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PDF VB325SP Data sheet ( Hoja de datos )
| Número de pieza | VB325SP | |
| Descripción | HIGH VOLTAGE IGNITION COIL DRIVER POWER IC | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de VB325SP (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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® VB325SP
HIGH VOLTAGE IGNITION COIL DRIVER
POWER I.C.
TYPE
VB325SP
Vcl
380V
Icl ICC
10A 150mA
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
10
1
PowerSO-10™
DESCRIPTION
The VB325SP is a high voltage power integrated
circuit made us ing the STMicroelectronics
VIPower™ M1-3 technology, with vertical current
flow pow er dar lington and logic l evel compatible
driving circuit. The enable pin allows to externally
block the s witch when the i nput i s on. B uilt-in
protection c ircuit for c oil c urrent limiting a nd
collector voltage clamping allows the device to be
used as smart, high voltage, high current interface
BLOCK DIAGRAM
VCC
in advanced electronic ignition system. If the input
signal from the micro happens to remain high, the
device pr otects i tself ag ainst ov er-heating by
forcing collector current to s mooth decrease (low
voltage clamp feature) and no und esidered spark
occurs (see figure 4).
BD
HVC
VIN
DRIVER
QUASI PROP.
BASE CURRENT
DIAGNOSTIC
OUTPUT
LIMITER
VCC
VF1
VR -
REFERENCE
VLIM
VTH
THERMAL
PR OTECTION
RSENSE
SN
November 2003
E
LGND
GND
1/9
http://www.Datasheet4U.com
1 page  
VB325SP
Figure 3: S elf C lamped Induc tive S witching Figure 4: Low voltage clamp feature
Current Vs. Time
10
8
T=25º
6
4
T=150º
2
0
200 300 400 500 600 700 800 900 1000
Time in Cla mp (µsec)
Figure 5: Typical application diagram
+5V
µP
1µF 100nF
1K
1K
1K
1nF 18K
VIN VCC
E
BD
HVC
FLAG
LGND
GND
Vbat
ENABLE pin can be alternatively connected to LGND
5/9
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet VB325SP.PDF ] | |
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