CAT4137

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2

Figure 1. Typical Application Circuit

VIN

CAT4137

LD

R1

15 W

1 mF

C1

0.22 mF

C2

FB

SW

GND

ON

22 mH

OFF

2.2 to

5.5 V

L: Murata LQH32CN220

D: Central CMDSH2-3 (rated 30 V)

SHDN

Table 1. ABSOLUTE MAXIMUM RATINGS

Parameter

Rating

Unit

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

Parameter

Range

Unit

VIN

2.2 to 5.5

V

SW pin voltage

0 to 24

V

Ambient Temperature Range

−40 to +85

_C

LED Bias Current

1 to 30

mA