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TLC5947RHBR Datasheet(PDF) 5 Page - Texas Instruments

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Part # TLC5947RHBR
Description  24-Channel, 12-Bit PWM LED Driver with Internal Oscillator
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TLC5947RHBR Datasheet(HTML) 5 Page - Texas Instruments

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SWITCHING CHARACTERISTICS
FUNCTIONAL BLOCK DIAGRAM
SCLK
IREF
XLAT
GND
G yscal
ra
e(12Bits
24Ch
´
annels)Data
ShiftRegister
12BitsPWMTiming Control
OUT0
Thermal
Detection
VCC
OU 23
T
SOUT
4 MHz
Internal
Oscillator
OUT1
OU 22
T
288
LSB
MSB
0
287
VCC
SIN
Grayscale(12Bits
24C
´
hannels)Data
DataLatch
LSB
0
288
MSB
287
BL NK
A
24-Channel,C nstantCurre
o
ntDriver
24
D
Q
CK
¼
TLC5947
www.ti.com ................................................................................................................................................. SBVS114A – JULY 2008 – REVISED SEPTEMBER 2008
At VCC = 3.0 V to 5.5 V, TA = –40°C to +85°C, CL = 15 pF, RL = 150 Ω, RIREF = 1.6 kΩ, and VLED = 5.5 V. Typical values at
VCC = 3.3 V and TA = +25°C, unless otherwise noted.
TLC5947
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tR0
SOUT
10
15
ns
Rise time
tR1
OUTn
15
40
ns
tF0
SOUT
10
15
ns
Fall time
tF1
OUTn
100
300
ns
Internal oscillator
fOSC
2.4
4
5.6
MHz
frequency
tD0
SCLK
↓ to SOUT
15
25
ns
tD1
BLANK
↑ to OUT0 sink current off
20
40
ns
tD2
Propagation delay time
OUT0 current on to OUT1/5/9/13/17/21 current on
15
24
33
ns
tD3
OUT0 current on to OUT2/6/10/14/18/22 current on
30
48
66
ns
tD4
OUT0 current on to OUT3/7/11/15/19/23 current on
45
72
99
ns
Copyright © 2008, Texas Instruments Incorporated
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