MM1481 查看數據表（PDF） - Mitsumi

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MM1481

Regulator+Reset IC

Mitsumi 

MITSUMI

Regulator+Reset IC

Monolithic IC MM1481

Regulator+Reset IC MM1481

Outline

This IC was developed for use in CD-ROM drives and other optical disc drives. It combines two 3V system

regulator lines and reset (monitors regulator input) with a built-in 4.2V detection delay circuit that responds to

market needs.

Features

1. Large output current

300mA max.

2. High ripple rejection rate

regulator1: 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.

regulator2: 60dB typ.

Package

VSOP-8A

Applications

1. CD-ROM drive

2. Optical disc drives

Pin Assignment

8765

1234

VSOP-8A

(TOP VIEW)

1

Cd

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

2

RESET

3

Vdet

4

VIN

5

VOUT1

6

VOUT2

7

GND

8

CONT

Equivalent Circuit Diagram

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