LT3581 データシートの表示（PDF） - Linear Technology

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LT3581

3.3A Boost/Inverting DC/DC Converter with Fault Protection

Linear Technology 

LT3581

TYPICAL APPLICATIONS

2MHz, 12V SEPIC Converter Can Accept Input Voltages from 9V to 16V

VIN

9V TO 16V

L1

3.3µH

C2

2.2µF

D1

SW1 SW2

L2

• 3.3µH

VOUT

12V

1A (VIN = 9V)

1.1A (VIN = 12V)

1.3A (VIN = 16V)

C1

3.3µF

VIN LT3581 FB

SHDN

100k

FAULT

RT

GATE

CLKOUT

VC

43.2k

SYNC

SS

GND

130k

C3

10µF

100pF

0.1µF

10k

2.2nF

3581 TA06a

C1: 3.3µF, 25V, X7R, 1206

C2: 2.2µF, 50V, X7R, 1206

C3: 10µF, 25V, X7R, 1210

D1: CENTRAL SEMI CTLSH2-40M832

L1, L2: COILCRAFT MSD7342-332MLB

100

95

90

85

80

75

70

65

60

55

50

0

Efficiency

VIN = 9V

VIN = 16V

VIN = 12V

300 600 900 1200 1500

LOAD CURRENT (mA)

3581 TA06b

Line Regulation with No Load

12.000 LINE REGULATION ~0.0044%/V

11.998

11.996

11.994

11.992

11.990

8

9 10 11 12 13 14 15 16 17

VIN (V)

3581 TA06c

Load Regulation at VIN = 12

12.01

LOAD REGULATION ~0.25%/A

12.00

11.99

11.98

11.97

11.96

0

200 400 600 800 1000 1200 1400

ILOAD (mA)

3581 TA06d

30

For more information www.linear.com/LT3581

3581fb

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