MAX8875 데이터 시트보기 (PDF) - Maxim Integrated

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MAX8875

150mA, Low-Dropout Linear Regulator with Power-OK Output

Maxim Integrated 

19-1556; Rev 1; 12/00

150mA, Low-Dropout Linear Regulator

with Power-OK Output

General Description

The MAX8875 low-dropout linear regulator operates from

a +2.5V to +6.5V input range and delivers up to 150mA.

A P-channel MOSFET pass transistor allows its 85µA sup-

ply current to remain independent of the load, making this

device ideal for battery-operated portable equipment

such as PCS phones, cellular phones, cordless phones,

and modems.

The MAX8875 features a power-OK (POK) output that indi-

cates when the output is out of regulation. The device is

available in several preset output voltage versions: 5.0V,

3.3V, 3.0V, 2.7V, 2.5V, or 1.5V. Other features include 1µA

(max) shutdown current, short-circuit protection, thermal

shutdown protection, and reverse-battery protection. The

device comes in a miniature 5-pin SOT23 package.

The MAX8875 is optimized for use with a 1µF ceramic out-

put capacitor. For a pin-compatible, functionally equivalent

device for use with a higher ESR output capacitor, see the

MAX8885 data sheet.

Features

o Power-OK Output

o Small Output Capacitor (1µF ceramic)

o Preset Output Voltages (±1% accuracy)

o Guaranteed 150mA Output Current

o 85µA No-Load Supply Current

o Low 110mV Dropout at 100mA Load (165mV at

150mA load)

o Thermal-Overload and Short-Circuit Protection

o Reverse-Battery Protection

o 60dB PSRR at 100Hz

o 1µA max Shutdown Current

Ordering Information

PART*

TEMP. RANGE PIN-PACKAGE

MAX8875EUKxy-T -40°C to +85°C 5 SOT23-5

*xy is the output voltage code (see Output Voltage Selector

Guide).

PCS Telephones

Cellular Telephones

Cordless Telephones

PCMCIA Cards

Applications

Hand-Held Instruments

Palmtop Computers

Electronic Planners

Modems

Typical Operating Circuit

INPUT

+2.5V TO +6.5V

CIN

1µF

ON

OFF

IN

OUT

MAX8875

SHDN

POK

GND

OUTPUT

PRESET

1.5V TO 5.0V

150mA

COUT

1µF

100k

TO µC

Output Voltage Selector Guide

PART

VOUT (V)

TOP MARK

MAX8875EUK15-T

1.5

ADQI

MAX8875EUK25-T

2.5

ADKZ

MAX8875EUK27-T

2.7

ADLA

MAX8875EUK30-T

3.0

ADLB

MAX8875EUK33-T

3.3

ADLC

MAX8875EUK50-T

5.0

ADLD

Note: Other output voltages between 1.5V and 5.0V are avail-

able in 100mV increments—contact the factory for information.

Minimum order quantity is 25,000 units.

TOP VIEW

Pin Configuration

IN 1

5 OUT

MAX8875

GND 2

SHDN 3

4 POK

SOT23-5

________________________________________________________________ Maxim Integrated Products 1

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

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

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