Rev. 10/24/00

SPX5205

150 mA, Low-Noise LDO Voltage Regulator

(Preliminary Information)

FEATURES

APPLICATIONS

•

Low Noise Output LDO

•

PDA

•

1% Initial Accuracy At 150mA

•

Battery Powered Systems

•

Very Low Quiescent Current

•

Cellular Phone

•

Low Dropout Voltage (210mV At 150mA)

•

Cordless Telephones

•

Current & Thermal Limiting

•

Radio Control Systems

•

Reverse-Battery Protection

•

Portable/Palm Top/Notebook Computers

•

Wide Range of Fix Output Voltages

•

Portable Consumer Equipment

1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.0V, 4.5V, & 5.0V

•

Portable Instrumentation

•

Zero Off-Mode Current

•

Bar Code Scanners

•

Small 5-Pin SOT-23

•

Pin Compatible to MIC5205/MAX8877 (Fixed Option Only)

•

SMPS Post-Regulator

PRODUCT DESCRIPTION

The SPX5205 is an excellent choice for use in battery-powered applications, and where power conservation is desired. Such as:

cellular/ cordless telephones, radio control systems, and portable computers.

This device is a positive voltage regulator with very low dropout voltage and low output noise. It uses very little quiescent current of

750

voltages, as listed below, or an adjustable version are available in a small 5-pin SOT-23 package.

Other key features include: Zero off-mode current, protection against reversed battery, thermal and current limiting.

MARKING INFORMATION

Voltage

Marking

Voltage

Marking

1.8

R1XX

4.0

R7XX

2.5

R2XX

4.5

R8XX

2.8

R3XX

3.0

R5XX

5.0

RBXX

3.3

R6XX

ADJ

RCXX

PIN CONNECTIONS

3

2

1

Fixed Output Voltage

SPX5205

54

3

2

1

Top View

SPX5205

54

BYP

V

OUT

ADJ/BYP

V

OUT

EN

EN

GND

GND

V

IN

V

IN

Top View

Adjustable Output Voltage

SPX5205