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MM1458

Regulator+Reset IC

Mitsumi 

MITSUMI

Regulator+Reset IC

Monolithic IC MM1458

Regulator+Reset IC MM1458

Outline

This IC, developed for use in CD-ROM drives, combines a 3V regulator adapted to low power consumption

with a much-sought reset function (regulator input monitoring), with internal delay circuit, set to detect 4.2V.

Features

1. Large output current

300mA max.

2. High ripple rejection rate

80dB typ.

3. Internal thermal shutdown circuit.

4. Internal current-limiting circuit.

5. Adjustment-free reset detection voltage

4.2V typ.

6. Easy to set delay time from voltage detection to reset release.

Package

SOP-7

Applications

CD-ROM drive.

Pin Assignment

7

6

5

1234

SOP-7

1

GND

---------------------------------------------------------------------

2

RESET

3

CONT

4

VIN

5

VOUT

6

GND

7

cd

Equivalent Circuit Diagram

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