Datasheet > UM3510DA

UM3510DA

更新时间： 2024-02-08 07:48:50

品牌	Logo	应用领域
英联电子 - UNIONSEMI		/
页数	文件大小	规格书
13页	585K
描述
1A, 2.25MHz, Synchronous Step-Down DC-DC Converter

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UM3510DA 数据手册

UM3510

1A, 2.25MHz, Synchronous Step-Down DC-DC Converter

UM3510S SOT23-6

UM3510DA DFN6 2.0×2.0

General Description

The UM3510 is a high efficiency pulse-width-modulated (PWM) synchronous step-down DC-DC

converter with an input voltage range of 2.5V to 6.0V. It provides up to 1000mA output current

from a single Li-ion cell. The UM3510 operates at 2.25MHz fixed switching frequency and enters

Power Save Mode to maintain high efficiency at light load condition.

For low noise applications, the device can be forced into fixed frequency PWM mode by pulling

the MODE pin high.

The UM3510 enters shutdown mode and consumes less than 1μA when EN pin is pulled low.

Other features include lower internal reference voltage with 2% accuracy, over temperature

protection and over current protection.

The UM3510 is available in SOT23-6 and 2mm×2mm 6-pin DFN packages.

Applications

Features



Cellular and Smart Phones

Microprocessors and DSP Core

Supplies

Wireless and DSL Modems

PDAs, GPS

WLAN



High Efficiency: Up to 95%

2.25MHz Constant Switching Frequency

1000mA Output Current

Integrated Main Switch and Synchronous

Rectifier. No Schottky Diode Required.

2.5V to 6.0V Input Voltage Range

Low Quiescent Current: 56µA

Thermal Fault Protection



Portable Instruments

<1µA Shutdown Current

Typical Application Circuit

V_OUT1.8V,

1000mA

2.2µH

V_IN2.5V to 6V

V_IN

360kΩ

C_IN

10µF

22pF

C_OUT

10µF

UM3510

GND

180kΩ

MODE

Pin Configurations

Top View

MODE

UCB

VIN

GND

M: Month Code

UM3510S

SOT23-6

________________________________________________________________________

http://www.union-ic.com Rev.01 Jan.2016 1/13

12 3 4 5 6 7...13

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