Outline

This IC was developed for use in home-use telephone and small-scale telephone systems, and incorporates data transmission functions (AMI).

Features

1. Incorporates efficient switching regulator with broad input voltage range

VOUT 5V±0.25 IL 250mA (13~45V)

VIN 15~45V

2. Internal data transmission/reception circuits

Data can be superposed on the power supply line for transmission.

AMI format is used for transmission route coding.

3. Internal system reset circuit

5V line abnormal voltage detection circuit

Watchdog timer reset circuit

4. Internal speaker amp

260 mW typ. at 8Ω load

Mute pin

5. Internal beep sound generator circuit

With pin to vary audio volume (also used to turn beep sound on and off)