Datasheet

Device summary ST890
4/21 Doc ID 8649 Rev 9
Figure 2. DFN8L (3 x 3 mm) pin connection (top view)
Table 3. DFN8L (3 x 3 mm) pin description
Pin n. Symbol Name and function
1, 2 IN Input P-channel MOSFET source. Bypass IN with a 1 μF capacitor to ground.
3ON
Active-low switch ON input. A logic low turns the switch ON.
4 GND Ground
5 SET
Set current limit input. A resistor from SET to GND sets the current limit for the
switch.
6, 7 OUT
Switch output. P-channel MOSFET drain. Bypass OUT with a 0.1 μF capacitor
to ground.
R
SET
= 1.24 x 1110 / I
LIM
, where I
LIM
is the desired current limit in Amperes.
8FAULT
Fault indicator output. This open drain output goes low when in current limit or
when the die temperature exceeds 135 °C.
Exposed
pad
NC
The exposed pad is not internally connected. It can be connected to PCB
groundplane for best thermal performance.
1
2
3
4
8
7
6
5
IN
IN
ON
GND
FAULT
OUT
OUT
SET
CS00025