5.20 5.20 5.30 1.0 1.0
2 VC
CONT
3 GND
VIN=0 to 40V, IO1 and IO2 = 0A up to load short-circuiting IO1 0.05A IO2 0.4A VIN=6 to 18V, IO=0.05A VIN=6 to 18V, IO=0.3A IO1=0 to 0.05A IO2=0 to 0.3A f =100 to 120Hz f =100 to 120Hz IO=0A, VC=0V
10 10 30 40 54 54
30 30 70 70
Standard Circuit Diagram
D3 D2 1 D1 2 VC SI-3101S 3 4 VO1 GND CO1 5 VO2 VIN
0.8
3 0.1 *
mA A A
+
CIN
+
+
CO2
CH1 CH2
Output ON
0.5 * 3 4.2 3.2 4.5 3.5 4.8 3.8 100 -100 35 * 4
V V A A V VC=4.8V VC=3.2V
CO1 : CO2 : *1 CIN :
Output control current
Output OFF
Overvoltage protection starting voltage Thermal protection starting temperature
TTSD
130 * 5
C
Output capacitor (47 to 100F, 50V) Output capacitor (47 to 100F, 50V) Anti-oscillation capacitors (approx. 47F). 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.)
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
s Line Regulation (1)
5.1
VC = 5 (V) IO2 = 0 (A)
s Line Regulation (2)
5.1
VC = 5 (V) I O1 = 0 (A)
s Load Regulation (1)
5.1
VC = 5 (V) I O2 = 0 (A)
IO1= 0mA
Output voltage VO (V) Output voltage VO (V)
I O2 =
0A
Output voltage VO (V)
V IN = 6V 14V
5.0
50mA 5.0 70mA
0.3A
5.0
22V
0.5A
4.9 0 0 5 10 15 20 25
4.9 0 0 5 10 15 20 25
4.9 0 0 10 20 30 40 50 60 70
Input voltage VIN (V)
Input voltage V IN (V)
Output current IO (mA)
s Load Regulation (2)
5.1
VC = 5 (V) I O1 = 0 (A) V IN = 6V,14V
s Rise Characteristics
6
s Circuit Current
10 I O1 = 0 (A) Vc = 0 (V)
5 4 3 2 1 0
Ground current lg (mA)
Output voltage VO (V)
Output voltage VO (V)
100
5.0
22V
71.4
5
4.9 0 0 0.1 0.2 0.3 0.4 0.5 0.6
0 2 4 6 8 10
0
0
5
10
15
20
Output current IO (A)
Input voltage VIN (V)
Input voltage VIN (V)
s ON/OFF Control Characteristics
6 5 4 3 2
s Overcurrent Protection Characteristics (1)
6 5 4 3 2 1 0 IO2 = 0 (A) VC = 5 (V)
V IN = 6V 14V 22V
s Overcurrent Protection Characteristics (2)
6 5
Output voltage VO (V)
4.5V VIN = 6V 14V 22V
Output voltage VO (V)
V IN = 14V, 22V
6V
Output voltage VO (V)
4 3 2 1 0
4.5V
I O1 = 0 (A) VC = 5 (V)
OFF
1 0 0 1 2 3 4
ON
5
6
0
0.05
0.1
0.15
0
0.1
0.2 0.3 0.4
0.5 0.6 0.7 0.8
Output ON/OFF control voltage VC (V)
Output current IO (A)
Output current IO (A)
s Thermal Protection Characteristics
6 5 4 3 2 1 0 0 130 140 150 160
Ambient temperature Ta (C) 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.
s Overvoltage Protection Characteristics
6
s Ta--PD Characteristics
20
With infinite heatsink With silicone grease G746 (Shin-Etsu Chemical) Heatsink: aluminum
VIN = 6 (V) I O1 = I O2 = 5 (mA) 5 4 3 2 1 0 10 20 30 40 IO1 = I O2 = 5 (mA) VC = 5 (V)
VO1 VO2
Power Dissipation PD (W)
15
200 * 200 * 2mm (2.3C/W)
Output voltage VO (V)
Output voltage VO (V)
10 100 * 100 * 2mm (5.2C/W)
75 * 75 * 2mm (7.6C/W)
5
Without heatsink
0 --30 --20 0
20
40
60
80
100 115
Input voltage VIN (V)
Operating temperature Ta (C)
15


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