LT8580 Ver la hoja de datos (PDF) - Linear Technology

Número de pieza

componentes Descripción

Fabricante

LT8580

Boost/SEPIC/Inverting DC/DC Converter with 1A, 65V Switch, Soft-Start and Synchronization

Linear Technology 

LT8580

typical Applications

VFD (Vacuum Fluorescent Display) Power Supply Switches at 1MHz

Danger High Voltage! Operation by High Voltage Trained Personnel Only

VIN

9V TO 16V

L1

68µH

487k

D5

22Ω D4

C4

1µF

D3

22Ω D2

C2

1µF

D1

VOUT3

C5

1µF

180V

20mA*

VOUT2

C3

120V

30mA*

1µF

VOUT1

60V

60mA*

VIN

SW

698k

SHDN

FBX

CIN

LT8580

C1

1µF

1µF

SYNC

VC

RT GND SS

84.5k

0.47µF

22.1k

4.7nF

330pF

8580 TA05a

*MAX TOTAL OUTPUT POWER 3.5W

L1: WÜRTH 68µH WE-LQS 74404084680

D1-D5: DIODES, INC. DFLS1100

CIN: 1µF, 100V, 1206, X7R

C1-C5: 1µF, 100V, 1206, X7S

Efficiency and Power Loss

(VIN = 12V with Load on VOUT3)

90

960

80

880

70

800

60

720

50

640

40

560

30

EFFICIENCY 480

POWER LOSS

20

400

0 0.5 1 1.5 2 2.5 3 3.5

OUTPUT POWER (W)

8580 TA05b

Start-Up Waveforms

VOUT3

50V/DIV

VOUT2

50V/DIV

VOUT1

50V/DIV

IL1

200mA/DIV

2ms/DIV

8580 TA05c

8580f

28

For more information www.linear.com/LT8580

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