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CAT4008 Datasheet, PDF (3/13 Pages) Catalyst Semiconductor – 8-Channel Constant Current LED Driver | |||
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CAT4008
Table 3. ELECTRICAL OPERATING CHARACTERISTICS
(VDD = 5.0 V, TAMB = 25°C, over recommended operating conditions unless specified otherwise.)
Symbol
Name
Conditions
Min
DC CHARACTERISTICS
ILEDâACC
LED Current (any channel)
ILEDâMAT
LED Current Matching
(ILED â ILEDAVR) / ILEDAVR
ÎIVDD
LED current regulation vs. VDD
VLED = 1 V, RSET = 3.08 kW
VLED = 1 V, RSET = 1.54 kW
VLED = 1 V, RSET = 769 W
VLED = 1 V, RSET = 3.08 kW
VLED = 1 V, RSET = 1.54 kW
VLED = 1 V, RSET = 769 W
VDD within 4.5 V and 5.5 V
LED current 30 mA
18
36
â6.0
ÎIVLED
LED current regulation vs. VLED
VLED within 1 V and 3 V
LED current 30 mA
IDDOFF
IDDON
ILKG
RLATCH
RBLANK
VIH
VIL
VHYS
IIL
Supply Current (all outputs off)
Supply Current (all outputs on)
LEDn output Leakage
LATCH Pullâdown Resistance
BLANK Pullâup Resistance
Logic high input voltage
Logic low input voltage
Logic input hysteresis voltage
Logic Input leakage current
(CLK, SIN)
RSET = 3.08 kW
RSET = 769 W
RSET = 3.08 kW
RSET = 769 W
VLED = 5 V, outputs off
â1
100
100
0.7xVDD
VI = VDD or GND
â5
VOH
VOL
VRSET
TSD
THYST
SOUT logic high output voltage
SOUT logic low output voltage
RSET Regulated Voltage
Thermal Shutdown
Thermal Hysteresis
IOH = â1 mA
IOL = 1 mA
BLANK high, outputs off
VCCâ0.3 V
1.17
Typ
20
40
80
±1.5
±1.5
±2.0
±0.1
±0.05
2
5.5
2.5
6.2
180
180
0.1xVDD
0
1.20
160
20
Max
22
44
+6.0
8
9
1
300
300
0.3xVDD
5
0.3
1.23
Units
mA
%
%/V
%/V
mA
mA
mA
kW
kW
V
V
mA
V
V
°C
°C
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