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_______________General Description

The MAX8867/MAX8868 low-noise, low-dropout linear

regulators operate from a 2.5V to 6.5V input and deliver

up to 150mA. Typical output noise for these devices is

150mA. The output voltage is preset to voltages in the

range of 2.5V to 5.0V, in 100mV increments. The

MAX8867 and MAX8868 are pin-compatible with the

MAX8863 and MAX8864, except for the BP pin.

Designed with an internal P-channel MOSFET pass tran-

sistor, the MAX8867/MAX8868 maintain a low 100µA

supply current, independent of the load current and

dropout voltage. Other features include a 10nA logic-

controlled shutdown mode, short-circuit and thermal-

shutdown protection, and reverse battery protection.

The MAX8868 also includes an auto-discharge function,

which actively discharges the output voltage to ground

when the device is placed in shutdown. Both devices

come in regular and thin 5-pin SOT23 packages.

________________________Applications

Cellular Telephones

Modems

Cordless Telephones

Hand-Held Instruments

PCS Telephones

Palmtop Computers

PCMCIA Cards

Electronic Planners

____________________________Features

o Low 55mV Dropout at 50mA Output

(165mV at 150mA output)

o Low 85µA No-Load Supply Current

o Low 100µA Operating Supply Current

(Even In Dropout)

o Thermal-Overload and Short-Circuit Protection

o Reverse Battery Protection

o Output Current Limit

o Preset Output Voltages (±1.4% Accuracy)

o 10nA Logic-Controlled Shutdown

Low-Noise, Low-Dropout,

150mA Linear Regulators in SOT23

________________________________________________________________ Maxim Integrated Products

1

GND

OUT

IN

15

BP

SHDN

MAX8867

MAX8868

SOT23-5

TOP VIEW

2

34

__________________Pin Configuration

19-1302; Rev 3; 7/02

MAX8867

MAX8868

INPUT

2.5V TO 6.5V

IN

OUT

SHDN

0.01

µF

1

µF

1

µF

OFF

ON

BP

GND

OUTPUT

PRESET

2.5V TO 5.0V

150mA

__________Typical Operating Circuit

_________________Ordering Information

**xy is the output voltage code (see Expanded Ordering

Information table at end of data sheet).

PART**

TEMP

RANGE

PIN-PACKAGE

MAX8867EUKxy-T

-40

°C to +85°C SOT23-5 Regular

MAX8867EZKxy-T

-40

°C to +85°C SOT23-5 Thin

MAX8867C/Dxy

0

°C to +70°C Dice*

MAX8868EUKxy-T

-40

°C to +85°C SOT23-5 Regular

MAX8868EZKxy-T

-40

°C to +85°C SOT23-5 Thin

MAX8868C/Dxy

0

°C to +70°C Dice*