BTS721L1 Datasheet, PDF (5/15 Pages) Siemens Semiconductor Group – Smart Four Channel Highside Power Switch (Overload protection Current limitation Short-circuit protection Thermal shutdown)

BTS721L1
Parameter and Conditions, each of the four channels Symbol
at Tj = 25 °C, V_bb = 12 V unless otherwise specified
Leakage output current (included in I_bb(off))
VIN = 0
Operating current ⁹⁾, V_IN = 5V, _Tj =-40...+150°C
I_GND = I_GND1/2 + I_GND3/4,
one channel on:
four channels on:
I_L(off)
I_GND
Values
Unit
min typ max
--
-- 12 µA
--
2
3 mA
--
8 12
Protection Functions¹⁰⁾
Initial peak short circuit current limit, (see timing
diagrams, page 12)
each channel, _Tj =-40°C: I_L(SCp)
11 18 25 A
Tj ^=25°C:
9 14 22
Tj ^=+150°C:
5
8 14
two parallel channels
twice the current of one channel
four parallel channels four times the current of one channel
Repetitive short circuit current limit,
T_j = T_jt
each channel I_L(SCr)
two parallel channels
four parallel channels
--
8
-- A
--
8
--
--
8
--
(see timing diagrams, page 12)
Initial short circuit shutdown time
T_j,start =-40°C: t_off(SC)
T_j,start = 25°C:
-- 3.8
--
3
-- ms
--
(see page 12 and timing diagrams on page 12)
Output clamp (inductive load switch off)¹¹⁾
at V_ON(CL) = V_bb - V_OUT
Thermal overload trip temperature
Thermal hysteresis
V_ON(CL)
T_jt
∆T_jt
-- 47
150
--
-- 10
-- V
-- °C
-- K
Reverse Battery
Reverse battery voltage ¹²⁾
Drain-source diode voltage (Vout > Vbb)
IL ^{= - 2.9 A, Tj = +150°C}
-V_bb
-V_ON
--
--
-- 610
32 V
-- mV
9) _{Add IST, if IST > 0}
10) _{Integrated protection functions are designed to prevent IC destruction under fault conditions described in the}
data sheet. Fault conditions are considered as "outside" normal operating range. Protection functions are not
designed for continuous repetitive operation.
11) _{If channels are connected in parallel, output clamp is usually accomplished by the channel with the lowest}
V_ON(CL)
12) _{Requires a 150 Ω resistor in GND connection. The reverse load current through the intrinsic drain-source}
diode has to be limited by the connected load. Note that the power dissipation is higher compared to normal
operating conditions due to the voltage drop across the intrinsic drain-source diode. The temperature
protection is not active during reverse current operation! Input and Status currents have to be limited (see
max. ratings page 3 and circuit page 8).
Semiconductor Group
5
2003-Oct-01