Datasheet

Data Sheet 7 Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1

Parameter and Conditions, each of the four channels Symbol Values Unit
at Tj = 25 °C, V
bb
= 12 V unless otherwise specified
min typ max
Diagnostic Characteristics
Open load detection current,
(on-condition)
each channel, T
j
= -40°C:
T
j
= 25°C:
T
j
= 150°C:
I
L (OL)1
20
20
20
--
--
--
400
300
300
mA
two parallel channels
twice the current of one channel
four parallel channels
four times the current of one channel
Open load detection voltage
13 )
T
j
=-40..+150°C: V
OUT(OL)
2 3 4 V
Internal output pull down
(OUT to GND), V
OUT
=5V T
j
=-40..+150°C: R
O
41030kΩ
Input and Status Feedback
14)
Input resistance
(see circuit page 8) T
j
=-40..+150°C:
R
I
2.5 3.5 6 kΩ
Input turn-on threshold voltage
T
j
=-40..+150°C:
V
IN(T+)
1.7 -- 3.5 V
Input turn-off threshold voltage
T
j
=-40..+150°C:
V
IN(T-)
1.5 -- -- V
Input threshold hysteresis ∆ V
IN(T)
-- 0.5 -- V
Off state input current V
IN
= 0.4 V:
T
j
=-40..+150°C:
I
IN(off)
1 -- 50 µA
On state input current V
IN
= 5 V:
T
j
=-40..+150°C:
I
IN(on)
20 50 90 µA
Delay time for status with open load after switch
off (other channel in off state)
(see timing diagrams, page 14 ), T
j
=-40..+150°C:
t
d(ST OL4)
100 320 800 µs
Delay time for status with open load after switch
off (other channel in on state)
(see timing diagrams, page 14 ), T
j
=-40..+150°C:
t
d(ST OL5)
-- 5 20 µs
Status invalid after positive input slope
(open load)
T
j
=-40..+150°C:
t
d(ST)
-- 200 600 µs
Status output (open drain)
Zener limit voltage T
j
=-40...+150°C, I
ST
= +1.6 mA:
ST low voltage
T
j
=-40...+25°C, I
ST
= +1.6 mA:
T
j
= +150°C, I
ST
= +1.6 mA:
V
ST(high)
V
ST(low)
5.4
--
--
6.1
--
--
--
0.4
0.6
V
13)
External pull up resistor required for open load detection in off state.
14)
If ground resistors R
GND
are used, add the voltage drop across these resistors.