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BTS734L1 Datasheet(PDF) 7 Page - Siemens Semiconductor Group

Part No. BTS734L1
Description  Smart Two Channel Highside Power Switch (Overload protection Current limitation Short-circuit protection Thermal shutdown)
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Maker  SIEMENS [Siemens Semiconductor Group]
Homepage  http://www.siemens.com/
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BTS734L1 Datasheet(HTML) 7 Page - Siemens Semiconductor Group

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BTS 734 L1
Semiconductor Group
7
Truth Table
Channel 1
Input 1
Output 1
Status 1
Channel 2
Input 2
Output 2
Status 2
level
level
BTS 734L1
Normal
operation
L
H
L
H
H
H
Open load
L
H
Z
H
H (L15))
L
Short circuit
to Vbb
L
H
H
H
L16)
H (L17))
Overtem-
perature
L
H
L
L
H
L
Under-
voltage
L
H
L
L
H
H
Overvoltage
L
H
L
L
H
H
L = "Low" Level
X = don't care
Z = high impedance, potential depends on external circuit
H = "High" Level
Status signal valid after the time delay shown in the timing diagrams
Parallel switching of channel 1 and 2 is easily possible by connecting the inputs and outputs in parallel. The
status outputs ST1 and ST2 have to be configured as a 'Wired OR' function with a single pull-up resistor.
Terms
PROFET
IN1
ST1
OUT1
GND1
Vbb
VST1
V
IN1
I IN1
V
bb
IL1
VOUT1
I
GND1
VON1
2
3
4
Leadframe
17,18
Ibb
I ST1
R
GND1
Chip 1
PROFET
IN2
ST2
OUT2
GND2
Vbb
VST2
V
IN2
I IN2
IL2
VOUT2
I
GND2
VON2
6
7
8
Leadframe
13,14
I ST2
R
GND2
Chip 2
Leadframe (Vbb) is connected to pin 1,10,11,12,15,16,19,20
External RGND optional; two resistors RGND1, RGND2 = 150 Ω or a single resistor RGND = 75 Ω for reverse
battery protection up to the max. operating voltage.
15
) With external resistor between output and Vbb
16) An external short of output to Vbb in the off state causes an internal current from output to ground. If RGND is
used, an offset voltage at the GND and ST pins will occur and the VST low signal may be errorious.
17
) Low resistance to V
bb may be detected by no-load-detection


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