BTS721L1 Datasheet, PDF (1/15 Pages) Siemens Semiconductor Group – Smart Four Channel Highside Power Switch (Overload protection Current limitation Short-circuit protection Thermal shutdown)

PROFET® BTS721L1
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 protection}1)
• _{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 Vbb protection}
• _{Electrostatic discharge (ESD) protection}
Product Summary
Overvoltage Protection
Operating voltage
active channels:
On-state resistance R_ON
Nominal load current I_L(NOM)
Current limitation I_L(SCr)
V_bb(AZ)
Vbb(on)
43 V
5.0 ... 34 V
one two parallel four parallel
100
50
25 mΩ
2.9
4.3
6.3 A
8
8
8
A
P-DSO-20
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
1,10,
11,12,
15,16,
19,20
3
5
7
9
18
17
14
13
4
8
2
6
Symbol
V_bb
IN1
IN2
IN3
IN4
OUT1
OUT2
OUT3
OUT4
ST1/2
ST3/4
GND1/2
GND3/4
Function
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
Input 1 .. 4, activates channel 1 .. 4 in case of
logic high signal
Output 1 .. 4, protected high-side power output
of channel 1 .. 4. Design the wiring for the
max. short circuit current
Diagnostic feedback 1/2 of channel 1 and
channel 2, open drain, low on failure
Diagnostic feedback 3/4 of channel 3 and
channel 4, open drain, low on failure
Ground 1/2 of chip 1 (channel 1 and channel 2)
Ground 3/4 of chip 2 (channel 3 and channel 4)
Pin configuration (top view)
V_bb
GND1/2
IN1
ST1/2
IN2
GND3/4
IN3
ST3/4
IN4
V_bb
1•
2
3
4
5
6
7
8
9
10
20 V_bb
19 V_bb
18 OUT1
17 OUT2
16 V_bb
15 V_bb
14 OUT3
13 OUT4
12 V_bb
11 V_bb
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.
Semiconductor Group
1 of 15
2003-Oct-01