Datasheet > CAT4201

CAT4201

更新时间： 2024-11-21 09:14:35

品牌	Logo	应用领域
CATALYST		驱动器
页数	文件大小	规格书
15页	337K
描述
350mA High Efficiency Step Down LED Driver

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CAT4201 数据手册

CAT4201

350mA High Efficiency Step Down LED Driver

FEATURES

DESCRIPTION

LED drive current up to 350mA

The CAT4201 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

350mA from supplies as high as 36V.

Compatible with 12V and 24V standard systems

Handles transients up to 40V

Single Pin Control and Dimming function

Power Efficiency up to 94%

Drives LED strings of up to 32V

The switching architecture of the CAT4201 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 1MHz,

making it ideal for applications requiring small footprint

and low value external inductors.

Open and short LED protection

Parallel configuration for higher output current

RoHS-compliant TSOT-23 5-lead package

APPLICATIONS

12V and 24V Lighting Systems

Automotive and Aircraft Lighting

General lighting

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.

High Brightness 350mA LEDs

ORDERING INFORMATION

Quantity

per Reel

Package

Marking

Part Number

CAT4201TD-GT3

* Plated Finish: NiPdAu

3000

For Ordering Information details, see page 14.

PIN CONFIGURATION

TYPICAL APPLICATION CIRCUIT

Bulb Replacement

VBAT

TSOT-23 5-lead

CTRL

GND

VBAT

4.7µF

CAT4201

VBAT

CAT4201

300mA

10µF

RSET

CTRL

(Top View)

10kΩ

22µH

GND

D: Central Schottky CMDSH05-4

L: Sumida CDRH6D26-220

See Table 1 on page 6 for external component selection.

Characteristics subject to change without notice

Doc. No. MD-5025 Rev. D

12 3 4 5 6 7...15

中文翻译

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