GS-R405 STMicroelectronics, GS-R405 Datasheet

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GS-R405

Manufacturer Part Number
GS-R405
Description
Manufacturer
STMicroelectronics
Datasheet

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FEATURES
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
Note: The line regulation is measured at I
June 1994
ABSOLUTE MAXIMUM RATINGS
* GS-R405S only
GS-R405
GS-R412
GS-R415
GS-R424
GS-R405S
GS-R400V
GS-R400VB
Symbol
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
T cop
Ordering
T stg
Number
I rt *
V i
Type
The load regulation is measured at V
For V
O
DC Input Voltage
Reset Output Sink Current
Storage Temperature Range
Operating Case Temperature Range
36V and I
12.0
15.0
24.0
5.1 to 40
5.1 to 40
Voltage
5.1
5.1
Output
(V)
o
2%
4%
4%
4%
2%
= 4A an external heatsink or forced ventilation are required.
Vo+4 to 46
Vo+4 to 46
Voltage
16 to 46
19 to 46
28 to 46
9 to 46
9 to 46
Input
(V)
out
in
=1A
=V
o
+8V and I
Parameter
25 to 100
25 to 100
(mVpp)
Output
Ripple
100
25
50
65
25
out
SWITCHING REGULATOR FAMILY
=1 to 3A
(mV/V)
Line
2
5
5
6
2
6
6
Regulation
20W TO 140W STEP-DOWN
20 to 90
20 to 90
(mV/A)
Load
20
40
60
90
20
Efficiency
70 to 90
70 to 90
GS-R400 Family
(%)
70
80
85
90
70
– 40 to +105
– 20 to +85
Fixed output voltage
Reset output
Progr. output voltage
Progr. output voltage and
current. Frequency synchr.
Value
48
20
Notes
"
"
"
Unit
mA
V
C
C
1/5

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GS-R405 Summary of contents

Page 1

... O o ABSOLUTE MAXIMUM RATINGS Symbol DC Input Voltage V i Reset Output Sink Current Storage Temperature Range T stg Operating Case Temperature Range T cop * GS-R405S only June 1994 20W TO 140W STEP-DOWN SWITCHING REGULATOR FAMILY Regulation Output Ripple Line Load (mVpp) (mV/V) (mV/A) 25 ...

Page 2

... Dimensions in mm PIN DESCRIPTION Pin Function Inhibit The module is disabled by a high logic level applied to this pin. 1 Reset Reset output (GS-R405S only Input DC input voltage. Recommended maximum voltage is 46V. 3 Input GND Return for input voltage source. 4 100kHz oscillator output connected to Sync (pin 6) input if the unit is a master and ...

Page 3

... Crowbar Intervention Threshold V cth Total Remote V o Sense Compensation Thermal Resistance GS-R405S only USER NOTES Input Voltage The recommended operating maximum DC input voltage is 46V inclusive of the ripple voltage. Remote Sensing The remote voltage sense compensation range is for a total drop of 500mV equally shared between the load connecting wires ...

Page 4

... V can be adjusted between 5.1 and 40V. o Current Limiting Programming The GS-R400VB current limiting is programmed by using a resistor (see pin function table and fig. 4). Figure 1. Load Connection Figure 2. Remote Inhibit Operation 4/5 The value of the resistor is calculated by using the following formula: ...

Page 5

... SGS-THOMSON Microelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. ...

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