Datasheet

Data Sheet 2 Rev 1.3, 2010-03-16
Smart High-Side Power Switch
BTS712N1
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Features
•
Overload protection
•
Current limitation
•
Short-circuit protection
•
Thermal shutdown
•
Overvoltage protection
(including load dump)
•
Fast demagnetization of inductive loads
•
Reverse battery protection
1
)
•
Undervoltage and overvoltage shutdown
with auto-restart and hysteresis

•
Open drain diagnostic output
• Open load detection in OFF-state
•
CMOS compatible input
•
Loss of ground and loss of V
bb
protection
•
Electrostatic discharge (ESD) protection
Application
•
µC compatible power switch with diagnostic feedback
for 12 V and 24 V DC grounded loads
•
All types of resistive, inductive and capacitive loads
•
Replaces electromechanical relays and discrete circuits
General Description
N channel vertical power FET with charge pump, ground referenced CMOS compatible input and diagnostic
feedback, monolithically integrated in Smart SIPMOS

technology.
Providing embedded protective functions.
Pin Definitions and Functions
Pin Symbol Function
1,10,
11,12,
15,16,
19,20
V
bb
Positive power supply voltage. Design the
wiring for the simultaneous max. short circuit
currents from channel 1 to 4 and also for low
thermal resistance
3 IN1 Input 1 .. 4, activates channel 1 .. 4 in case of
5 IN2 logic high signal
7 IN3
9 IN4
18 OUT1 Output 1 .. 4, protected high-side power output
17 OUT2 of channel 1 .. 4. Design the wiring for the
14 OUT3 max. short circuit current
13 OUT4
4 ST1/2 Diagnostic feedback 1/2 of channel 1 and
channel 2, open drain, low on failure
8 ST3/4 Diagnostic feedback 3/4 of channel 3 and
channel 4, open drain, low on failure
2 GND1/2 Ground 1/2 of chip 1 (channel 1 and channel 2)
6 GND3/4 Ground 3/4 of chip 2 (channel 3 and channel 4)
1)
With external current limit (e.g. resistor R
GND
=150 Ω) in GND connection, resistor in series with ST
connection, reverse load current limited by connected load.
Product Summary
Overvoltage Protection
V
bb(AZ)
43 V
Operating voltage
V
bb(on)
5.0 ... 34 V
active channels: one
two parallel four parallel
On-state resistance R
ON
200 100 50
mΩ
Nominal load current ,
/120
1.9 2.8 4.4 A
Current limitation ,
/6&U
 4 4 4 A
Pin configuration (top view)
V
bb
1 • 20 V
bb
GND1/2 2 19 V
bb
IN1 3 18 OUT1
ST1/2 4 17 OUT2
IN2 5 16 V
bb
GND3/4 6 15 V
bb
IN3 7 14 OUT3
ST3/4 8 13 OUT4
IN4 9 12 V
bb
V
bb
10 11 V
bb
P-DSO-20
PG-DSO20