ME2179AM6G

General Description

The ME2179 series is a CMOS step-up switching regulator which mainly consists of a reference voltage source, an

 oscillation circuit, an error amplifier, a phase compensation circuit, a timer latch short-circuit protection circuit, a

 PWM / PFM switching control circuit. With an external low-ON-resistance Nch Power MOS, this product is ideal for 

applications requiring high efficiency and a high output current. During light-load, ME2179 Series switches its 

operation to the PFM control by the PWM / PFM switching control circuit in order to prevent efficiency decline due 

to the IC operating current. Ceramic capacitors can be used for output capacitor.

 Features

l Input voltage range: 1.8 V to 5.5 V

l Duty ratio: Built-in PWM/PFM switching control circuit 28% to 85%

l oscillator frequency：1.2MHz

l Reference voltage : 0.6 x (1±2%) V

l Maximum output current: 2.0A typ. (VDD=3V, Vout=5.0V)

l Soft start function: 8ms typ.

l Low current consumption: 70μA typ. at switching off

l Shutdown function: Current consumption 1.0μA max. at shutdown

l External parts: Inductor, diode, capacitor, transistor

l Timer latch short-circuit protection circuit: Selectable with / without short-circuit protection circuit for each product;

l Settable delay time by external capacitor (in the product with short-circuit protection)

l UVLO (under-voltage lockout) function: Selectable with UVLO for each product

Typical Application

l MP3 players, digital audio players

l Digital cameras, GPS, wireless transceiver

l Portable devices

Package

l 6-pin SOT23-6