BL8589 Datasheet, PDF (1/12 Pages) SHANGHAI BELLING CO., LTD. – 16-Channel Constant-Current LED Driver

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
Controller
VLED
OUT0
OUT15
SDI
SDO
CLK
VDD
LE ^BLLC85983900
GND
OE
REXT
10uF
VDD
SDI
100nF
CLK
LE
OE
10uF
OUT0
OUT15
SDO
VDD
BLLC8953809 0
GND
REXT
VDD
100nF
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