LT3581IMSE-TRPBF 데이터 시트보기 (PDF) - Linear Technology

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LT3581IMSE-TRPBF

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

Linear Technology 

LT3581

TYPICAL APPLICATIONS

High Efficiency, VFD (Vacuum Fluorescent Display) Power Supply Switches at 2MHz to Avoid AM Band

VIN

9V TO 16V

C1

2.2µF

DANGER HIGH VOLTAGE! OPERATION BY HIGH VOLTAGE TRAINED PERSONNEL ONLY

C5

2.2µF

D7

L1

10µH

C4

2.2µF

D2

D1

D6

C7

D5

2.2µF

D4

C6

D3

2.2µF

M1*

VOUT2

97V

90mA (VIN = 9V)

140mA (VIN = 12V)

180mA (VIN = 16V)

VOUT1

65V

60mA (VIN = 9V)

70mA (VIN = 12V)

90mA (VIN = 16V)

32.6k

10k

43.2k

SW1 SW2

C2

2.2µF

VIN

FB

365k

100k

FAULT

GATE

SHDN

CLKOUT

RT LT3581 VC

SYNC

SS

GND

100pF

0.47µF

8.06k

D9*

10V

D8*

VIN

24k

1nF

C3

2.2µF

3581 TA04a

C1: 2.2µF, 25V, X7R, 1206

C2 TO C7: 2.2µF, 50V, X7R, 1206

D1 TO D7: CENTRAL SEMI SOD123F

D8: CENTRAL SEMI CMDSH-3TR

D9: CENTRAL SEMI CMHZ5240B-LTZ

L1: TAIYO YUDEN NR6045T100M

M1: VISHAY SILICONIX SI7611DN

*OPTIONAL,

FOR OUTPUT SHORT-CIRCUIT

PROTECTION

Transient Response with 60mA to 140mA to 60mA

Load Step on VOUT2 (VIN = 12V)

VOUT

AC-COUPLED

2V/DIV

IL

0.5A/DIV

ILOAD

0.1A/DIV

100µs/DIV

3581 TA04b

VOUT2

50V/DIV

VOUT1

50V/DIV

IL

0.5A/DIV

VSS

1V/DIV

Start-Up Waveforms

100ms/DIV

3581 TA04c

Efficiency and Power Loss at VIN = 12V

90

3.0

85

2.5

80

2.0

75

1.5

70

0

1.0

4

8

12

16

20

TOTAL OUTPUT POWER (W)

3581 TA04d

For more information www.linear.com/LT3581

3581fb

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