LT3580EDD-TRPBF Ver la hoja de datos (PDF) - Linear Technology

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Fabricante

LT3580EDD-TRPBF

Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization

Linear Technology 

LT3580

TYPICAL APPLICATIONS

High Voltage Positive Power Supply Uses Tiny 5.8mm × 5.8mm × 3mm Transformer and Switches at 200kHz

Danger High Voltage! Operation by High Voltage Trained Personnel Only

VIN

3.3V TO 5V

T1

1:10.4

7, 8

4.7μH

• 1 D1

5, 6 • 4

D2

VOUT

350V

4.5mA (VIN = 5V)

2.5mA (VIN = 3.3V)

C2

68nF

C1

2.2μF

VIN

SW

SHDN

GND

LT3580

RT

FB

RFB 4.22M*

SYNC

464k

VC

SS

0.47μF

10k

10nF

100pF

3580 TA05a

C1: 2.2μF, 25V, X5R, 1206

C2: TDK C3225X7R2J683M

D1: VISHAY GSD2004S DUAL DIODE CONNECTED IN SERIES

D2: ON SEMICONDUCTOR MBR0540

T1: TDK LDT565630T-041

FOR ANY VOUT BETWEEN 50V TO

350V, CHOOSE RFB ACCORDING TO

RFB

=

VOUT – 1.215

83.3μA

FOR 5V INPUT, KEEP MAXIMUM

OUTPUT POWER AT 1.58W

FOR 3.3V INPUT, KEEP MAXIMUM

OUTPUT POWER AT 0.88W

*MAY REQUIRE MULTIPLE SERIES

RESISTORS TO COMPLY WITH

MAXIMUM VOLTAGE RATINGS

Start-Up Waveforms

IPRIMARY

1A/DIV

VOUT

50V/DIV

5V INPUT

NO LOAD

2ms/DIV

Switching Waveforms

VOUT

2V/DIV

AC COUPLED

IPRIMARY

1A/DIV

5V INPUT

4.5mA LOAD

2μs/DIV

3580 TA05b

3580 TA05c

3580fg

21

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