Datasheet > CAV4201

CAV4201

更新时间： 2024-11-06 01:21:59

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
12页	179K
描述
350 mA High Efficiency Step Down LED Driver

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中文翻译

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CAV4201 数据手册

CAV4201

350 mA High Efficiency

Step Down LED Driver

Description

The CAV4201 is a high efficiency step−down converter optimized

to drive high current LEDs. A patented switching control algorithm

allows highly efficient and accurate LED current regulation. A single

RSET resistor sets the full scale LED string current up to 350 mA from

supplies as high as 36 V.

http://onsemi.com

The switching architecture of the CAV4201 results in extremely low

internal power dissipation allowing the device to be housed in a tiny

package without the need for dedicated heat sinking. The device is

compatible with switching frequencies of up to 1 MHz, making it ideal for

applications requiring small footprint and low value external inductors.

Enable, analog dimming and LED shutdown control is provided via a

single input pin, CTRL. Additional features include overload current

protection and thermal shutdown. The device is available in the low

profile 5−lead thin SOT23 package and is ideal for space constrained

applications.

TSOT−23

TD SUFFIX

CASE 419AE

PIN CONNECTIONS

VBAT

CTRL

GND

RSET

Features

(Top View)

• LED Drive Current up to 350 mA

MARKING DIAGRAMS

• Compatible with 12 V and 24 V Standard Systems

• Handles Transients up to 40 V

• Single Pin Control and Dimming Function

• Power Efficiency up to 94%

TFYM

• Drives LED Strings of up to 32 V

TF = Device Code

Y = Production Year (Last Digit)

M = Production Month: 1−9, A, B, C

• Open and Short LED Protection

• Parallel Configuration for Higher Output Current

• CAV Prefix for Automotive and Other Applications requiring Site

and Change Control

ORDERING INFORMATION

• TSOT−23 5−lead Package

• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS

Compliant

Device

CAV4201TD−GT3

Package

Shipping

TSOT−23

(Pb−Free)

3,000/

Tape & Reel

Applications

* Plated Finish: NiPdAu

• 12 V and 24 V Lighting Systems

VBAT

• Automotive and Aircraft Lighting

9 V

• General Lighting

• High Brightness 350 mA LEDs

4.7 mF

VBAT

CAV4201

CTRL

350 mA

10 mF

Enable /

Analog Dimming

RSET

GND

22 mH

D: ON Semiconductor MBR0540

L: Sumida CDRH6D26−220

See Table 4 and Table 5 for external component selection.

Figure 1. Typical Application Circuit

Publication Order Number:

November, 2011 − Rev. 1

CAV4201/D

12 3 4 5 6 7...12

中文翻译

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