ST890B, ST890C, ST890D

Device summary

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1

Device summary

Figure 1.

SO-8 pin connection (top view)

Table 2.

SO-8 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

6,7

OUT

Switch output. P-channel MOSFET drain. Bypass OUT with

a 0.1

μF capacitor to ground

8FAULT

Fault indicator output. This open drain output goes low

when in current limit or when the die temperature exceeds

135°C

1

2

3

4

8

7

6

5

IN

IN

ON

GND

FAULT

OUT

OUT

SET

CS07570