Datasheet
Data Sheet 4 V1.0, 2007-05-25
Smart High-Side Power Switch
BSP452
Parameter and Conditions Symbol Values Unit
at
T
j
= 25 °C,
V
bb
= 13.5V unless otherwise specified
min typ max
Operating Parameters
Operating voltage
8
)
T
j
=-40...+150°C
V
bb(on)
5.0 -- 34 V
Undervoltage shutdown
T
j
=-40...+150°C
V
bb(under)
3.5 -- 5 V
Undervolta
g
e restart
T
j
=-40...+25°C
T
j
=+150°C
V
bb(u rst)
-- -- 6.5
7.0
V
Undervolta
g
e restart of char
g
e pumpe
see diagram page 7
V
bb(ucp)
-- 5.6 7 V
Undervoltage hysteresis
∆
V
bb(under)
=
V
bb(u rst)
-
V
bb(under)
∆
V
bb(under)
-- 0.3 -- V
Overvoltage shutdown
T
j
=-40...+150°C
V
bb(over)
34 -- 42 V
Overvoltage restart
T
j
=-40...+150°C
V
bb(o rst)
33 -- -- V
Overvoltage hysteresis
T
j
=-40...+150°C ∆
V
bb(over)
-- 0.7 -- V
Standby current (pin 4),
V
in = low
T
j
=-40...+150°C
I
bb(off)
-- 10 25 µA
Operating current (pin 2),
V
in = 5 V
I
GND
-- 1 1.6 mA
leakage current (pin 1)
V
in = low
T
j
=-40...+25°C
T
j
=150°C
I
L(off)
-- 2 5
7
µA
Protection Functions
Current limit (pin 4 to 1)
T
j
= 25°C
V
bb = 20V
T
j
= -40...+150°C
I
L(SC)
0.7
0.7
1.5
--
2
2.4
A
Overvoltage protection
I
bb
=4mA
T
j
=-40...+150°C
V
bb(AZ)
41 -- -- V
Output clamp (ind. load switch off)
at
V
OUT
=
V
bb
-
V
ON(CL)
,
I
bb
= 4mA
V
ON(CL)
41
47
-- V
Thermal overload trip temperature
T
jt
150 -- -- °C
Thermal hysteresis
∆
T
jt
-- 10 -- K
Inductive load switch-off energy dissipation
9
)
T
j Start
= 150 °C, single pulse,
I
L
= 0.5 A,
V
bb
= 12 V
(not tested, specified by design)
E
AS
-- -- 0.5 J
Reverse battery (pin 4 to 2)
10
)
(not tested, specified by design)
-
V
bb
-- -- 30 V
8
)
At supply voltage increase up to
V
bb
= 5.6 V typ without charge pump,
V
OUT
≈
V
bb
- 2 V
9
)
While demagnetizing load inductance, dissipated energy in PROFET is
E
AS
=
∫
V
ON(CL)
*
i
L
(t) dt, approx.
E
AS
=
1
/
2
*
L
*
I
2
L
* (
V
ON(CL)
V
ON(CL)
-
V
bb
)
10
)
Requires 150 Ω resistor in GND connection. Reverse load current (through intrinsic drain-source diode) is normally limited by the
connected load.
7