BTS725L1 View Datasheet(PDF) - Siemens AG
Part Name
Description
Manufacturer
BTS725L1 Datasheet PDF : 14 Pages
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Preliminary BTS 725 L1
Timing diagrams
Both channels are symmetric and consequently the diagrams are valid for channel 1 and
channel 2
Figure 1a: Vbb turn on:
IN1
Figure 3a: Turn on into short circuit:
shut down by overtemperature, restart by cooling
IN1 other channel: normal operation
IN2
V bb
V
OUT1
V
OUT2
ST open drain
Figure 2a: Switching a lamp:
IN
ST
V
OUT
I
L1
I L(SCp)
I L(SCr)
t off(SC)
ST
t
t
Heating up of the chip may require several milliseconds, depending
on external conditions (toff(SC) vs. Tj,start see page 10)
Figure 3b: Turn on into short circuit:
shut down by overtemperature, restart by cooling
(two parallel switched channels 1 and 2)
IN1/2
I +I
L1 L2
I L(SCp)
I
I L(SCr)
L
t
The initial peak current should be limited by the lamp and not by
the initial short circuit current IL(SCp) = 28 A typ. of the device.
toff(SC)
ST1/2
t
ST1 and ST2 have to be configured as a 'Wired OR' function
ST1/2 with a single pull-up resistor.
Semiconductor Group
11
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