RT6010

®

DS6010-00 March 2012

www.richtek.com

1

Copyright 2012 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

©

Ordering Information

Note :

Richtek products are :

RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

Suitable for use in SnPb or Pb-free soldering processes.

Dual Channel High Efficiency and High Accuracy Average

Current Control LED Backlight Buck Controller

General Description

The RT6010 is a dual channel high accuracy average current

control LED backlight buck controller for 2 LED strings w/

o LED binning. Dual MOSFET drivers are specifically

designed to drive two power N-MOSFETs in an

asynchronous buck converter topology. The controller

provides variable LED current control by adjusting the CS

resistor value for digital and linear dimming. The controller

to provide high accuracy

±3%. The controller also provides

high efficiency (higher than 95%) under proper setting

to 450V. It is preferred to operate the controller under a

current ripple of < 30% average current and about 85%

duty to optimize the performance.

The RT6010 can be easily connected in series by master/

slave synchronization for multiple channel, even for more

than 6-CH. The controller provides SPD (Smart Phase Shift

Dimming) that is easily implemented to synchronize master

and slave ICs. The controller provides both analog and

PWM dimming.

The RT6010 automatically detects LED bar open, LED

VOUT from over/under voltage damages. The controller

also outputs fault signal with programmable delay to

previous power stage, such as ACDC controller.

Features

Fast Average Current Control T

Current Control)

Dual MOSFET Drives for Asynchronous Buck

Topology

Provide High Efficiency > 95% and High Accuracy

±±±±±3% Channel to Channel Variation

Provide LED w/o Binning

Programmable PWM Constant Off Time

Support both PWM and Analog Dimming

PWM Dimming Duty Down to 1%

UVP for Bar Open/Short to GND with

programmable Fault Delay

Support SPD (Smart Phase Shift Dimming) for

Multiple Channel Dimming Solution

Malfunction

SOP-16 Package

RoHS Compliant and Halogen Free

Applications

LCD TV, MNT Display Backlight

DC/DC or ACDC LEDDriver Application

General Purpose Constant Current Source

LED Signage and Display

Architectural and Decorative LED Lighting

LED Street Lighting

Pin Configurations

(TOP VIEW)

SOP-16

VSS

PWM_OUT

EN

RT_OUT

CS2

GATE2

GATE1

VCC

DIM/PWM_IN

RT

D_OSC

F_DELAY

FAULT

NC

CS1

DPS

6

7

8

4

5

2

3

16

13

15

14

12

9

11

10

Package Type

S :SOP-16

RT6010

Lead Plating System

G : Green (Halogen Free and Pb Free)