Smart High-Side Power Switch
BTS721L1
Open-load detection, OUT1...4
GND disconnect with GND pull up
(channel 1/2 or 3/4)
ON-state diagnostic condition:
V
ON
< R
·
I
; IN high
ON L(OL)
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ꢂ
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ꢇꢈ
ꢂ
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Any kind of load. If V
> V - V
device stays off
IN(T+)
GND
IN
Due to V
GND
> 0, no V = low signal available.
ST
OFF-state diagnostic condition:
V
OUT
> 3 V typ.; IN low
V
disconnect with energized inductive
bb
load
#
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ꢍ66
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For an inductive load current up to the limit defined by E
AS
(max. ratings see page 3 and diagram on page 10) each
switch is protected against loss of V
.
bb
GND disconnect
Consider at your PCB layout that in the case of Vbb dis-
connection with energized inductive load the whole load
current flows through the GND connection.
(channel 1/2 or 3/4)
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ꢄ
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ꢂ
ꢃꢃ
ꢂ
ꢃꢃ
ꢄꢅꢆ
ꢄꢅꢊ
ꢇꢈ
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ꢀꢁꢂꢃꢄꢅ
ꢍꢎꢈꢊ
%ꢅꢌ
ꢂ
ꢄꢅꢆ ꢄꢅꢊ
ꢂ
ꢂ
%ꢅꢌ
ꢂ
ꢇꢈ
Any kind of load. In case of IN=high is V
OUT
≈ V -V .
IN IN(T+)
Due to V
GND
> 0, no V = low signal available.
ST
Semiconductor Group
9
2003-Oct-01
Data Sheet
10
Rev. 1.3, 2010-03-16
INFINEON [ Infineon ]
