Datasheet > CAT4004_08

CAT4004_08

更新时间： 2024-11-25 04:11:03

品牌	Logo	应用领域
CATALYST		驱动器
页数	文件大小	规格书
11页	249K
描述
4-Channel Constant Current LED Driver with EZDim⑩

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CAT4004_08 数据手册

CAT4004

4-Channel Constant Current LED Driver with EZDim™

FEATURES

DESCRIPTION

Four LED current sinks with tight matching

Low Dropout Driver 130mV at 30mA

No switching noise

The CAT4004 provides four matched low dropout current

sources to drive LEDs. An external resistor on RSET sets

the current in the LED channels. Each LED channel

includes an individual control loop allowing the device to

handle a wide range of LED forward voltages while still

maintaining tight current matching.

Shutdown current < 1μA

LED current set by external resistor

Dimming via 1-wire EZDim^TMinterface

Thermal shutdown protection

RoHS Compliant

The EN/DIM logic inputs supports device enable and a

digital dimming interface for current setting of all LEDs.

Six different current dimming ratios are available.

8-lead 2mm x 3mm TDFN package

The device is aimed at “direct drive” battery applications.

It is required that the battery or voltage source have

enough headroom to drive the LED forward voltage and

current sink (>150mV).

APPLICATIONS

LCD Display Backlight

Cellular Phones

The device is available in a tiny 8-lead TDFN 2mm x 3mm

package with a max height of 0.8mm.

Digital Still Cameras

Handheld Devices

ORDERING INFORMATION

Quantity Package

For Ordering Information details, see page 10.

Part Number

Package

per Reel

Marking

CAT4004VP2-T3 TDFN-8 ⁽¹⁾

CAT4004VP2-GT3 TDFN-8 ⁽²⁾

3000

Notes: (1) Matte-Tin Plated Finish (RoHS-compliant).

(2) NiPdAu Plated Finish (RoHS-compliant).

PIN CONFIGURATION

TYPICAL APPLICATION CIRCUIT

V_IN

8-lead TDFN Package

2.4V

20mA

(Top View)

C_IN

EN/DIM

GND

VIN

1µF

5.5V

RSET

LED4

LED3

LED1 LED2 LED3 LED4

VIN

CAT4004

LED1

LED2

One wire

programming

CAT4004

EN/DIM

RSET

3.8kΩ

GND

Characteristics subject to change without notice

Doc. No. MD-5024 Rev. B

12 3 4 5 6 7...11

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