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TLC5928_16 Datasheet(Scheda tecnica) 5 Page - Texas Instruments

Numero della parte TLC5928_16
Dettagli  16-Channel, Constant-Current LED Driver with LED Open Detection
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Produttore  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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VCC
VCC
SCLK
SIN
LAT
BLANK
IREF
GND
GND
16
16
16
MSB
MSB
0
15
LSB
SOUT
OUT0
OUT1
OUT14 OUT15
16-ChannelConstantCurrentSinkDriver
SIDLatch
Thermal
Detection
On/OffControlShiftRegister
(1Bitx16Channels)
16
0
15
LSB
On/OffControlDataLatch
(1Bitx16Channels)
16-ChannelLEDOpenDetection
¼
TLC5928
www.ti.com
SBVS120E
– JULY 2008 – REVISED JANUARY 2011
SWITCHING CHARACTERISTICS
At VCC = 3.0 V to 5.5 V, TA = –40°C to +85°C, CL = 15 pF, RL = 130 Ω, RIREF = 1.5 kΩ, and VLED = 5.5 V. Typical values at
VCC = 3.3 V and TA = +25°C, unless otherwise noted.
TLC5928
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tR0
SOUT (see Figure 5)
5
15
ns
Rise time
tR1
OUTn (see Figure 4)
10
30
ns
tF0
SOUT (see Figure 5)
5
15
ns
Fall time
tF1
OUTn (see Figure 4)
10
30
ns
tD0
SCLK
↑ to SOUT
8
20
ns
LAT
↑ or BLANK↓ to OUTn sink current on
tD1
12
30
ns
Propagation delay time
(see Figure 10)
LAT
↑ or BLANK↑ to OUTn sink current off
tD2
12
30
ns
(see Figure 10)
On/off latch data = all
'1', 20 ns BLANK low level
tON_ERR
Output on-time error(1)
–8
+8
ns
one-shot pulse input (see Figure 4)
(1)
Output on-time error (tON_ERR) is calculated by the formula: tON_ERR (ns) = tOUT_ON – BLANK low level one-shot pulse width (TWL2).
tOUT_ON indicates the actual on-time of the constant-current driver.
FUNCTIONAL BLOCK DIAGRAM
© 2008–2011, Texas Instruments Incorporated
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Product Folder Link(s): TLC5928




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