Macroblock
Datasheet
MBI5025
16-Channel Constant Current LED Sink Driver
Features
16 constant-current output channels Constant output current invariant to load voltage change:
Constant output current range: 1-45mA@VDD=5V; 1-30mA@VDD=3.3V Excellent output current accuracy between channels: ±1.5% (typ.) and ±2% (max.) between ICs: ±1.5% (typ.) and ±3% (max.) Output current adjusted through an external resistor
Fast response of output current, OE (min.): 70ns with good uniformity between output channels
Staggered delay of output 25MHz clock frequency Schmitt trigger input 3.3V/ 5V supply voltage RoHS compliant package Package MSL Level: 3
Small Outline Package
GD: SOP24L-300-1.27 GF: SOP24L-300-1.00 Shrink SOP
GP: SSOP24L-150-0.64 Thin Shrink SOP
GTS: TSSOP24L-173-0.65
Product Description
With PrecisionDrive™ technology, MBI5025 is designed for LED displays which require to operate at low current and to match the luminous intensity of each channel. It provides supply voltage and accepts CMOS logic input at 3.3V and 5.0V to meet the trend of low power consumption. MBI5025 contains a serial buffer and data latches which convert serial input data into parallel output format. At MBI5025 output stage, sixteen regulated current ports are designed to provide uniform and constant current sinks for driving LEDs within a large range of VF variations.
MBI5025 provides users with great flexibility and device performance while using MBI5025 in their system design for LED display applications, e.g. LED panels. It accepts an input voltage range from 3V to 5.5V and maintains a constant current up from 1mA to 45mA determined by an external resistor, Rext, which gives users flexibility in controlling the light intensity of LEDs. MBI5025 guarantees to endure maximum 17V at the output port. The high
clock frequency, 25 MHz, also satisfies the system requirements of high volume data transmission.
Macroblock, Inc. 2015 6F-4, No.18, Pu-Ting Rd., Hsinchu, Taiwan 30072, R.O.C. TEL: +886-3-579-0068, FAX: +886-3-579-7534 E-mail:
[email protected]
-1-
April 2015, VB.01
MBI5025
Block Diagram
16-Channel Constant Current LED Sink Driver
OUT0 OUT1
OUT14 OUT15
R-EXT
VDD
IO Regulator
OE
LE
GND
SDI CLK
16-bit Output Driver 16
16-bit Output Latch
16 16-bit Shift Register
SDO
Terminal Description
Pin Configuration
Pin No.
1 2 3
4 5~20
21
22
23 24
Pin Name
GND
Function
Ground terminal for control logic and current sink
SDI Serial-data input to the shift register
CLK
Clock input terminal for data shift on rising edge
Data strobe input terminal
LE
Serial data is transferred to the output latch when LE is high. The data is latched when
LE goes low.
OUT0 ~ OUT15 Constant current output terminals
Output enable terminal
OE
When (active) low, the output drivers are enabled; when high, all output drivers are
turned OFF (blanked).
SDO
Serial-data output to the following SDI of next driver IC. SDO signal change on rising edge of CLK.
R-EXT
Input terminal used to connect an external resistor for setting up output current for all output channels
VDD
3.3V/ 5V supply voltage terminal
GND SDI
CLK LE OUT0 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6
OUT7
1 2 3 4 5 6 7 8 9 10 11 12
24 VDD 23 R-EXT 22 SDO
21 OE
20 OUT15 19 OUT14 18 OUT13
17 OUT12 16 OUT11
15 OUT10 14 OUT9 13 OUT8
MBI5025GD/GF/GP/GTS
April 2015, VB.01 -2-
MBI5025
16-Channel Constant Current LED Sink Driver
Equivalent Circuits of Inputs and Outputs
OE terminal
VDD
LE terminal
VDD
IN IN
CLK, SDI terminal
VDD
IN
SDO terminal
VDD
OUT
April 2015, VB.01 -3-
MBI5025
Timing Diagram
16-Channel Constant Current LED Sink Driver
CLK SDI
N=0 1
3 4 5 6 7 8 9 10 11 12 13 14 15
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
LE OE
OUT0 OUT1 OUT2 OUT3
D0 OFF ON
OFF D1 ON
OFF D2 ON
OFF ON
OUT15 SDO
: don’t care
D15 D15
OFF ON
Truth Table
CLK
LE H L H X X
OE SDI OUT0 … OUT 7 … OUT15
L Dn Dn ….. Dn - 7 …. Dn - 15
L Dn+1
No Change
L
Dn+2
Dn + 2 …. Dn - 5 …. Dn - 13
L
Dn+3
Dn + 2 …. Dn - 5 …. Dn - 13
H Dn+4
Off
SDO Dn-15 Dn-14 Dn-13 Dn-13 Dn-13
April 2015, VB.01 -4-
MBI5025
16-Channel Constant Current LED Sink Driver
Maximum Ratings
Characteristic Supply Voltage
Input Voltage
Output Current
Sustaining Voltage at OUT Port
GND Terminal Current
GD–type
Power Dissipation (On PCB, Ta=25°C)
GF–type GP–type
GTS-type
GD–type
Thermal Resistance (On PCB, Ta=25°C)
GF–type GP–type
GTS-type
Junction Temperature
Operating Ambient Temperature
Storage Temperature
ESD Rating
HBM (MIL-STD-883H Method 3015.8, Human Body Mode)
MM (ANSI/ESD S5.2-2009, Machine Mode)
Symbol VDD VIN IOUT VDS IGND
PD
Rth(j-a)
Tj,max Topr Tstg HBM
MM
Rating 0~7.0
-0.4~VDD+0.4 +50
-0.5~+17.0 +800 2.88 2.35 1.76 3.87 46.60 53.28 70.90 32.34 150**
-40~+85 -55~+150
Class 2 (3.5KV)
Class M4 (400V)
Unit V V mA V mA
W
°C/W
°C °C °C -
-
*The PCB size is 76.2mm*114.3mm in simulation. Please refer to JEDEC JESD51. ** Operation at the maximum ra.