MM1548 Datasheet (Mitsumishi) - Secondary Control For Energy-saving ac Adaptor

MM1548, Secondary Control For Energy-saving ac Adaptor

Pin No.

1 Pin Name OUT Output (+) pin.

Connect Registor for load detection between VCC pin, and connect collector of PNP power transistor.

1 V CC Function Internal equivalent circuit 2 CNT PNP power transistor control pin.

Connect base of PNP power transistor.

2 3 VCC (+) power supply pin.

( DataSheet : www.DataSheet4U.com ) MITSUMI Secondary Control for Energy-Saving AC Adaptor MM1548 Secondary Control for Energy-Saving AC Adaptor Monolithic IC MM1548 Outline This IC is secondary control on AC adaptors that have energy-saving mode.

The energy-saving mode function operates when charging is completed or when the set is unplugged, thus greatly reducing AC adaptor power consumption.

When a set is connected, normal mode automatically starts and charging starts.

Compared to the con

MM1548 Features

* 1. Automatic switching between energy-saving mode and normal mode 2. Current consumption (energy-saving mode) 60µA 3. Current consumption (normal mode) 1.5mA 4. Uses one photocoupler to control oscillator primary side. 5. One photocoupler is used to control rated voltage and rated current and switch