2004-01-27
Page 5
BTS 452 T
Electrical Characteristics
Parameter and Conditions Symbol Values Unit
at T
= -40...150°C, V
bb
= 12..42V, unless otherwise specified min. typ. max.
Protection Functions
1)
Initial peak short circuit current limit (pin 3 to 5)
T
j
= -40 °C, V
bb
= 20 V, t
m
= 150 µs
T
j
= 25 °C
T
j
= 150 °C
T
j
= -40...+150 °C, V
bb
> 40 V , ( see page 11 )
I
L(SCp)
-
-
4
-
-
6.5
-
5
2)
9
-
-
-
A
Repetitive short circuit current limit
T
j
= T
jt
(see timing diagrams)
V
bb
< 40 V
V
bb
> 40 V
I
L(SCr)
-
-
6
4.5
-
-
Output clamp (inductive load switch off)
at V
OUT
= V
bb
- V
ON(CL)
,
I
bb
= 4 mA
V
ON(CL)
59 63 - V
Overvoltage protection
3)
I
bb
= 4 mA
V
bb(AZ)
62 - -
Thermal overload trip temperature T
t
150 - - °C
Thermal hysteresis ∆T
t
- 10 - K
Reverse Battery
Reverse battery
4)
-V
bb
- - 52 V
Drain-source diode voltage (V
OUT
> V
bb
)
T
j
= 150 °C
-V
ON
- 600 - mV
1
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 .
2
not subject to production test, specified by design
3
see also V
ON(CL)
in circuit diagram on page 7
4
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. Power dissipation is higher compared to normal operating conditions due to the
voltage drop across the drain-source diode. The temperature protection is not active during reverse current operation!
Input current has to be limited (see max. ratings page 3).
