SPX2969 Datasheet, PDF (1/9 Pages) Sipex Corporation – 150mA Low Dropout Voltage Regulator

®
Advanced
SPX2969
150mA Low Dropout Voltage Regulator
FEATURES
■ 5V Fixed Output
■ 150mA current capability
■ 250mV Dropout
I¹
8Q
SI 2
SPX2969
7 SO
■ Programmable Reset Threshold
■ 250µA Quiescent Current
■ Over Temperature Protection
RADJ ₃
D4
8 PIN NSOIC
6 ^RO
5 GND
■ Reverse Polarity Protection
Now Available in Lead Free Packaging
■ 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.
APPLICATIONS
■ Automotive
■ Industrial
■ Wireless Base Station
DESCRIPTION
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
12V
+
1000µF
RS1
RS2
I
Q
SPX2969
RO
RADJ
SO
SI
GND
D
5V
RADJ1 ₊
22µF
0.1µF
RADJ2
Date: 8/4/04
RESET OUT
SPX2969 150mA Low Dropout Voltage Regulator
1
© Copyright 2004 Sipex Corporation