ACE721E

1A, 1.5MHz Step-Down Converter

VER 1.3

1

Description

The ACE721E is a high-efficiency, DC-to-DC step-down switching regulator, capable of delivering up to

1A of output current. The devices operate from an input voltage range of 2.6V to 5.5V and provide output

voltages from 0.6V to VIN, making the ACE721E ideal for low voltage power conversions.

Running at a

fixed frequency of 1.5MHz allows the use of small inductance value and low DCR inductors, thereby

achieving higher efficiencies. Other external components, such as ceramic input and output caps, can

also be small due to higher switching frequency, while maintaining exceptional low noise output voltages.

Built-in EMI reduction circuitry makes this converter ideal power supply for RF applications. Internal

soft-start control circuitry reduces inrush current. Short-circuit and thermal-overload protection improves

design reliability.

Features

Application

Absolute Maximum Rating

Parameter

Value

IN, SW, FB, EN Voltage

-0.3V~6.5V

SW to ground current

Internally limited

Maximum Power Dissipation

400mW

Operating Temperature Range

-40°C~85°C

Storage Temperature Range

-55°C~150°C

Thermal Resistance

SOT23-5

400mW

DFN2x2x6L

606mW

Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability.