1

Date: 5/25/04

SPX1521 300mA Low Dropout Voltage Regulator

©Copyright 2004 Sipex Corporation

SPX1521

FEATURES

■ 1% Output Accuracy 3.3V, 5V,

at 300mA Output

■ Very Low Quiescent Current

■ 0.3V (Typ.) Dropout Voltage at 300mA

■ Extremely Tight Load and Line Regulation

■ Current & Thermal Limiting

■ Reverse Battery Protection

■ Equivalent Replacement For LT1521

®

The SPX1521 is a low power voltage regulator. This device is an excellent choice for use in battery-powered

applications such as cordless telephones, radio control systems, and portable computers. The SPX1521

features very low quiescent current and very low dropout voltage. This includes a tight initial tolerance of

±1% max, and very low output temperature coefficient, making the SPX1521 useful as a low-power voltage

reference.

The SPX1521 is offered in 3 pin TO-252, SOT-223, TO-220 & TO-263 packages.

300mA Low Dropout Voltage Regulator

Now Available in Lead Free Packaging

DESCRIPTION

+

2.2µF

+

SPX1521

I

IN

I

G

I

L

5V

IN

OUT

GND

LOAD

I

V

OUT

0.1µF

TYPICAL APPLICATIONS CIRCUIT

12

3

SPX1521

3 Pin TO-263

V

OUT