CAT4139 Datasheet, PDF (2/13 Pages) Catalyst Semiconductor – 22V High Current Boost White LED Driver

CAT4139
V_IN
5V
C1
4.7 mF
L
22 mH
SW
VIN
D
C2
1 mF
35 V
V_OUT
9 strings at
20 mA
OFF _ON
CAT4139
SHDN FB
GND
R2
(300 mV) _{1 kW}
I_OUT
180 mA
R1
1.62 W
L: Sumida CDRH6D28−220
D: Central CMSH1−40 (rated 40 V)
Figure 1. Typical Application Circuit
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameters
Ratings
Units
VIN, FB Voltage
−0.3 to +7
V
SHDN Voltage
−0.3 to +7
V
SW Voltage
−0.3 to +40
V
Storage Temperature Range
−65 to +160
_C
Junction Temperature Range
−40 to +150
_C
Lead Temperature
300
_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 (Typical application circuit with external components is shown above.)
Parameters
Range
Units
VIN
up to 5.5
V
SW pin voltage
0 to 22
V
Ambient Temperature Range (Note 2)
−40 to +85
_C
2. TSOT23−5 package thermal resistance q_JA = 135°C/W when mounted on board over a ground plane.
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