Mar. 2011 Ver. 0.7

MY-Semi Inc.

0

For pricing, delivery, and ordering information, pleases contact MY-Semi Inc. at +886-3-658-5656,

MY-Semi

MY9262

16-Channel High Accuracy Constant Current LED Driver With

16bits Adaptive Pulse Density Modulation and Power Saving Control

General Description

Features

The MY9262, 16-channel c o n s t a n t c u r r e n t LED driver

with 16bits grayscale Adaptive Pulse Density Modulation

(APDM) and power saving control, supports high quality

LED video display applications. This distinctive APDM

technology abates the non-ideal IOUT distortion due to

non-symmetric transient responses and enhances the

refresh rate by separating efficiently the frame waveform.

The MY9262 features a f a s t 30MHz DCK input, allowing a

wide LED dimming (on/off) range to be implemented. This

4-wire serial interface allows a microcontroller to configure the

output channels using four inputs (DI, DCK, LAT, and GCK)

and a data output (DO). DO allows multiple drivers to be

cascaded and operated together.

The device operates over a 3V to 5.5V input voltage range

and provides 1 6 open-drain constant current sinking outputs

output

is

programmable

by

means

of

an

external

global current control. Furthermore, the MY9262 also

supports the grayscale synchronization by two functions of

counter reset and data synchronization. And the sleep

mode could efficiently lower down the supply current in

power saving applications.

The MY9262 is available in a 24-pin SOP/SSOP/TSSOP/

QFN package and specified over the -40°C to +85°C

ambient temperature range.

✦ 3V ~ 5.5V Operating supply voltage

✦ 2~55mA/5V Constant current output range

✦ 2~35mA/3.3V Constant current output range

✦ 17V Rated output channels for long LED strings

✦ ±1.5% (typ.) LED Current accuracy between channels

✦ ±3% (typ.) LED Current accuracy between chips

✦ ±0.1% Output current regulation capability

✦ 16bits grayscale resolution with Adaptive Pulse

p

n

p

n

d

n

g

✦ Traditional non-scramble waveform for high power

LED applications

✦ Grayscale counter reset selection

✦ Grayscale data synchronization selection

✦ 6bits global current control: from 12.5% to 200%

✦ Sleep mode to lower down the supply current to 0.1uA

✦ 30MHz Clock frequency for data transfer

✦ 30ns fast current transient response

✦ Current setting by one external resister

✦ Schmitt trigger input

✦ Power on reset

✦ -40°C to +85°C Ambient temperature range

Applications

Order information

❑ Indoor and Outdoor LED Video Displays

❑ Variable Message Sign (VMS)

❑ Dot Matrix Module

❑ LCD Display Backlighting

Typical Operating Circuits

Pin Configuration

Part

Package Information

MY9262SA

SOP24-236mil-1.0mm

2000 pcs/Reel

MY9262SS

SSOP24-150mil-0.635mm

2500 pcs/Reel

MY9262TE

TSSOP24-173mil-0.65mm

(Exposed Pad)

2500 pcs/Reel

MY9262QF

QFN24-4mmx4mm-0.5mm

3000 pcs/Reel