MITSMI MM1448 Datasheet

MITSUMI

Composite Regulator MM1448

Composite Regulator

Monolithic IC MM1448

Outline

This IC was developed as a composite power supply for the RF section of mobile telephones. It is composed
of three normal voltage regulator circuits, of which the output of one circuit is divided for two switching
circuits.
The regulator output voltage is fixed, and each can be set between 2.0V and 5.0V according to the
customer's needs. Output noise voltage noise reduction is made possible by using the noise reduction pin.
Also, switch pins are provided to control each output, making this an ideal IC for use in portable equipment.

Features

1. Input/output voltage difference Vo1 : 0.2V max. Vo2 : 0.2V max. Vo3 : 0.3V max.

2. Output noise voltage Vo1 : 30µVrms typ. Vo2 : 30µVrms typ. Vo3 : 30µVrms typ.

3. Output voltage precision Vo1, Vo2, Vo3 : ±3%

4. No-load input current Vo1 : 170µA typ. Vo2 : 170µA typ. Vo3 : 170µA typ.

5. Input voltage 12V max.

6. Output current

7. Output ON/OFF control High : ON, Low : OFF

Package

VSOP-16

Applications

Pin Assignment

1. Mobile telephones, PHS

2. Video cameras

3. Portable communication equipment

4. Battery-powered portable equipment

VSOP-16

13 762458

16 13 1115 14 12910

MITSUMI

1 VO1 9 VO2

2 NS1 10 GND

3 PS1 11 PS4

4 V

IN 12 VO4

5 PS3 13 NC

6 NS3 14 V

O5

7 PS2 15 PS5

8 NS2 16 V

O3

MITSUMI

Composite Regulator MM1448

MITSUMI

Equivalent Circuit Diagram

Absolute Maximum Ratings

Item Symbol Rating Unit

Storage Temperature T

STG

-

40~+125 °C

Operating Temperature T

OPR

-

20~+75 °C

Power Supply Voltage V

IN

-

0.3~+12 V

Output Current (1 circuit) I

O (n) 200 mA

Power Consumption Pd 400 (IC only) mW

Recommended Operating Conditions

Item Symbol Rating Unit

Operating Temperature T

OP

-

20~75 °C

Operating Voltage V

OP 1.8~12 V

Regulator Output Current (1 circuit)

IO (n) 0~100 mA