Datasheet > EC4503

EC4503

更新时间： 2024-02-11 00:15:33

品牌	Logo	应用领域
飞虹 - E-CMOS		/
页数	文件大小	规格书
13页	775K
描述
White LED Set-up Converter

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EC4503 数据手册

White LED Set-up Converter

EC4503

General Description

Features

●Wide Input Voltage from 2.7V to 6V

●0.2V Reference Voltage

The EC4503 is a current-mode and fixed frequency

Boost converter with an integrated N-FET to drive

white LEDs.

●Fixed 1.5MHz Switching Frequency

●PWM Brightness Control with Wide Frequency

The series connection allows the LED current to be

identical for uniform brightness. Its low on-resistance

of NFET and low feedback voltage reduce power loss

and achieve high efficiency. Fast switching frequency

(1.5MHz typical) allows using small size inductor and

both of input and output capacitors. An over voltage

protection function, which monitors the output voltage

via OVP pin,stops switching of the IC if the OVP voltage

exceeds the over voltage threshold. An internal soft-start

circuit eliminates the inrush current during start-up.

The EC4503 also integrates under-voltage lockout,

Overtemperature protection, and current limit circuits to

Protect the IC in abnormal conditions.

Range of 100Hz to 100kHz

●

Build‐In Power MOSFET : 0.2

●

Open‐LED Protection

Under‐Voltage Lockout Protection

Over‐Temperature Protection

●

mA Quiescent Current during Shutdown

●SOT

‐

23 6 Packages

‐

● Lead Free and Green Devices Available

●(RoHS Compliant)

Applications

●White LED Display Backlighting

The EC4503 is available in a SOT-23-6 packages.

●

Cell Phone and Smart Phone

PDA, PMP, MP3

Digital Camera

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

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