LT3466 데이터 시트보기 (PDF) - Linear Technology

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LT3466

Dual Full Function White LED Step-Up Converter with Built-In Schottky Diodes

Linear Technology 

TYPICAL APPLICATIO S

Li-Ion to 10/10 White LEDs

3V TO 5V

CIN

1µF

L1

68µH

L2

68µH

COUT1

1µF

SW1 VIN SW2

VOUT1

VOUT2

LT3466

COUT2

1µF

FB1

FB2

CTRL1 RT CTRL2

OFF ON

147k OFF ON

1%

RFB1

16.5Ω

CIN: TAIYO YUDEN JMK107BJ105

COUT1, COUT2: TAIYO YUDEN UMK325BJ105

L1, L2: TOKO A920CY-680M

RFB2

16.5Ω

3466 TA07a

2 AA Cells to 2/2 White LEDs

3.3V

VCC

1.8V TO 3V

CIN2

1µF

L1

15µH

L2

15µH

CIN1

0.1µF

COUT1

1µF

SW1 VIN SW2

VOUT1

VOUT2

LT3466

FB1

FB2

RFB1

10Ω

CTRL1 RT CTRL2

OFF ON

63.4k

1%

CIN1: TAIYO YUDEN EMK107BJ104

CIN2: TAIYO YUDEN JMK107BJ105

COUT1, COUT2: TAIYO YUDEN GMK316BJ105

L1, L2: MURATA LQH32CN150

OFF ON

RFB2

10Ω

3466 TA08a

COUT2

1µF

LT3466

Conversion Efficiency

90

VIN = 3.6V

10/10 LEDs

85

80

75

70

65

60

0

4

8

LED CURRENT (mA)

12

3466 TA07b

Conversion Efficiency

75

VIN = 2.4V

2/2 LEDs

70

65

60

55

50

0

5

10

15

20

LED CURRENT (mA)

3466 TA08b

3466fa

17

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