Datasheet > CAT3647

CAT3647

更新时间： 2024-09-17 04:35:43

品牌	Logo	应用领域
CATALYST		驱动器
页数	文件大小	规格书
14页	298K
描述
3-Channel Ultra High Efficiency Quad-Mode⑩ LED Driver with 32 Dimming Levels

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CAT3647 数据手册

CAT3647

3-Channel Ultra High Efficiency Quad-Mode™

LED Driver with 32 Dimming Levels

DESCRIPTION

FEATURES

High efficiency 1.33x charge pump

Quad-mode charge pump: 1x, 1.33x, 1.5x, 2x

Drives up to 3 LEDs at 30mA each

1-wire EZDim™ 32 linear steps

Power efficiency up to 92%

The CAT3647 is a high efficiency quad-mode

fractional charge pump that can drive up to three

LEDs programmable by a one wire digital interface.

The inclusion of a 1.33x fractional charge pump mode

increases device efficiency by up to 10% over

traditional 1.5x charge pumps with no added external

capacitors.

Low noise input ripple in all modes

“Zero” current shutdown mode

Soft start and current limiting

Short circuit protection

Low noise input ripple is achieved by operating at a

constant switching frequency which allows the use of

small external ceramic capacitors. The multi-fractional

charge pump supports a wide range of input voltages

from 2.4V to 5.5V.

Thermal shutdown protection

RoHS-compliant 16-pad TQFN package

APPLICATION

LCD Display Backlight

The EN/DIM logic input functions as a chip enable and

a digital dimming interface for setting the current in all

the LED channels. The 1-wire pulse-dimming interface

supports 32 linear steps from full-scale down to zero

current.

Cellular Phones

Digital Still Cameras

Handheld Devices

The device is available in the tiny 16-pad TQFN 3mm

x 3mm package with a max height of 0.8mm.

ORDERING INFORMATION

Part Number

Package

Marking

Catalyst Semiconductor’s Quad-Mode™ 1.33x,

charge pump switching architecture is patented.

TQFN-16

CAT3647HV3-GT2

JAAP

3mm x 3mm⁽¹⁾

Notes:

(1) NiPdAu Plated Finish (RoHS-compliant)

(2) Quantity per reel is 2000

PIN CONFIGURATION

TYPICAL APPLICATION CIRCUIT

(Top View)

1µF

C1+

VIN

C1- C2+

C2-

16 15 14 13

OUT

VOUT

LED2

LED3

12 C2-

11 C2+

10 C1-

OUT

2.4V

5.5V

1µF

CAT3647

1-Wire

EZDim^TM

EN/DIM

RSET

LED1

LED2

LED3

Programming

20mA

RSET

9 C1+

3.74kΩ

GND

Characteristics subject to change without notice

Doc. No. MD-5030 Rev. A

12 3 4 5 6 7...14

中文翻译

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与CAT3647相关器件

型号	品牌	获取价格	描述	数据表
CAT3647HV3-GT2	ONSEMI	获取价格	3-Channel Ultra High Efficiency Quad-Mode LED Driver with 32 Dimming Levels
CAT3647HV3-GT2	CATALYST	获取价格	3-Channel Ultra High Efficiency Quad-Mode⑩ LE
CAT3648	CATALYST	获取价格	4-Channel Ultra High Efficiency Quad-Mode⑩ LE
CAT3648	ONSEMI	获取价格	4-Channel Ultra High Efficiency Quad-Mode LED Driver with 32 Dimming Levels
CAT3648HV3-GT2	ONSEMI	获取价格	4-Channel Ultra High Efficiency Quad-Mode LED Driver with 32 Dimming Levels
CAT3648HV3-GT2	CATALYST	获取价格	4-Channel Ultra High Efficiency Quad-Mode⑩ LE
CAT3649	ONSEMI	获取价格	6-Channel Quad-Mode LED Driver with 32 Dimming Levels & PWM
CAT3649_14	ONSEMI	获取价格	6-Channel LED Driver with 32 Dimming Levels & PWM
CAT3649HV3-GT2	ONSEMI	获取价格	6-Channel LED Driver with 32 Dimming Levels & PWM
CAT3661	ONSEMI	获取价格	1-Channel Low-Power LED Driver