Document
AiT Semiconductor Inc.
www.ait-ic.com
AD5026
LED DISPLAY DRIVER 16-BIT CONSTANT-CURRENT LED DRIVER
DESCRIPTION
AD5026 is a 16-channel, constant current sink LED driver. It contains High-precision current-drive circuit, 16-bit shift register, Latch and temperature compensation circuit.
AD5026 provides users with great flexibility and device performance in their system design for LED display applications, e.g. LED panels.
AD5026 have the ability of the anti-static technology and anti-jamming technology. It can make chip data transmission more stable and work more reliable. Chip antistatic ability up to more than 4KV.
The AD5026 is available in SSOP24(0.635/1.0) & QFN24 (4X4) Packages.
APPLICATION
Outdoor LED Video Display Indoor LED Video Display Message Signs
TYPICAL APPLICATION
FEATURES
Output constant current: 2~90mA VDS ≧ 300mV (IOUT=20mA) Red light min input voltage: 2.3~2.5V Blue & Green light min input voltage: 3.6~3.8V Constant Current Accuracy:
Channel-to-Channel<±2% Device-to-Device<±3% 25MHz clock frequency Operating voltage range: 3.3V~5V Anti-static damage ability:>4KV Operating Temperature Range: -40℃~+85℃ Available in SSOP24 (0.635/1.0) & QFN24 (4X4) Packages.
ORDERING INFORMATION
Package Type
Part Number
SSOP24
MX24
AD5026MX24R-Z AD5026MX24VR-Z
QFN24
Q24 AD5026Q24R AD5026Q24VR
Note
V: Halogen free Package R: Tape & Reel Z: Dimension Selection
A type: 0.635 B type: 1.0 See package information
AiT provides all RoHS products Suffix “ V” means Halogen free Package
REV1.3 -MAY 2010 RELEASED, AUG 2012 UPDATED –
-1-
AiT Semiconductor Inc.
www.ait-ic.com
PIN DESCTIPTION
AD5026
LED DISPLAY DRIVER 16-BIT CONSTANT-CURRENT LED DRIVER
Pin #
SSOP24
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3
Top View
QFN24
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Symbol
LAT OUT0 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 OUT9 OUT10 OUT11 OUT12 OUT13 OUT14 OUT15 BLANK SOUT IREF VDD GND
SIN SCLK
REV1.3 -MAY 2010 RELEASED, AUG 2012 UPDATED –
Top View
Function
Data Strobe Input Pin Output Port Output Port Output Port Output Port Output Port Output Port Output Port Output Port Output Port Output Port Output Port Output Port Output Port Output Port Output Port Output Port Output Enable Shift Register Data Output Pin External Resistor Input Port Power Supply GND Shift Register Data Input Pin Shift Register Clock Input Pin
-2-
AiT Semiconductor Inc.
www.ait-ic.com
AD5026
LED DISPLAY DRIVER 16-BIT CONSTANT-CURRENT LED DRIVER
ABSOLUTE MAXIMUM RATINGS
VDD, Supply Voltage
7V
VOUT, Output Voltage
-0.5~10V
IOUT, Output Current
90mA
VIN, Input Voltage
-0.4~VDD+0.4V
FCLK, Clock Frequency
25MHz
IGND, GND Current
1500mA
TSTG, Storage Temperature Range
-65~+150oC
TOPR, Operating Temperature Range
-40~+85oC
VESD, ESD Voltage
4000V
Stresses above may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated in the Electrical Characteristics are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
REV1.3 -MAY 2010 RELEASED, AUG 2012 UPDATED –
-3-
AiT Semiconductor Inc.
www.ait-ic.com
AD5026
LED DISPLAY DRIVER 16-BIT CONSTANT-CURRENT LED DRIVER
ELECTRICAL CHARACTERISTICS
VDD=5V, TA=25oC, unless otherwise specified.
Parameter
Symbol
High-level output current
IOH
Low-level output Voltage
VOL
High-level output Voltage
VOH
Conditions
IOL = 1mA IOH= -1mA
Min Typ Max Unit - - 1 uA - - 0.3 V 3 - -V
IOL1
Vo ≥0.4V, RSET = 490Ω
-
36
-
Low-level Output Current
mA
IOL2
Vo ≥0.32V, RSET = 245Ω
-
72
-
Current Skew
B2B
Pull-up Resistor Pull-down Resistor
RIN(up) RIN(down)
IDD(OFF) 1
Supply Current (“OFF”) IDD(OFF) 2
IDD(OFF) 3
Supply Current (“ON”)
IDD(ON) 1 IDD(ON) 2
VDS=800mV, RSET = 490Ω VDS= 300mV, RSET = 490Ω
EN Pin LATCH PIn RSET=OPEN OUT 0 to 15 = OFF RSET = 490Ω OUT 0 to 15 = OFF RSET = 245Ω OUT 0 to 15 = OFF RSET = 490Ω OUT 0 to 15 = ON RSET = 245Ω OUT 0 to 15 = ON
- ±2 - ±3
%
- 250 - KΩ - 250 - KΩ
- 1.2 - mA
- 8 - mA
- 15 - mA
- 8 - mA
- 15 - mA
REV1.3 -MAY 2010 RELEASED, AUG 2012 UPDATED –
-4-
AiT Semiconductor Inc.
www.ait-ic.com
AD5026
LED DISPLAY DRIVER 16-BIT CONSTANT-CURRENT LED DRIVER
AC CHARACTERISTICS
VDD=5V, TA=25oC, unless otherwise specified.
Parameter
Symbol
Conditions
Supply Voltage
VDD
Output Voltage
VO
Output Current
Input Voltage (“H” Level)
Input Voltage (“L” Level)
LAT
Pulse Width
CLK
ENB
Setup Time for DATA
Hold Time for DATA
Setup Time for LAT
Hold Time for LAT
Clock Frequency
IO
IOH IOL VIH VIL tw(L) tw(CLK) tw(ENB) tsu(D) th(D) tsu(L) th(L) FCLK
SOUT=VDD SOUT=0
VDD=3.3 to 5V Cascade Operation
Min Typ Max Unit
3.3 4.2 5.0 V
- - 10 V
2 - 90 mA
- - -1 mA
--1
0.7VDD - VDD+0.3 V
-0.3
-
0.3VDD
V
20 -
-
20 -
- ns
50 -
-
5-
- ns
10 -
- ns
5-
- ns
5-
- ns
- - 25 MHz
REV1.3 -M.