CAT37RD4-TE13 datasheet(4/13 Pages) CATALYST

Part #	CAT37RD4-TE13

Description	CMOS White LED Driver Boost Converter

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Manufacturer	CATALYST [Catalyst Semiconductor]

Direct Link	http://www.catalyst-semiconductor.com

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4 / 13 page

CAT37

4

Doc. No. 5005, Rev. R

TYPICAL CHARACTERISTICS

VIN = 3.6 V,TAMB = 25˚C, CIN = 4.7

µF, COUT = 1µF, L = 6.8 µH, unless otherwise specified.

14.0

14.5

15.0

15.5

16.0

-50

-25

0

25

50

75

100

4 LEDs

LED Current vs. Temperature

80

85

90

95

100

105

110

0

5

10

15

20

LED CURRENT [mA]

3 LEDs

FB Pin Voltage vs. LED Current

0.8

0.9

1.0

1.1

1.2

1.3

-50

-25

0

25

50

75

100

LOAD =20 mA

LOAD = 3 LEDs VIN

= 3.6V

LOAD = 20mA

LOAD = 3 LEDs

VIN = 3.6V

Switching Frequency vs. Temperature

0

10

20

30

23

4

5

6

INPUT VOLTAGE [V]

3 LEDs

20mA

10mA

3 LEDs

20mA

10mA

LED Current vs. Input Voltage

0.8

0.9

1.0

1.1

1.2

1.3

12

34

5

6

INPUT VOLTAGE [V]

4 LEDs

Switching Frequency vs. Input Voltage

80

85

90

95

100

-50

-25

0

25

50

75

100

4 LEDs at 15mA

VIN = 3.6V

4LEDs at 15mA

VIN = 3.6V

FB Pin Voltage vs. Temperature

4 LEDs

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CAT37RD4-TE13 Datasheet(PDF) 4 Page - Catalyst Semiconductor

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