ME3103 Converter Datasheet pdf - DC-DC Converter. Equivalent, Catalog

ME3103

1A Step-Down DC-DC Converter ME3103

General Description

The ME3103 is a step-down current-mode, DC-DC

converter. At heavy load, the constant-frequency PWM

control performs excellent stability and transient

response. To ensure the longest battery life in portable

applications, the ME3103 provides a power-saving

pulse -Skipping Modulation (PSM) mode to reduce

quiescent current under light load operation to save

power.

The ME3103 supports a range of input voltages from

2.5V to 5.5V, allowing the use of a single

Li+/Li-polymer cell, multiple Alkaline/NiMH cell, USB,

and other standard power sources. The output voltage

is adjustable from 0.6V to the input voltage, while the

part number suffix ME3103 indicates pre-set output

voltage of 3.3V, 2.8V, 2.5V, 1.8V, 1.5V, 1.2V or

adjustable. All versions employ internal power switch

and synchronous rectifier for to minimize external part

count and realize high efficiency. During shutdown, the

input is disconnected from the output and the

shutdown current is less than 0.1μA. Other key

features include under-voltage lockout to prevent deep

battery discharge.

Features

● Efficiency up to 96%

● Only 40μA (TYP.) Quiescent Current

● Output Current: Up to 1A

● Internal Synchronous Rectifier

● 1.5MHz Switching Frequency

● Soft Start

● Under-Voltage Lockout

● Short Circuit Protection

● Thermal Shutdown

Applications

● Cellular Phone

● Portable Electronics

● Wireless Devices

● Cordless Phone

● Computer Peripherals

● Battery Powered Widgets

● Electronic Scales

● Digital Frame

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DC-DC Converter. ME3103 Datasheet