Datasheet > CAT3647

CAT3647

更新时间： 2022-03-04 07:28:52

品牌	Logo	应用领域
安森美 - ONSEMI		驱动器
页数	文件大小	规格书
14页	199K
描述
3-Channel Ultra High Efficiency Quad-Mode LED Driver with 32 Dimming Levels

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CAT3647

3-Channel Ultra High

Efficiency Quad-Mode⁾LED

Driver with 32 Dimming

Levels

http://onsemi.com

Description

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 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.

TQFN−16

HV3 SUFFIX

CASE 510AD

PIN CONNECTIONS

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.

C2−

C2+

C1−

C1+

LED2

LED3

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

package with a max height of 0.8 mm.

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

RSET

architecture is patented.

Features

• High Efficiency 1.33x Charge Pump

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

• Drives up to 3 LEDs at 30 mA Each

• 1−wire EZDimt 32 Linear Steps

• Power Efficiency up to 92%

(Top View)

MARKING DIAGRAM

• Low Noise Input Ripple in All Modes

• “Zero” Current Shutdown Mode

• Soft Start and Current Limiting

• Short Circuit Protection

JAAP

AXXX

YWW

JAAP = CAT3647HV3−GT2

A = Assembly Location

XXX = Last Three Digits of Assembly Lot Number

Y = Production Year (Last Digit)

WW = Production Week (Two Digits)

• Thermal Shutdown Protection

• 16−pad TQFN Package

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

Compliant

ORDERING INFORMATION

Applications

Device

Package

Shipping

• LCD Display Backlight

• Cellular Phones

• Digital Still Cameras

• Handheld Devices

TQFN−16

(Pb−Free)

2,000/

Tape & Reel

CAT3647HV3−GT2

(Note 1)

1. NiPdAu Plated Finish (RoHS−compliant).

Semiconductor Components Industries, LLC, 2010

Publication Order Number:

CAT3647/D

May, 2010 − Rev. 2

12 3 4 5 6 7...14

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CAT3647HV3-GT2	ONSEMI	3-Channel Ultra High Efficiency Quad-Mode LED Driver with 32 Dimming Levels	获取价格
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CAT3648	ONSEMI	4-Channel Ultra High Efficiency Quad-Mode LED Driver with 32 Dimming Levels	获取价格
CAT3648HV3-GT2	ONSEMI	4-Channel Ultra High Efficiency Quad-Mode LED Driver with 32 Dimming Levels	获取价格
CAT3648HV3-GT2	CATALYST	4-Channel Ultra High Efficiency Quad-Mode⑩ LE	获取价格