MAX890LESA/V+

更新时间： 2024-11-23 13:11:07

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MAX890LESA/V+ 数据手册

19-1146; Rev 4; 4/11

1.2A, Current-Limited, High-Side

P-Channel Switch with Thermal Shutdown

MAX890L

General Description

Features

The MAX890L smart, low-voltage, P-channel, MOSFET

power switch is intended for high-side load-switching

applications. This switch operates with inputs from

+2.7V to +5.5V, making it ideal for both +3V and +5V

systems. Internal current-limiting circuitry protects the

input supply against overload. Thermal-overload pro-

tection limits power dissipation and junction tempera-

tures.

♦ +2.7V to +5.5V Input Range

♦ Programmable Current Limit

♦ Low Quiescent Current

10µA (typ) at V = +3.3V

0.1µA (typ) with Switch Off

♦ Thermal Shutdown

The MAX890L’s maximum current limit is 1.2A. The cur-

rent limit through the switch is programmed with a

resistor from SET to ground. The quiescent supply cur-

rent is a low 10µA. When the switch is off, the supply

current decreases to 0.1µA.

♦ FAULT Indicator Output

♦ 0.09Ω (typ) On-Resistance

The MAX890L is available in an 8-pin SO package.

Applications

Ordering Information

PCMCIA Slots

PIN-

PACKAGE

CURRENT

LIMIT

PART

TEMP RANGE

Access Bus Slots

Portable Equipment

MAX890LC/D

0°C to +70°C Dice**

-40°C to +85°C 8 SO

1.2A

MAX890LESA+

MAX890LESA/V+ -40°C to +85°C 8 SO

*To order this unit in tape and reel, add (T) to the end of the

part number.

**Dice are tested at T = +25°C.

+Denotes a lead(Pb)-free/RoHS-compliant package.

/V denotes an automotive qualified part.

Typical Operating Circuit

Pin Configuration

TOP VIEW

INPUT

OUT

OUTPUT

0.1μF

FAULT

OUT

MAX890L

100kΩ

MAX890L

FAULT

GND

ON/OFF

OUT

1μF

SET

GND

SET

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7 8

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