MY9262
16-Channel High Accuracy Constant Current LED Driver With
16bits Adaptive Pulse Density Modulation and Power Saving Control
MY-Semi
General Description
Features
The MY9262, 16-channel c o n s ta n t c u rr 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.
✦ 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
The MY9262 features a fast 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)
✦
16bits grayscale resolution with Adaptive Pulse
[ patent pending ]
[ patent pending ]
Density Modulation control [ patent pending ]
✦ Traditional non-scramble waveform for high power
LED applications
and
a data output (DO). DO allows multiple drivers to be
cascaded and operated together.
✦ Grayscale counter reset selection
✦ Grayscale data synchronization selection
The device operates over a 3V to 5.5V input voltage range
and provides 16 open-drain constant current sinking outputs
that are rated to 1 7 V and delivers up to 55mA of high
accuracy current to each string of LED. The current at each
output is programmable by means of an external
current-sensing resistor and could be adjusted by 6bits
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.
✦
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
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.
Applications
Order information
❑ Indoor and Outdoor LED Video Displays
❑ Variable Message Sign (VMS)
Part
Package Information
MY9262SA
SOP24-236mil-1.0mm
2000 pcs/Reel
2500 pcs/Reel
❑ Dot Matrix Module
MY9262SS
MY9262TE
SSOP24-150mil-0.635mm
❑
LCD Display Backlighting
TSSOP24-173mil-0.65mm
(Exposed Pad)
2500 pcs/Reel
3000 pcs/Reel
MY9262QF QFN24-4mmx4mm-0.5mm
Typical Operating Circuits
Pin Configuration
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,
or email to INFO@MY-Semi.com.tw or visit MY-Semi’s website at www.MY-Semi.com.tw
