CAT4101TV-T75(2010) データシートの表示（PDF） - ON Semiconductor

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CAT4101TV-T75
(Rev.:2010)

1 A Constant-Current LED Driver with PWM Dimming

ON Semiconductor 

CAT4101

1 A Constant-Current LED

Driver with PWM Dimming

Description

The CAT4101 is a constant−current sink driving a string of

high−brightness LEDs up to 1 A with very low dropout of 0.5 V at full

load. It requires no inductor, provides a low noise operation and

minimizes the number of components. The LED current is set by an

external resistor connected to the RSET pin. The LED pin is

compatible with high voltage up to 25 V, allowing the driving of long

strings of LEDs. The device ensures an accurate and regulated current

in the LEDs independent of supply and LED forward voltage

variation.

The PWM/EN input allows the device shutdown and the LED

brightness adjustment by using an external pulse width modulation

(PWM) signal.

The driver features a thermal shutdown protection that becomes

active whenever the die temperature exceeds 150°C.

The device is available in a high−power, 5−lead TO−263 package

offering excellent thermal dissipation characteristics.

Features

• Accurate 1 A Current Sink

• Up to 25 V Operation on LED Pin

• Low Dropout 500 mV at 1 A

• LED Current Set by External Resistor

• High Resolution PWM Dimming via EN/PWM

• “Zero” Current Shutdown Mode

• Thermal Shutdown Protection

• TO−263 5−lead Package

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

Compliant

Applications

• High Power LED up to 1 A

• Architectural and General Lighting

• Automotive Lighting

VCC

3 V to 25 V

LEDs

1A

VIN

5V

VIN

CAT4101

OFF ON

EN/PWM LED

549 W

RSET

GND

Figure 1. Typical Application Circuit

http://onsemi.com

TO−263

TV SUFFIX

CASE 221AE

PIN CONNECTIONS

1

EN/PWM

VIN

GND

TAB

RSET

LED

(Top View)

MARKING DIAGRAM

CAT4101TV

3LYMXXXXA

CAT4101TV = Specific Device Code

3 = Lead Finish (Matte−Tin)

L = Assembly Location Code

Y = Production Year (Last Digit)

M = Production Month (1−9, A, B, C)

XXXX = Last Four Digits of Assembly Lot Number

A = Production Revision (Fixed as “A”)

ORDERING INFORMATION

Device

CAT4101TV−T75

(Note 1)

Package

TO−263

(Pb−Free)

Shipping

750/

Tape & Reel

1. Lead Finish Matte−Tin

© Semiconductor Components Industries, LLC, 2010

1

February, 2010 − Rev. 4

Publication Order Number:

CAT4101/D

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