Datasheet > CAT4109

CAT4109

更新时间： 2022-03-04 00:44:10

品牌	Logo	应用领域
安森美 - ONSEMI		驱动器
页数	文件大小	规格书
12页	153K
描述
3-Channel Constant-Current RGB LED Driver with Individual PWM Dimming

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CAT4109 数据手册

CAT4109

3-Channel Constant-Current

RGB LED Driver with

Individual PWM Dimming

Description

http://onsemi.com

The CAT4109 is a 3−channel constant−current LED driver,

requiring no inductor. LED channel currents up to 175 mA are

programmed independently via separate external resistors. Low output

voltage operation of 0.4 V at 175 mA allows for more power efficient

designs across wider supply voltage range. The three LED pins are

compatible with high voltage up to 25 V supporting applications with

long strings of LEDs.

Three independent control inputs PWM1, PWM2, PWM3, control

respectively LED1, LED2, LED3 channels. The device also includes

an output enable (OE) control pin to disable all three channels

independently of the PWMx input states.

SOIC−16

V SUFFIX

CASE 751BG

PIN CONNECTIONS

Thermal shutdown protection is incorporated in the device to

disable the LED outputs whenever the die temperature exceeds 150°C.

The device is available in a 16−lead SOIC package.

VDD

PGND

GND

PWM3

PWM2

PWM1

RSET3

RSET2

RSET1

Features

• 3 Independent Current Sinks up to 175 mA rated 25 V

• LED Current Set by External Low Power Control Resistors

• Individual PWM Control per Channel

• Low Dropout Current Source (0.4 V at 175 mA)

• Output Enable Input for Dimming

• “Zero” Current Shutdown Mode

• 3 V to 5.5 V Logic Supply

LED1

LED2

LED3

(Top View)

MARKING DIAGRAM

• Thermal Shutdown Protection

• 16−lead SOIC Package

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

L4A

CAT4109VB

YMXXXX

Compliant

Application

• Multi−color LED, Architectural Lighting

• LED Signs and Displays

• LCD Backlight

L = Assembly Location

4 = Lead Finish − NiPdAu

A = Product Revision (Fixed as “A”)

CAT4109V = Device Code

B = Leave Blank

Y = Production Year (Last Digit)

M = Production Month (1−9, A, B, C)

XXXX = Last Four Digits of Assembly Lot Number

ORDERING INFORMATION

Device

Package

Shipping

CAT4109V−GT2

(Note 1)

SOIC−16

(Pb−Free)

2,000/

Tape & Reel

1. Lead Finish NiPdAu

Publication Order Number:

March, 2010 − Rev. 2

CAT4109/D

12 3 4 5 6 7...12

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