st890b STMicroelectronics, st890b Datasheet - Page 4

• Manufacturer Part Number: st890b
• Description: 1.2 A Current Limited High Side Power Switch With Thermal Shutdown
• Manufacturer: STMicroelectronics

Device summary
4/17
Figure 2.
Table 3.
Pin N.
1, 2
6,7
3
4
5
8
DFN8L (3 x 3 mm) pin connection (top view)
DFN8L (3 x 3 mm) pin description
Symbol
FAULT
GND
OUT
SET
ON
IN
GND
ON
IN
IN
1
2
3
4
Input P-channel MOSFET source. Bypass IN with a 1 μF
capacitor to ground
Active low switch ON input. A logic low turns the switch ON
Ground
Set current limit input. A resistor from SET to GND sets the
current limit for the switch.
Switch output. P-channel MOSFET drain. Bypass OUT with
a 0.1 μF capacitor to ground
Fault indicator output. This open drain output goes low
when in current limit or when the die temperature exceeds
135 °C
8
7
6
5
FAULT
OUT
OUT
SET
Name and function
ST890B, ST890C, ST890D
CS00025