Datasheet > EC3217

EC3217

更新时间： 2024-11-02 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	710K
描述
1.5MHz, 2A, Synchronous Step-Down Regulator Dropout

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EC3217 数据手册

1.5MHz, 2A, Synchronous

Step-Down Regulator Dropout

EC3217

GENERAL DESCRIPTION

FEATURES

The EC3217 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 EC3217 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. 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 EC3217 is available in TSOT23-5

package.

● High Efficiency: Up to 96%

● High Efficiency at light loads

● Very Low Quiescent Current: typ. 30uA During

Operation

● 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

● 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 EC3217

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

Page 1 of 16

5F05N-Rev.F005

12 3 4 5 6 7...16

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