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®
SPX2945
400mA Low Dropout Voltage Regulator with Shutdown
FEATURES
■ Output 3.3V, 5.0V at 400mA Output ■ Very Low Quiescent Current, 100µA ■ Low Dropout Voltage, 420mV at 400mA ■ Extremely Tight Load and Line Regulation ■ Very Low Temperature Coefficient ■ Current & Thermal Limiting ■ Error Flag Warns Of Output Dropout ■ Logic-Controlled Electronic Shutdown ■ Output Programmable From 1.24V to 20V (for SO-8)
VIN IN OUT
ON SHUTDOWN INPUT OFF +VIN 100K 8 +VIN VOUT + 7 R1 0.01µF 10µF 1 1.2V to 20V
SPX2945
3 SD GND 4
FB
______ ERROR
ERROR 5 R2 VREF OUTPUT
Adjustable Regulator
5V
SPX2945
+ 0.1 µF GND + 2.2 µF
5V Regulator Circuit
DESCRIPTION
The SPX2945 is a low power voltage regulator.