GS-R400 Datasheet, PDF (1/5 Pages) STMicroelectronics – 20W TO 140W STEP-DOWN SWITCHING REGULATOR FAMILY

GS-R400 Family
20W TO 140W STEP-DOWN
SWITCHING REGULATOR FAMILY
FEATURES
MTBF in excess of 200,000 hours
4A max output current
46V max input voltage
4V max drop-out voltage
Soft start
Remote logic inhibit/enable
Remote output voltage sense
Non-latching overload and short circuit protection
Crow-bar output overvoltage protection
DESCRIPTION
The GS-R400 series is a versatile family of high
current, high voltage step-down switching voltage
regulators.
The integral heatsink allows a large power handling
capability and it provides also an effective shielding
to minimize EMI.
SELECTION CHART
Type
Ordering
Number
GS-R405
GS-R412
GS-R415
GS-R424
GS-R405S
GS-R400V
Output
Voltage
(V)
Input
Voltage
(V)
5.1 ± 2%
12.0 ± 4%
15.0 ± 4%
24.0 ± 4%
5.1 ± 2%
5.1 to 40
9 to 46
16 to 46
19 to 46
28 to 46
9 to 46
Vo+4 to 46
Output
Ripple
(mVpp)
25
50
65
100
25
25 to 100
Regulation
Line Load
(mV/V) (mV/A)
2
20
5
40
5
60
6
90
2
20
6
20 to 90
GS-R400VB 5.1 to 40 Vo+4 to 46 25 to 100
6
20 to 90
Note: The line regulation is measured at Iout=1A
The load regulation is measured at Vin=Vo+8V and Iout=1 to 3A
For VO ≥ 36V and Io = 4A an external heatsink or forced ventilation are required.
ABSOLUTE MAXIMUM RATINGS
Efficiency
(%)
Notes
70
80
85
90
70
70 to 90
70 to 90
Fixed output voltage
"
"
"
Reset output
Progr. output voltage
Progr. output voltage and
current. Frequency synchr.
Symbol
Parameter
Vi
DC Input Voltage
Irt* Reset Output Sink Current
Tstg Storage Temperature Range
Tcop Operating Case Temperature Range
* GS-R405S only
Value
Unit
48
V
20
mA
– 40 to +105
°C
– 20 to +85
°C
June 1994
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