NJM2845/46

-1-

Ver.2005-01-20

LOW DROPOUT VOLTAGE REGULATOR

GENERAL DESCRIPTION

PACKAGE OUTLINE

The NJM2845 is low dropout voltage regulator. Advanced

Bipolar technology achieves low noise, high ripple rejection

and low quiescent current.

NJM2845 is 3 terminal type and NJM2846 is ON/OFF control

built in type. These product can be selected according to the

applications.

FEATURES

High Ripple Rejection

75dB typ. (f=1kHz,3V Version)

Output Noise Voltage

Vno=45

µVrms typ. (Vo=3V Version)

Output capacitor with 2.2

µF ceramic capacitor (Vo≥2.6V)

Output Current

Io(max.)=800mA

High Precision Output

Vo

±1.0%

Low Dropout Voltage

0.18V typ. (Io=500mA)

ON/OFF Control

(NJM2846)

Internal Short Circuit Current Limit

Internal Thermal Overload Protection

Bipolar Technology

Package Outline

TO-252-3 (NJM2845DL1), TO-252-5 (NJM2846DL3)

PIN CONFIGURATION

NJM2845DL1

NJM2846DL3

EQUIVALENT CIRCUIT

Thermal

Protection

Bandgap

Reference

GND

Thermal

Protection

Bandgap

Reference

Control

GND

2.GND

3

1

2

1.CONTROL

3.GND

4.Vo

5.NC

NJM2845DL1

NJM2846DL3

NJM2845DL1

NJM2846DL3

1 2 3 4 5

3