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Date: 8/4/04

SPX2969 150mA Low Dropout Voltage Regulator

© Copyright 2004 Sipex Corporation

150mA Low Dropout Voltage Regulator

SPX2969

DESCRIPTION

FEATURES

■ 5V Fixed Output

■ 150mA current capability

■ 250mV Dropout

■ Programmable Reset Threshold

■ 250µA Quiescent Current

■ Over Temperature Protection

■ Reverse Polarity Protection

■ Integrated Pull Up Resistor on Logic Outputs

■ -40° to 125°C Operating Range

■ Available in 8 Pin and 14 Pin nSOIC or 20

Pin wSOIC packages.

®

Sipex’s SPX2969 is a low dropout linear regulator with integrated PNP pass transistor. The part

is designed for automotive environment, and thus can withstand up to 45V and 125°C

temperature range. The output voltage is set at a fixed 5V, and the part is guaranteed to deliver

at least 150mA. The SPX2969 provides multiple protection mechanisms, including over-

temperature and over-current conditions. The part has a built-in reset circuit to monitor when the

output voltage is below 4.65V. The reset voltage threshold can be programmed down to 3.5V

using an external resistor voltage divider, while the reset timing can be programmed via an

external capacitor. A built in comparator compares the signal of the pin SI, normally fed by a

voltage divider from the input voltage, with the reference and gives an early warning on the pin

SO. Both the sense output and the reset output delay signals contain integrated 20kOhm pull up

resistors. The part is available in three package types: 8 Pin and 14 Pin nSOIC or 20 Pin wSOIC

packages.

TYPICAL APPLICATION CIRCUIT

Advanced

GND

I

Q

SO

D

SI

12V

RO

5V

SPX2969

RADJ2

RADJ1 +

+

22µF

1000µF

RS1

RS2

0.1µF

RESET OUT

RADJ

APPLICATIONS

■ Automotive

■ Industrial

■ Wireless Base Station

1

2

3

4

5

6

7

8

I

SPX2969

8 PIN NSOIC

GND

SI

SO

RO

D

Q

RADJ

Now Available in Lead Free Packaging