LP2985LV

150mA LOW NOISE, LOW DROPOUT REGULATOR

WITH SHUTDOWN FOR OUTPUT VOLTAGES <2.3 V

SLVS552 − OCTOBER 2004

5

POST OFFICE BOX 655303

functional block diagram

VIN

VOUT

ON/OFF

Over-Current/

Over-Temperature

Protection

VREF

1.23 V

−

+

BYPASS

basic application circuit

VOUT

2.2

µF†

10 nFw

1

µF†

VIN

1

ON/OFF}

† Minimum COUT value for stability (can be increased without limit for improved stability and transient response)

‡ ON/OFF must be actively terminated. Connect to VIN if shutdown feature is not used.

§ Optional BYPASS capacitor for low noise operation

2

GND

3

5

4

BYPASS

LP2985A−xxDBVR