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| CAT4238_16 Datasheet, PDF (2/12 Pages) ON Semiconductor – High Efficiency 10 LED Boost Converter | |||
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CAT4238
VIN
C1
4.7 mF
OFF ON
L
47 mH
D
VOUT
C2
SW 0.22 mF
VIN
CAT4238
SHDN
FB VFB = 300 mV
GND
R1
15 W
20 mA
L: Sumida CDC5D23Bâ470
D: Central CMDSH05â4
C2: Taiyo Yuden UMK212BJ224 (rated 50 V)
Figure 1. Typical Application Circuit
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameters
Ratings
Units
VIN, FB voltage
SHDN voltage
â0.3 to +7
V
â0.3 to +7
V
SW voltage (Note 1)
up to 60
V
Storage Temperature Range
â65 to +160
_C
Junction Temperature Range
â40 to +150
_C
Lead Temperature
300
_C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. The SW pin voltage is rated up to 39 V for external continuous DC voltage.
Table 2. RECOMMENDED OPERATING CONDITIONS
Parameters
Range
Units
VIN
SW pin voltage
up to 5.5
V
0 to 38
V
Ambient Temperature Range
â40 to +85
_C
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
NOTE: Typical application circuit with external components is shown above.
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