Preliminary (Confidential)
MY9263
16-Channel LED Driver With 16-bit Adaptive Pulse Density Modulation
& Error Diagnostics & Power Saving & Global Current Control
MY-Semi
General Description
Features
The MY9263, 16-channel c o n s ta n t c u rr e n t LED driver
with 16-bit grayscale Adaptive Pulse Density Modulation
(APDM), supports error diagnostics, power saving function
and current gain control. 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, 2~35mA/3.3V output current 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
✦
16-bit grayscale resolution with Adaptive Pulse
The device operates over a 3V to 5.5V input voltage range,
[ patent pending ]
[ patent pending ]
Density Modulation control [ patent pending ]
a
fast 30MHz DCK input 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 6-bit global current control. Furthermore,
the MY9263 also supports compulsory error detection.
Under compulsory error detection, the display image will not
be affected since the interval and current are small. Differing
from error mode selections; the specified diagnostic can be
performed. The error will be stored back to the shift register
and could be read out from the DO pin. Moreover, the
threshold voltage for LED short detection can be selected
to comply with different LED string configuration. And the
✦ Non-scramble waveform for high power LED application
✦ Grayscale counter reset selection
✦ Grayscale data synchronization selection
✦
6-bit global current control: from 12.5% to 200%
✦ Compulsory error detection includes LED Open, LED
Short, Output port leakage, Output short-to-GND,
Output short-to-Power and REXT short-to-GND
✦ Compulsory error detection with 0.1mA
✦ Short detection threshold voltage selection (2/3/4/4.5V)
✦ Sleep mode to lower down the supply current to 10uA
✦ Over-temperature warning
sleep mode could efficiently lower down the supply current ✦ 30MHz Clock frequency for data transfer
in power saving applications.
✦
EMI reduction grayscale clock
✦ GCK watchdog
The MY9263 is available in 24-pin SOP/SSOP/TSSOP/
QFN packages and specified over the -40°C to +85°C
ambient temperature range.
✦ 8KV ESD protection on IOUT pins
Applications
Order information
❑ Indoor and Outdoor LED Video Displays
❑ Variable Message Sign (VMS)
Part
Package Information
MY9263SA
SOP24-236mil-1.0mm
2000 pcs/Reel
2500 pcs/Reel
❑ Dot Matrix Module
MY9263SS
MY9263TE
SSOP24-150mil-0.635mm
❑
LCD Display Backlighting
TSSOP24-173mil-0.65mm
(Exposed Pad)
2500 pcs/Reel
3000 pcs/Reel
MY9263QF QFN24-4mmx4mm-0.5mm
Typical Operating Circuits
Pin Configuration
VLED
Power
System
DI
DO
DI
DO
MY9263
MY9263
n
1
Controller
DCK
LAT
GCK
July 2012 Ver. 03
MY-Semi Inc.
0
For pricing, delivery, and ordering information, pleases contact MY-Semi Inc. at +886-3-560-1668,
or email to INFO@MY-Semi.com.tw or visit MY-Semi’s website at www.MY-Semi.com.tw
