Datasheet
Data Sheet 8 Rev 1.3, 2010-03-16
Smart High-Side Power Switch
BTS712N1
Truth Table
Channel 1 and 2 Chip 1
IN1 IN2 OUT1 OUT2 ST1/2 ST1/2
Channel 3 and 4
(equivalent to channel 1 and 2)
Chip 2
IN3 IN4 OUT3 OUT4 ST3/4 ST3/4
BTS 711L1 BTS 712N1
Normal operation L
L
H
H
L
H
L
H
L
L
H
H
L
H
L
H
H
H
H
H
H
H
H
H
Open load Channel 1 (3) L
L
H
L
H
X
Z
Z
H
L
H
X
H(L
14)
)
H
L
L
H
H
Channel 2 (4) L
H
X
L
L
H
L
H
X
Z
Z
H
H(L
14)
)
H
L
L
H
H
Short circuit to V
bb
Channel 1 (3) L
L
H
L
H
X
H
H
H
L
H
X
L
15)
H
H(L
16)
)
L
15)
H
H
Channel 2 (4) L
H
X
L
L
H
L
H
X
H
H
H
L
15)
H
H(L
16)
)
L
15)
H
H
Overtemperature both channel L
X
H
L
H
X
L
L
L
L
L
L
H
L
L
H
L
L
Channel 1 (3) L
H
X
X
L
L
X
X
H
L
H
L
Channel 2 (4) X
X
L
H
X
X
L
L
H
L
H
L
Undervoltage/ Overvoltage X X 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 (also channel 3 and 4) is easily possible by connecting the inputs and
outputs in parallel (see truth table). If switching channel 1 to 4 in parallel, the status outputs ST1/2 and ST3/4
have to be configured as a 'Wired OR' function with a single pull-up resistor.
Terms
352)(7
,1
67
287
*1'
9
EE
9
287
,
*1'
9
21
/HDGIUDPH
,1
9
287
9
21
,
/
287
9
,1
9
,1
9
67
,
EE
,
,1
,
,1
,
67
,
/
5
*1'
9
EE
&KLS
352)(7
,1
67
287
*1'
9
EE
9
287
,
*1'
9
21
/HDGIUDPH
,1
9
287
9
21
,
/
287
9
,1
9
,1
9
67
,
,1
,
,1
,
67
,
/
5
*1'
&KLS
Leadframe (V
bb
) is connected to pin 1,10,11,12,15,16,19,20
External R
GND
optional; two resistors R
GND1/2
,R
GND3/4
=150 Ω or a single resistor R
GND
=75Ω for
reverse battery protection up to the max. operating voltage.
14)
With additional external pull up resistor
15)
An external short of output to V
bb
in the off state causes an internal current from output to ground. If R
GND
is
used, an offset voltage at the GND and ST pins will occur and the V
ST low
signal may be errorious.
16)
Low resistance to
V
bb
may be detected by no-load-detection