ST890 datasheet(4/20 Pages) STMICROELECTRONICS

Part #	ST890

Description	1.2 A current limited high side power switch with thermal shutdown

PDF	20 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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4 / 20 page

Device summary

ST890

4/20

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

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

GND

Ground

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.

RSET = 1.24x1110/ILIM, where ILIM 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

GND

FAULT

OUT

SET

CS00025

ST890 Datasheet(PDF) 4 Page - STMicroelectronics