CAT3644 Datasheet, PDF (2/14 Pages) Catalyst Semiconductor – 4-Channel Ultra High Efficiency Quad-Mode TM LED Driver

CAT3644
1 mF
1 mF
V_IN
2.4 V ^CIN
to
5.5 V ^{1 mF}
1−Wire
EZDimt
Programming
4.02 kΩ
C1+ C1− C2+ C2−
V_IN
V_OUT
CAT3644
EN/DIM
RSET
GND
LED1
LED2
LED3
LED4
V_OUT
C_OUT
1 mF
20 mA
Figure 1. Typical Application Circuit
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Unit
V_IN, LEDx, C1±, C2±, EN/DIM voltage
V_OUT voltage
Storage Temperature Range
6
V
7
V
−65 to +160
_C
Junction Temperature Range
−40 to +150
_C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
Table 2. RECOMMENDED OPERATING CONDITIONS
Parameter
V_IN
Ambient Temperature Range
I_LED per LED pin
LED Forward Voltage Range
Rating
Unit
2.5 to 5.5
V
−40 to +85
_C
up to 30
mA
1.3 to 4.3
V
NOTE: Typical application circuit with external components is shown above.
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