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BTS721L1 Datasheet(PDF) 1 Page - Siemens Semiconductor Group

Part No. BTS721L1
Description  Smart Four 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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BTS721L1 Datasheet(HTML) 1 Page - Siemens Semiconductor Group

 
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PROFET®
BTS721L1
Semiconductor Group
1
06.96
Smart Four Channel Highside Power Switch
Features
• Overload protection
• Current limitation
• Short-circuit protection
• Thermal shutdown
• Overvoltage protection
(including load dump)
• Fast demagnetization of inductive loads
• Reverse battery protection1)
• Undervoltage and overvoltage shutdown
with auto-restart and hysteresis
• Open drain diagnostic output
• Open load detection in ON-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. Fully protected by embedded protection
functions.
Pin Definitions and Functions
Pin
Symbol
Function
1,10,
11,12,
15,16,
19,20
Vbb
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 RGND=150 Ω) in GND connection, resistor in series with ST
connection, reverse load current limited by connected load.
Product Summary
Overvoltage Protection
Vbb(AZ)
43
V
Operating voltage
Vbb(on)
5.0 ... 34
V
active channels:
one
two parallel four parallel
On-state resistance
RON
100
50
25
m
Nominal load current
IL(NOM)
2.9
4.3
6.3
A
Current limitation
IL(SCr)
88
8
A
Pin configuration (top view)
Vbb 1
20 Vbb
GND1/2 2
19 Vbb
IN1 3
18 OUT1
ST1/2 4
17 OUT2
IN2 5
16 Vbb
GND3/4 6
15 Vbb
IN3 7
14 OUT3
ST3/4 8
13 OUT4
IN4 9
12 Vbb
Vbb 10
11 Vbb


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