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PDF BL8589 Data sheet ( Hoja de datos )
| Número de pieza | BL8589 | |
| Descripción | 16-Channel Constant-Current LED Driver | |
| Fabricantes | BELLING | |
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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
CLK
LE BLLC85983900
OE
SDO
VDD
GND
REXT
10uF
VDD
100nF
SDI
CLK
LE
OE
10uF
OUT0
OUT15
BLLC89538090
SDO
VDD
GND
REXT
VDD
100nF
www.belling.com.cn
1
1 page  
BL8589
SWITCHING CHARACTERISTICS
(Test Conditions: TA1=25C, VIH=VDD=5.0V, VOUT(X)=1V, VIL=0V, RREXT=910Ω , VL=2V, RL=51Ω ,
CL=15pF(see also Timing section).
Symbol
Parameter
Conditions
Min Typ2 Max Units
fCLK
fCLKC
twh0
twh1
tsu0
tsu1
th0
th1
Clock Frequency
Clock Frequency
(cascade devices)
Clock pulse duration
LE pulse duration
Setup Time
Hold Time
CLK= Logic “1”
LE= Logic “1”
SDI to CLK↑
CLK↑ to LE↑
CLK↑ to SDI
LE↓ to CLK↑
- - 30 MHz
- - 25 MHz
16 - - ns
20 - - ns
10 - - ns
10 - - ns
10 - - ns
10 - - ns
tr0
tr1
Rise Time
SDO, 10/90% points
(measurement circuit A)
OUTx, VDD=5V, 10/90% points
(measurement circuit B)
- - 16 ns
- 10 30 ns
tf0
tf1
Fall Time
SDO, 10/90% points
(measurement circuit A)
OUTx, VDD=5V, 10/90% points
(measurement circuit B)
- - 16 ns
- 10 30 ns
tpd0
CLK↑ to SDO
(measurement circuit A)
- - 30 ns
tpd1
Propagation Delay OE ↓to OUTx
Time
(measurement circuit B)
- - 60 ns
tpd2
LE↑to OUTx
(measurement circuit B)
- - 60 ns
tw( OE )
Output Enable Pulse
Duration
(see Timing Diagrams section)
60 - - ns
1 Tested at 25°C. Specifications are assured by design and characterization over the operating temperature range of –40°C to 85°C.
2 Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions. Performance may
vary for individual units, within the specified maximum and minimum limits.
3 Err = (IO(min or max) – IO(av)) / IO(av). IO(av) is the average current of all outputs. IO(min or max) is the output current with the greatest
Difference from IO(av).
4 Recommended operating range: VO = 1.0 to 3.0 V.
INPUT-OUTPUT TRUTH TABLE
SDI CLK
Shift Register Contents
I0 I1 I2 … I15
SDO LE
Latch Contents
I0 I1 I2 … I15
OE
Output Contents
I0 I1 I2 … I15
H
H R0 R1 … R14
R15
L
L R0 R1 … R14
R15
X
R0 R1 R2 … R15
X
XXX … X
L R0 R1 R2 … R15
P0 P1 P2 … P15
H P0 P1 P2 … P15 L P0 P1 P2 … P15
XXX … X
H Hiz Hiz Hiz… Hiz
L = Low logic (voltage) input, H = High logic (voltage) input, X = Don’t care, P = Present state, R = Previous state，Hiz=High impedance
www.belling.com.cn
5
5 Page 
PACKAGE LINE (Continued)
Package
TSSOP-24 Devices per reel
2000Pcs
BL8589
Unit mm
Symbol
A
A1
A2
A3
b
b1
c
c1
Dimension (mm)
MIN NOM MAX
- - 1.77
0.08 0.18 0.28
1.20 1.40 1.60
0.55 0.65 0.75
0.23 - 0.33
0.22 0.25 0.28
0.21 - 0.26
0.19 0.20 0.21
Symbol
D
E
E1
e
L
L1
Dimension (mm)
MIN NOM MAX
8.45 8.65 8.85
5.8 6.0 6.2
3.7 3.9 4.1
0.635BSC
0.5 0.65 0.8
1.05BSC
0 - 8°
www.belling.com.cn
11
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| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet BL8589.PDF ] | |
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