Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

VB326 Datasheet(PDF) 4 Page - STMicroelectronics

Part No. VB326
Description  HIGH VOLTAGE IGNITION COIL DRIVER POWER I.C
Download  9 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo 

VB326 Datasheet(HTML) 4 Page - STMicroelectronics

   
Zoom Inzoom in Zoom Outzoom out
 4 / 9 page
background image
4/9
VB326SP
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
IEH
High Level Sinked Enable
Current
VE=5V
500
µA
IEL
Low Level Sinked Enable
Current
VE<0.4V
- 200
µA
VBD(off)
Base Darlington Voltage Off
VE=VEH
1V
VBD(on)
Base Darlington Voltage On
VIN=VINH; VE=VEL; IC=6.5A
1.8
V
1
PRINCIPLE OF OPERATION
The VB326SP is mainly intended as a high voltage
power switch device driven by a logic level input
and interfaces directly to a high energy electronic
ignition coil.
The input VIN of the VB326SP is fed from a low
power signal generated by an external controller
that determinesboth dwell time and ignition point.
During Vin high (
4V) the VB326SP increases
current in the coil to the desired, internally set
current level.
After reaching this level, the coil current remains
constant until the ignition point, that corresponds
to the transition of Vin from high to low (typ. 1.9V
threshold).
During the coil current switch-off, the primary
voltage HVC is clamped at an internally set value
Vcl, typically 380V. The transition from saturation
to desaturation, coil current limiting phase, must
have the ability to accomodate an overvoltage.
A maximum overshoot of 20V is allowed.
FEEDBACK
When the collector current exceeds 6.5A, the
feedback signal is turned high and it remains so,
until the input voltage is turned-off.
OVERVOLTAGE
The
VB326SP
can
withstand
the
following
transients of the battery line:
-100V/2msec(Ri =10 )
+100V/0.2msec (Ri =10 )
+50V/400msec (Ri = 4.2 , with VIN= 3V)
Figure 1: Flag current Vs. temperature
Figure 2: Single pulse avalanche energy capability
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
0
1020
304050
607080
90
100
110
L (mH)
Tc=25º
C
Tc=150º


Html Pages

1  2  3  4  5  6  7  8  9 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn