BL8589
16-Channel Constant-Current LED Driver
DESCRIPTION
The BL8589 is designed for LED display
applications. The device has an input shift
register with corresponding data latches and
16 constant current sink drivers.
The device support digital input with internal
shift registers and latches, hence can be
controlled directly by microprocessor-based
systems. With a standard 3.3V or 5V logic
supply, serial data input rates can reach up to
30 MHz. The BL8589 allows user defined
maximum LED drive current level which is set
by a single external resistor. Chip build-in
serial data output permits cascading of multiple
devices in applications requiring additional
drive lines.
The BL8589 is available in a variety of 24-
terminal packages: QFN44-24, which has an
exposed thermal pad, SSOP-24 and TSSOP-
24. All packages are lead (Pb) free and RoHS
compliable.
FEATURES
16 constant-current output channels, with
maximum current capability up to 50 mA
each
3.0 to 5.5 V logic supply range
Schmitt trigger inputs for improved noise
Immunity
Power-On Reset , all register bits=0
Low-power CMOS logic and latches
High data input rate: 30MHz
Output current accuracy: between channels
< ±3% and between ICs ±6%, over the full
operating temperature range
Internal UVLO and thermal shutdown (TSD)
circuitry
APPLICATIONS
Single-color, multicolor, or full-color LED
display
Single-color, multicolor, or full-color LED
signboard
Display backlighting
Multicolor LED lighting
TYPICAL APPLICATION
VLED
10uF
OUT0
OUT15
OUT0
OUT15
10uF
SDI
CLK
LE
OE
SDO
VDD
GND
REXT
VDD
SDI
CLK
LE
OE
SDO
VDD
GND
REXT
VDD
Controller
BL8589
LC9300
100nF
BL8589
LC9300
100nF
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BELLING [ SHANGHAI BELLING CO., LTD. ]
