LT3466EDD-1 Ver la hoja de datos (PDF) - Linear Technology

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componentes Descripción

Fabricante

LT3466EDD-1

White LED Driver and Boost Converter in 3mm × 3mm DFN Package

Linear Technology 

LT3466-1

TYPICAL APPLICATIO S

Li-Ion to 10 White LEDs and LCD Bias (±8V) with Output Disconnect

3V TO 5V

10 LEDs

CIN

1µF

C1

0.1µF

L1

68µH

L2

33µH

COUT1

1µF

SW1 VIN SW2

VOUT1

VOUT2

LT3466-1

C2

0.1µF

RFB1

16.5Ω

FB1

FB2

CTRL1 RT CTRL2

OFF ON

147k OFF ON

CIN: TAIYO YUDEN JMK107BJ105

COUT1: TAIYO YUDEN UMK325BJ105

COUT2, COUT3: TAIYO YUDEN GMK316BJ105

C1, C2: TAIYO YUDEN UMK212BJ104

D1, D2: PHILIPS BAT54S

L1: 68µH TOKO D52LC

L2: 33µF TOKO D52LC

D1

–8V

10mA

COUT2

1µF

D2

8V

10mA

909k

10k

COUT3

1µF

34661 TA05a

+8V OUTPUT

10V/DIV

–8V OUTPUT

10V/DIV

CTRL2

5V/DIV

VIN = 3.6V

+8V/10mA

–8V/10mA

2ms/DIV

34661 TA05c

Conversion Efficiency

84

VIN = 3.6V

10 LEDs

82 +8V/10mA

–8V/10mA

80

78

76

74

72

0

24

6

8 10 12

LED CURRENT (mA)

34661 TA05b

34661f

18

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