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Dropper Type Regulator with Output On/Off Control SI-3001S
Features q Output current of 1.0A q 5-terminal type q Voltage accuracy of 2% q Low dropout voltage 1V at IO 1.0A, 0.5V at IO 0.4A q Built-in overcurrent, overvoltage and thermal protection circuits q Withstands external electromagnetic noises q TO-220 equivalent full-mold package Absolute Maximum Ratings
Parameter DC Input Voltage Output Control Terminal Voltage Output Current 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
External Dimensions (unit: mm)
3.2 0.2 0.5 10.00.2 4.2 0.2 2.8 0.2 4.00.2
7.90.2 16.90.3
a b
2.6 0.1 (2.0)
(Ta = 25C)
Ratings 35 VIN
1 1.0 *
0.950.15 (4.6) 0.85 -0.1
+0.2
Symbol VIN VC IO PD1
Unit V V A W W C C C C/W
Conditions
0.45 P1.70.7* 4=6.80.7
+0.2 -0.1
3.9 0.7
(4.3)
8.2 0.7
18 1.5 - 40 to +125 - 40 to +100 - 40 to +125 5.5
With infinite heatsink Stand-alone without heatsink
1 2 3 4 5
1. GND 2. VC (on/off) 3. Vo 4. Vosense 5. VIN
a: Type No. b: Lot No.
(Forming No. 1101)
j-a
66.7
C/W
Stand-alone without heatsink
Equivalent Circuit Diagram
5 VIN
R1 MIC Tr1
(8.0)
5.0 0.6
(17.9)
3 VO 4 VO sense
R3
Electrical Characteristics
Parameter Input Voltage Output Voltage Dropout Voltage Line Regulation Load Regulation Output Voltage Temperature Coefficient Ripple Rejection Quiescent Circuit Current Overcurrent Protection Starting Current Vc Terminal
Output ON
( Ta = 25C, VIN=14V unless otherwise specified)
Ratings
a
Symbol VIN VO VDIF
min 6 *2 4.90
typ
max 30 *1
Unit V V V V mV mV mV/C dB
Conditions
e d
2
f
R4
b c
R2
5.00
5.10 0.5 1.0
VIN =12 to 16V, IO = 0.4A IO 0.4A IO 1.0A IO=0.4A, VIN =6 to 16V IO =0 to 0.4A IO=5mA, Ta = -10 to +100C f =100 to 120Hz IO = 0A
Vc (on/off)
g
VO LINE VO LOAD VO/T RREJ Iq IS1 VC, IH VC, IL IC, IH IC, IL
3 1.2 * 4
30 100 0.5 54 3 10
1 a : Pre-regulator GND b : Output ON/OFF control c : Thermal protection d : Over-input and overcurrent protection
e : Drive circuit f : Error amplifier g : Reference voltage
Standard Circuit Diagram
D1
mA A V
2.0 *
5
OPEN
3
Control Voltage
Output OFF Output ON
0.8 20 - 0.3
V A mA VC = 2.7V VC = 0.4V
SI-3001S
2 4 1
+
DC input +
Control Current
Output OFF
VIN
C1
C2
CO
DC output
VO
Notes: *1. Since PD(max) = ( VIN - VO) * IO = 18( W ), VIN(max)and IO(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 VO (VIN = 14V, Io = 0.4A) drops to -5%. *4. The output control terminal Vc is pulled up inside the IC. Each input level can be directly driven with LS-TTL ICs. Thus, LS-TTL direct driving is also possible.
Co : Output capacitor (47 to 100F, 50V) C1, C2 : Anti-oscillation capacitors (C1: approx. 47F, C2: approx. 0.33F). These are required for inductive input lines or long wiring. Tantalum capacitors are recommended for C1 and Co, especially at low temperatures. Protection diode. Required as protection against reverse D1 : biasing between input and output. (Recommended diode: Sanken EU2Z.)
6
s Io vs VDIF Characteristicsc
0.5
s Line Regulation
5.1
s Load Regulation
5.1 VIN = 30 ( V) 12 to 16 ( V) 5.5 ( V) 5.0
0.4
Dropout voltage VDIF (V) Output voltage VO (V)
0.3
5.0
0.2
0.1
4.9 0
Output voltage VO (V)
IO = 0 (A) 0.4 (A) 1.0 (A)
4.9 0
0
0
0.5
Output current IO (A)
1.0
0
5
10
15
20
25
30
0
0.5
Output current IO (A)
1.0
Input voltage VIN (V)
s Output Voltage Temperature Characteristics
5.1
s Rise Characteristics
7 6
s Circuit Current
15
Io = 0 (A)
Load resistance Ground current lg (mA)
Output voltage VO (V)
16(V) 5.0
Output voltage VO (V)
12(V)
VIN = 30(V)
5 4 3
10
14(V) 5.5(V)
4.9 0 --50 0 50
VIN -- IOUT condition 5.5 (V) /1.0 (A) 12 (V) /0.4 (A) 14 (V) /0.4 (A) 16 (V) /0.4 (A) 30 (V) / 0 (A)
12 ()
5
2 1 0 0 2 4 6 8 10
Input voltage VIN (V)
5 ()
100
150
0 0 2 4 6 8 10
Input voltage VIN (V)
Ambient temperature Ta (C)
s ON/OFF Control Characteristics
6 5
Output voltage VO (V)
s Overcurrent Protection Characteristics
6
s Thermal Protection Characteristics
6 Io = 0 (A) VIN = 6 (V) 5
I o = 0 (A) VIN = 14 (V)
5 10 (V)
Output voltage VO (V) Output voltage VO (V)
4 3 2 1 0 0 1 2 3 4 5
Output ON/OFF control voltage VC (V)
4 3 2
30 (V)
4 3 2 1 0 0 125
5.5 (V) 20 (V) 14 (V)
ON
OFF
1 0 0 0.5 1.0 1.5 2.0 2.5 3.0
Output current IO (A)
130
135
140
145
150
155
Ambient temperature Ta (C)
s Overvoltage Protection Characteristics
6 5
s Ta --PD Characteristics
20
With infinite heatsink Use G746 silicone grease (Shin-Etsu Chemical) and aluminum heatsink.
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.
Power Dissipation PD (W)
15
200*200*2mm (2.3C/W)
Output voltage VO (V)
4 3 2 1 0 10
10 100*100*2mm (5.2C/W)
75*75*2mm (7.6C/W)
5
Without heatsink
20
30
40
50
0 --30 -20
0
20
40
60
80
100
Input voltage VIN (V)
Operating temperature Ta (C)
7

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