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8-Port, 5.5V Constant-Current LED Driver with
LED Fault Detection and Watchdog
ABSOLUTE MAXIMUM RATINGS
Voltage (with respect to GND)
V+ ............................................................................-0.3V to +6V
OUT_ .......................................................................-0.3V to +6V
DIN, CLK, LE, OE , SET ................................-0.3V to (V+ + 0.3V)
DOUT Current ..................................................................±10mA
OUT_ Sink Current .............................................................60mA
Total GND Current ...........................................................480mA
Continuous Power Dissipation (T A = +70 ° C)
16-Pin SSOP (derate 7.1mW/ ° C above +70 ° C) ............571mW
16-Pin PDIP (derate 10.5mW/ ° C above +70 ° C)............842mW
16-Pin TSSOP (derate 21.3mW/ ° C over
T A = +70 ° C) ..............................................................1702mW
Operating Temperature Range .........................-40 ° C to +125 ° C
Junction Temperature ......................................................+150 ° C
Storage Temperature Range .............................-65 ° C to +150 ° C
Lead Temperature (soldering, 10s) .................................+300 ° 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 in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
( Typical Operating Circuit , V+ = 3V to 5.5V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V+ = 5V, T A = +25 ° C.)
(Note 1)
PARAMETER
Operating Supply Voltage
SYMBOL
V+
CONDITIONS
MIN
3.0
TYP
MAX
5.5
UNITS
V
Output Voltage
V OUT
5.5
V
Standby Current
(Interface Idle, All Output Ports
High Impedance, R SET = 360 ? )
I +
All logic inputs at V+ or GND, DOUT
unloaded
4.5
5.6
mA
Standby Current
(Interface Running, All Output
Ports High Impedance,
I +
f CLK = 5MHz, OE = V+, DIN and LE = V+
or GND, DOUT unloaded
4.7
6
mA
R SET = 360 ? )
Supply Current
(Interface Idle, All Output Ports
Active Low, R SET = 360 ? )
I +
All logic inputs at V+ or GND,
DOUT unloaded
10
25
mA
Input High Voltage
DIN, CLK, LE, OE
Input Low Voltage
DIN, CLK, LE, OE
Hysteresis Voltage
DIN, CLK, LE, OE
V IH
V IL
? V I
0.7 V+
0.8
0.3 V+
V
V
V
Input Leakage Current
DIN, CLK, LE, OE
I IH , I IL
-1
+1
μA
Output-High Voltage DOUT
Output Low Voltage
V OH
V OL
I SOURCE = 4mA
I SINK = 4mA
V+
- 0.5V
0.5
V
V
Output Current
OUT_
Output Leakage Current OUT_
I OUT
I LEAK
V+ = 3V to 5.5V, V OUT = 0.8V to 2.5V,
R SET = 360 ?
OE = V+, V OUT = V+
42
50
56
1
mA
μA
Watchdog Timeout
t WD
1
s
2
_______________________________________________________________________________________
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