CAV4201TD-GT3【PDF 1/12 页】IC LED DVR 350MA STP-DN TSOT23-5

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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.

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

http://onsemi.com

TSOT ? 23

TD SUFFIX

CASE 419AE

PIN CONNECTIONS

CTRL VBAT

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

applications.

GND

RSET

Features

? LED Drive Current up to 350 mA

? 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%

? Drives LED Strings of up to 32 V

? Open and Short LED Protection

? Parallel Configuration for Higher Output Current

? CAV Prefix for Automotive and Other Applications requiring Site

and Change Control

? TSOT ? 23 5 ? lead Package

? These Devices are Pb ? Free, Halogen Free/BFR Free and are RoHS

Compliant

(Top View)

MARKING DIAGRAMS

TFYM

TF = Device Code

Y = Production Year (Last Digit)

M = Production Month: 1 ? 9, A, B, C

ORDERING INFORMATION

Device Package Shipping

CAV4201TD ? GT3 TSOT ? 23 3,000/

(Pb ? Free) Tape & Reel

Applications

? 12 V and 24 V Lighting Systems

? Automotive and Aircraft Lighting

? General Lighting

? High Brightness 350 mA LEDs

VBAT

9V C1

4.7 m F

Enable /

Analog Dimming

* Plated Finish: NiPdAu

VBAT

CAV4201

CTRL

10 m F

350 mA

RSET

GND

22 m H

D: ON Semiconductor MBR0540

L: Sumida CDRH6D26 ? 220

See Table 4 and Table 5 for external component selection.

Figure 1. Typical Application Circuit

? Semiconductor Components Industries, LLC, 2011

November, 2011 ? Rev. 1

Publication Order Number:

CAV4201/D

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