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
GS-R400VB
Output
Voltage
(V)
5.1
卤
2%
12.0
卤
4%
15.0
卤
4%
24.0
卤
4%
5.1
卤
2%
5.1 to 40
5.1 to 40
Input
Voltage
(V)
9 to 46
16 to 46
19 to 46
28 to 46
9 to 46
Vo+4 to 46
Vo+4 to 46
Output
Ripple
(mVpp)
25
50
65
100
25
25 to 100
25 to 100
Regulation
Line
(mV/V)
2
5
5
6
2
6
6
Load
(mV/A)
20
40
60
90
20
20 to 90
20 to 90
Efficiency
Notes
(%)
70
80
85
90
70
70 to 90
70 to 90
Reset output
Progr. output voltage
Progr. output voltage and
current. Frequency synchr.
Fixed output voltage
"
"
"
Note:
The line regulation is measured at I
out
=1A
The load regulation is measured at V
in
=V
o
+8V and I
out
=1 to 3A
For V
O
鈮?/div>
36V and I
o
= 4A an external heatsink or forced ventilation are required.
ABSOLUTE MAXIMUM RATINGS
Symbol
Vi
Irt*
Tstg
Tcop
DC Input Voltage
Reset Output Sink Current
Storage Temperature Range
Operating Case Temperature Range
Parameter
Value
48
20
鈥?40 to +105
鈥?20 to +85
Unit
V
mA
掳C
掳C
* GS-R405S only
June 1994
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