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TLC5904PZP Fiches technique(PDF) 7 Page - Texas Instruments

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No de pièce TLC5904PZP
Description  LED DRIVER
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

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TLC5904
LED DRIVER
SLLS391 – NOVEMBER 1999
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions (Continued)
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
TSENA
80
I
TSD(thermal shutdown) enable. When TSENA is high, TSD is enabled. When TSENA is
low, TSD is disabled.
TEST1
TEST2
58
75
I
TEST. Factory test terminal. TEST1 and TEST2 should be connected to GND for normal
operation.
THERMAL PAD
package bottom
Heat sink pad. This pad is connected to the lowest potential IC or thermal layer.
VCCANA
45
Analog power supply voltage
VCCLOG
81
Logic power supply voltage
VCCLED
41
LED driver power supply voltage
WDTRG
62
I
WDT (watchdog timer) trigger input. By applying a scan signal to this terminal, the scan
signal can be monitored by turning the constant current output off to protect the LED from
damage if the scan signal stops during the constant period designed.
WDCAP
42
I
WDT (watchdog timer) detection time adjustment. WDT detection time is adjusted by
connecting a capacitor between WDCAP and GND. When WDCAP is directly connected
to GND, WDT function is disabled. In this case, WDTRG should be tied to a high or a low
level.
XDOWN1
60
O
Shutdown. XDOWN1 is configured as open collector. It goes low when constant current
output is shut down by WDT or TSD function.
XDOWN2
59
O
OVM comparator output. XDOWN2 is configured as an open collector. It monitors terminal
voltage when constant current output is turned on. XDOWN2 goes low when this voltage
is lower than the level selected by OVM latch. When BLANK is set high, the previous level
is held.
XENABLE
64
I
DCLK enable. When XENABLE is low, data transfer is enabled. Data transfer starts on the
rising edge of DCLK after XENABLE goes low. During XENABLE high, no data is
transferred.
XLATCH
61
I
Latch. When XLATCH is high, data on the shift register goes through latch. When XLATCH
is low, data is latched. Accordingly, if data on the shift register is changed during XLATCH
high, this new value is latched (level latch).
XOE
63
I
Data output enable. When XOE is low, DOUT0–7 terminals are drived. When XOE is high,
DOUT0–7 terminals go to a high
-impedance state.
absolute maximum ratings (see Note 1)
Logic supply voltage, VCC(LOG)
– 0.3 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply voltage for constant current circuit, VCC(LED)
– 0.3 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog supply voltage, VCCANA
– 0.3 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current (dc), IO(LC)
90 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range
– 0.3 V to VCCLOG + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, VO(DOUTn), VO(BOUT) and VO(GSOUT)
– 0.3 V to VCCLOG + 0.3 V
. . . . . . . . . . . . . .
Output voltage range, VO(OUTn) and VO(DOWNn)
– 0.3 V to 18 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–55
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation at (or below) TA = 25°C
4.7 W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power dissipation rating at (or above) TA = 25°C
38.2m W/
°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to the GNDLOG terminal.


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