SPX1129M3-2.5 データシートの表示（PDF） - Signal Processing Technologies

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SPX1129M3-2.5

500mA Low Dropout Voltage Regulator

Signal Processing Technologies 

SPX1129

500mA Low Dropout Voltage Regulator

(PRELIMINARY INFORMATION)

FEATURES

• 1% Output Accuracy 2.5V, 3.3V, 5V, @ 500mA Output

• Very Low Quiescent Current

• 0.4V Dropout Voltage

• Extremely Tight Load and Line Regulation

• Current & Thermal Limiting

• Logic-Controlled Electronic Shutdown

• Reverse Battery Protection

• Output Programmable From 1.24 To 20V

• Equivalent Replacement For LT1129

APPLICATIONS

• Battery Powered Systems

• Cordless Telephones

• Radio Control Systems

• Portable/Palm Top/Notebook Computers

• Portable Consumer Equipment

• Portable Instrumentation

• Bar Code Scanners

• SMPS Post-Regulator

• Voltage Reference

• Automotive Electronics

PRODUCT DESCRIPTION

The SPX1129 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 SPX1129 features very low quiescent current and very low

dropout voltage of 0.4 volts. This includes a tight initial tolerance of ± 1% max, and very low output temperature coefficient, making

the SPX1129 useful as a low-power voltage reference.

The error flag output feature is used as power-on reset for warning of a low output voltage, due to falling voltage input of batteries.

The SPX1129 is offered TO-92, SOT-223, TO-220, TO-252 and TO-263 in 3 & 5 leads.

SOT-223 (M3)

SPX1129

1 23

VIN GND VOUT

Top View

SHDN

V OUT

<0.25V OFF

>2.8V ON

NC ON

TO-263-3 (T)

SPX1129

1 23

VOUT GND VIN

Top View

PIN CONNECTIONS

TO-263-5 (T)

TO-220-3 (U)

SPX1129

12 34 5

1) OUTPUT

2) SENSE/ ADJ

3) GND

4) SHDN

4) VIN

SPX1129

1 23

Top View

VOUT GND VIN

Front View

TO-252 (R)

3

2

1

Front View

VIN

GND

VOUT

VIN

TO-92 (N)

1 23

GND

Bottom View

VOUT

Rev. 10/25/00

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