© Semiconductor Components Industries, LLC, 2010

March, 2010 − Rev. 5

1

Publication Order Number:

CAT3626/D

CAT3626

6-Channel LED Driver with

Description

The CAT3626 is a high efficiency 1x/1.5x fractional charge pump

with programmable dimming current in six LED channels. To ensure

uniform brightness in LCD backlight applications, each LED channel

delivers an accurate regulated current.

Low noise and input ripple is achieved by operating at a constant

switching frequency of 1 MHz which allows the use of small external

ceramic capacitors. The 1x/1.5x fractional charge pump supports a

wide range of input voltages from 3 V to 5.5 V with efficiency up to

91%, and is ideal for Li−Ion battery powered devices.

The LED channels are configured into three independent pairs, each

containing 2 matched channels. Each pair can be separately

programmed from zero to 32 mA, in 0.5 mA resolution steps, using

others remain active. When the enable input (EN) is low, the device is

in shutdown mode drawing zero current.

The device is available in a 16−pad TQFN package with a max

height of 0.8 mm.

Features

Compliant

Applications

http://onsemi.com

TQFN−16

HV4 SUFFIX

CASE 510AE

PIN CONNECTIONS

G626

AXXX

YMCC

MARKING DIAGRAMS

Device

Package

Shipping

ORDERING INFORMATION

CAT3626HV4−T2

(Note 1)

TQFN−16

(Pb−Free)

2,000/

Tape & Reel

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

2. NiPdAu Plated Finish (RoHS−compliant).

LEDC2

GND

C2+

C2−

LEDA1

SDA

SCL

EN

1

(4 x 4 mm) (Top View)

CDAJ

AXXX

YMCC

CAT3626HV4−GT2

(Note 2)

TQFN−16

(Pb−Free)

GND

G626 = CAT3626HV4−T2

CDAJ = CAT3626HV4−GT2

A = Assembly Location

XXX = Last Three Digits of Assembly Lot Number

Y = Production Year (Last Digit)

M = Production Month (1−9, A, B, C)

CC = Country of Origin (Two Digit)