TLC5904 Datasheet, PDF (7/27 Pages) Texas Instruments – LED DRIVER

TLC5904
LED DRIVER
SLLS391 – NOVEMBER 1999
Terminal Functions (Continued)
TERMINAL
NAME
NO.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _TSENA
80
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ TEST1
TEST2
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{THERMAL PAD}
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _VCCANA
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _VCCLOG
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _VCCLED
58
75
package bottom
45
81
41
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _WDTRG
62
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _WDCAP
42
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _XDOWN1
60
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _XDOWN2
59
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _XENABLE
64
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _XLATCH
61
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _XOE
63
I/O
DESCRIPTION
I
TSD(thermal shutdown) enable. When TSENA is high, TSD is enabled. When TSENA is
low, TSD is disabled.
I
TEST. Factory test terminal. TEST1 and TEST2 should be connected to GND for normal
operation.
Heat sink pad. This pad is connected to the lowest potential IC or thermal layer.
Analog power supply voltage
Logic power supply voltage
LED driver power supply voltage
WDT (watchdog timer) trigger input. By applying a scan signal to this terminal, the scan
I 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.
WDT (watchdog timer) detection time adjustment. WDT detection time is adjusted by
I
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.
Shutdown. XDOWN1 is configured as open collector. It goes low when constant current
O _{output is shut down by WDT or TSD function.}
OVM comparator output. XDOWN2 is configured as an open collector. It monitors terminal
O
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.
DCLK enable. When XENABLE is low, data transfer is enabled. Data transfer starts on the
I rising edge of DCLK after XENABLE goes low. During XENABLE high, no data is
transferred.
Latch. When XLATCH is high, data on the shift register goes through latch. When XLATCH
I is low, data is latched. Accordingly, if data on the shift register is changed during XLATCH
high, this new value is latched (level latch).
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), I_O(LC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 mA
Input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to VCCLOG + 0.3 V
Output voltage range, V_O(DOUTn), V_O(BOUT) and V_O(GSOUT) . . . . . . . . . . . . . . – 0.3 V to VCCLOG + 0.3 V
Output voltage range, V_O(OUTn) and V_O(DOWNn) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to 18 V
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 150°C
Continuous total power dissipation at (or below) T_A = 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.7 W
Power dissipation rating at (or above) T_A = 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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