GS-R4840NV
36 W NEGATIVE SWITCHING REGULATOR
Type
GS-R4840NV
V
in
-40 to -60 V
V
out
-22 to -60 V
I
out
-600 mA
FEATURES
Digital input for voltage selection
Short-circuit protection
Overvoltage protection
Thermal protection
Softstart
Fault signal indication output
High efficiency (>80%)
DESCRIPTION
The GS-R4840NV is a negative input, negative
output switching voltage regulator that provides up
to 36W output power without input-output isolation.
The output voltage is programmable by input logic
signals that allow 64 steps (6 bit) of regulated
output, from -22 to -60V.
ELECTRICAL CHARACTERISTICS
(T
amb
= 25擄C unless otherwise specified)
Symbol
Vi
Vir
Vo
Vor
Voov
Io
Iol
Iosc
fs
畏
Rth
Tcop
T stg
Parameter
Input Voltage
Input Ripple Voltage
Output Voltage
Output Ripple
Voltage
Output Overvoltage
Protection
Output Current
Current Limit
Output Average
Short Circ. Current
Switching Frequency
Efficiency
Thermal Resistance
Operating Case
Temperature Range
Storage
Temperature Range
Vi = -48V
Vo = -48V
Case to Ambient
0
-20
Io = -600mA
80
Test Conditions
Vo = -22 to -60V
Io = -10 to -600mA
Vi = -40 to -60V
Vi = -40 to -60V
Vo = -22 to -60V
Io = -600mA
Vi = -40 to -60V
Io = -10 to -600mA
Vi = -40 to -60V
Vo = -22 to -60V
Vi = -40 to -60V
Overload Condition
Vi = -40 to -60V
100
82
4
+85
+105
Vo+5%
-10
Io = -600mA
Io = -10 to -600mA
-22
4
Min
-40
Typ
-48
Max
-60
20
-60
10
Vo+10%
-600
-900
-80
Unit
V
mVpp
V
mVpp
V
mA
mA
mA
kHz
%
擄C/W
擄C
擄C
1/3
December 1993
STMICROELECTRONICS
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