Datasheet > EC3211ADJT2R

EC3211ADJT2R

更新时间： 2024-09-14 01:21:47

品牌	Logo	应用领域
飞虹 - E-CMOS		/
页数	文件大小	规格书
16页	1112K
描述
1.5MHz, 1.2A, Synchronous Step-Down Regulator Dropout

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EC3211ADJT2R 数据手册

1.5MHz, 1.2A, Synchronous

Step-Down Regulator Dropout

EC3211

General Description

Features

The EC3211 is a high efficiency monolithic synchronous

buck regulator using a constant frequency, current mode

architecture. The device is available in an adjustable

version . Supply current during operation is only 20mA

and drops to ≤1mA in shutdown. The 2.5V to 5.5V

input voltage range makes the EC3211 ideally suited for

single Li-Ion battery-powered applications. 100% duty

cycle provides low dropout operation, extending battery

life in portable systems. Automatic Burst Mode operation

increases efficiency at light loads, further extending

battery life.

● High Efficiency: Up to 96%

● High Efficiency at light loads

● Very Low Quiescent Current: Max 70uA During

Operation

● 1.2A Output Current

● 2.5V to 5.5V Input Voltage Range

● 1.5MHz Constant Frequency Operation

● No Schottky Diode Required

● Low Dropout Operation: 100% Duty Cycle

● 0.6V Reference Allows Low Output Voltages

● Shutdown Mode Draws ≤1uA Supply Current

● Current Mode Operation for Excellent Line and Load

Transient Response

Switching frequency is internally set at 1.5MHz, allowing

the use of small surface mount inductors and capacitors.

The internal synchronous switch increases efficiency and

eliminates the need for an external Schottky diode. Low

output voltages are easily supported with the 0.6V

feedback reference voltage. The EC3211 is available in

TSOT23-5 package.

● Over-temperature Protected

● TSOT23-5 Package is Available

Applications

●Cellular Telephones

●Personal Information Appliances

●Wireless and DSL Modems

●Digital Still Cameras

●MP3 Players

●Portable Instruments

Package Types

TSOT23•5

Figure 1. Package Types of EC3211

E-CMOS Corp. (www.ecmos.com.tw)

Page 1 of 16

3I12N-Rev.F001

12 3 4 5 6 7...16

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