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VB325 Folha de dados(PDF) 1 Page - STMicroelectronics

Nome de Peças VB325
Descrição Electrónicos  HIGH VOLTAGE IGNITION COIL DRIVER POWER I.C.
PDF  9 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VB325 Folha de dados(HTML) 1 Page - STMicroelectronics

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November 2003
1/9
®
VB325SP
HIGH VOLTAGE IGNITION COIL DRIVER
POWER I.C.
s
PRIMARY COIL VOLTAGE INTERNALLY SET
s
COIL CURRENT LIMIT INTERNALLY SET
s
LOGIC LEVEL COMPATIBLE INPUT
s
DRIVING CURRENT QUASI PROPORTIONAL
TO COLLECTOR CURRENT
s
SINGLE FLAG-ON COIL CURRENT
s
LOW VOLTAGE CLAMP THERMAL
SHUTDOWN
DESCRIPTION
The VB325SP is a high voltage power integrated
circuit
made
using
the
STMicroelectronics
VIPower™ M1-3 technology, with vertical current
flow power darlington and logic level compatible
driving circuit. The enable pin allows to externally
block the switch when the input is on. Built-in
protection circuit for coil current limiting and
collector voltage clamping allows the device to be
used as smart, high voltage, high current interface
in advanced electronic ignition system. If the input
signal from the micro happens to remain high, the
device protects itself against over-heating by
forcing collector current to smooth decrease (low
voltage clamp feature) and no undesidered spark
occurs (see figure 4).
TYPE
Vcl
Icl
ICC
VB325SP
380V
10A
150mA
BLOCK DIAGRAM
PowerSO-10™
1
10
DRIVER
GND
REFERENCE
RSENSE
VCC
HVC
VIN
QUASI PROP.
BASE CURRENT
-
THERMAL
PROTECTION
BD
E
DIAGNOSTIC
OUTPUT
VCC
VR
VF1
VLIM
VTH
SN
LIMITER
LGND


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