Datasheet > CAT3643

CAT3643

更新时间： 2022-10-20 09:23:42

品牌	Logo	应用领域
安森美 - ONSEMI		驱动器
页数	文件大小	规格书
15页	204K
描述
3-Channel Ultra High Efficiency Quad-Mode LED Driver

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CAT3643 数据手册

CAT3643

3-Channel Ultra High

Efficiency Quad-Mode⁾LED

Driver

Description

http://onsemi.com

The CAT3643 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 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 2.4 V to 5.5 V.

TDFN−12

HV2 SUFFIX

CASE 511AN

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

dimming interface for current setting of all LEDs. Six different current

ratios are available via the interface.

TQFN−16

HV3 SUFFIX

CASE 510AD

The device is available in the 16−pad TQFN or 12−pad TDFN 3 mm

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

ON Semiconductor’s Quad−Mode 1.33x charge pump switching

architecture is patented.

MARKING DIAGRAMS

Features

HABF

HABG

• High Efficiency 1.33x Charge Pump

• Quad−mode Charge Pump: 1x, 1.33x, 1.5x, 2x

• Drives up to 3 LEDs at 32 mA Each

• 1−wire EZDimt LED Current Programming

• Power Efficiency up to 92%

CAT3643HV2−T2

CAT3643HV2−GT2

JAAE

JAAF

• Low Noise Input Ripple in All Modes

• “Zero” Current Shutdown Mode

• Soft Start and Current Limiting

CAT3643HV3−T2

CAT3643HV3−GT2

• Short Circuit Protection

ORDERING INFORMATION

• Thermal Shutdown Protection

Device

Package

Shipping

• 12−pad TDFN and 16−pad TQFN Packages

CAT3643HV2−T2

(Note 1)

TDFN−12

(Pb−Free)

2,000/

Tape & Reel

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

Compliant

CAT3643HV2−GT2 TDFN−12

2,000/

(Note 2)

(Pb−Free)

Tape & Reel

Applications

CAT3643HV3−T2

(Note 1)

TQFN−16

(Pb−Free)

2,000/

Tape & Reel

• LCD Display Backlight

• Cellular Phones

• Digital Still Cameras

• Handheld Devices

CAT3643HV3−GT2 TQFN−16

(Note 2)

2,000/

Tape & Reel

(Pb−Free)

1. Matte−Tin Plated Finish (RoHS−compliant).

2. NiPdAu Plated Finish (RoHS−compliant).

Publication Order Number:

May, 2010 − Rev. 6

CAT3643/D

12 3 4 5 6 7...15

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