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BTS740S2 Datasheet(PDF) 8 Page - Infineon Technologies AG

Part # BTS740S2
Description  Smart High-Side Power Switch Two Channels: 2 x 30m??Current Sense
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

BTS740S2 Datasheet(HTML) 8 Page - Infineon Technologies AG

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PROFET® BTS 740 S2
Semiconductor Group
8
2003-Oct-01
Truth Table
Input 1
Output 1
Status 1
Current
Sense 1
Input 2
Output 2
Status 2
Current
Sense 2
level
level
level
IIS
Normal
operation
L
H
L
H
H
L
0
nominal
Current-
limitation
L
H
L
H
H
H
0
0
Short circuit to
GND
L
H
L
L21)
H
H
0
0
Over-
temperature
L
H
L
L
H
H
0
0
Short circuit to
Vbb
L
H
H
H
L22)
L
0
<nominal 23)
Open load
L
H
L24)
H
H (L25))
L
0
0
Undervoltage
L
H
L
L
H
L
0
0
Overvoltage
L
H
L
L
H
L
0
0
Negative output
voltage clamp
L
L
H
0
L = "Low" Level
X = don't care
Z = high impedance, potential depends on external circuit
H = "High" Level
Status signal after the time delay shown in the diagrams (see fig 5. page 13)
Parallel switching of channel 1 and 2 is 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. The current
sense outputs IS1 and IS2 have to be connected with a single pull-down resistor.
Terms
PROFET
V
IS1
ST1
GND1
bb
VST1
V
IN1
I ST1
I IN1
V
bb
Ibb
IGND1
17,18
2
Leadframe
3
5
IN1
VIS1
I IS1
VOUT1
VON1
I L1
OUT1
4
RGND1
Chip 1
PROFET
V
IS2
ST2
GND2
bb
VST2
V
IN2
I ST2
I IN2
IGND2
13,14
6
Leadframe
7
9
IN2
VIS2
I IS2
VOUT2
VON2
OUT2
8
I L2
RGND2
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.
21
) The voltage drop over the power transistor is V
bb-VOUT > 3V typ. Under this condition the sense current IIS is
zero
22) 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.
23
) Low ohmic short to Vbb may reduce the output current IL and therefore also the sense current IIS.
24
) Power Transistor off, high impedance
25
) with external resistor between V
BB and OUT


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