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STMicroelectronics - HIGH VOLTAGE LINEAR REGULATOR POWER I.C.

Numéro de référence VB408
Description HIGH VOLTAGE LINEAR REGULATOR POWER I.C.
Fabricant STMicroelectronics 
Logo STMicroelectronics 





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VB408 fiche technique
VB408
® / VB408B / VB408FI
HIGH VOLTAGE LINEAR REGULATOR
POWER I.C.
TYPE
VB408
VB408FI
VB408B
VIN,OUT
ILIM
400 V 40 mA
VOUT
1.25 to VIN-30 V
s INPUT VOLTAGE UP TO 400 V DC OR 285 V
RMS RECTIFIED
s OUTPUT VOLTAGE ADJUSTABLE FROM 1.25
TO VIN-30V
s OUTPUT CURRENT LIMITED TO 40 mA
s THERMAL SHUT-DOWN PROTECTION
s SHORT CIRCUIT PROTECTION
DESCRIPTION
The VB408, VB408B, VB408FI are fully protected
positive adjustable voltage regulators made using a
proprietary High Voltage VIPowertechnology. The
device can be connected to a D.C. source (up to 400V) or
in off-line application directly to the rectified main (110V/
230V). It is particularly suitable to be used in the
manufacture of DC/DC converters, AC/DC converters,
PRELIMINARY DATA
3
2
1
TO-220
3
2
1
ISOWATT220
3
1
D2PAK
ORDER CODES :
TO-220
ISOWATT220
D2PAK
VB408
VB408FI
VB408B
start-up circuits, pneumatic valve drivers and current
sources. The device is able to drive resistive or inductive
loads with an output voltage from 1.25V to VIN-30V
providing an internally limited output current; it has built in
short circuit and thermal shutdown protections. The
device does not provide galvanic insulation from main.
BLOCK DIAGRAM
VIN
BIAS
CIRCUIT
Power
Stage
RE F 3
T herm al
+ Protection
_
CURRENT
SENSE
Current
Limitation
+
_
REF 2
C ontrol
Signal
+ REF 1
_
VOUT
September 1999
AD J
F C 0 041 0
1/8
1

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