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BTS149 Datasheet(PDF) 5 Page - Infineon Technologies AG

Part # BTS149
Description  Smart Lowside Power Switch
PDF  10 Pages
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

BTS149 Datasheet(HTML) 5 Page - Infineon Technologies AG

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2004-02-02
Page 5
BTS 149
Block Diagramm
Terms
Inductive and overvoltage output clamp
HITFET
IN
D
VIN
ID
VDS
1
IIN
S
Vbb
RL
2
3
HITFET
VZ
D
S
Short circuit behaviour
V IN
ID
I D(SCp)
t 0
tm
t 2
ID(Lim)
t 1
Input circuit (ESD protection)
IN
ESD-ZDI
Source
ESD zener diodes are not designed
for DC current > 2 mA @ VIN>10V.
t0: Turn on into a short circuit
tm: Measurementpoint for ID(lim)
t1: Activation of the fast temperature sensor and
regulation of the drain current to a level where
the junction temperature remains constant.
t2: Thermal shutdown caused by the second
temperature sensor, achieved by an
integrating measurement.



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