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VN920DSP VN920DSP
13TR
DESCRIPTION
The VN920DSP is a monolithic device made by
using
STMicroelectronics
VIPower
M0-3
Technology, intended for driving any kind of load
with one side connected to ground.
Active V
CC
pin voltage clamp protects the device
against low energy spikes (see ISO7637 transient
compatibility table). Active current limitation
BLOCK DIAGRAM
combined with thermal shutdown and automatic
restart protect the device against overload.
The device detects open load condition both is on
and off state. Output shorted to V
CC
is detected in
the off state. Device automatically turns off in case
of ground pin disconnection.
V
CC
V
CC
CLAMP
OVERVOLTAGE
DETECTION
UNDERVOLTAGE
DETECTION
GND
Power CLAMP
INPUT
LOGIC
DRIVER
OUTPUT
CURRENT LIMITER
STATUS
ON STATE OPENLOAD
DETECTION
OVERTEMPERATURE
DETECTION
OFF STATE OPENLOAD
AND OUTPUT SHORTED TO V
CC
DETECTION
(*) See application schematic at page 8
October 2002
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