3433EFE View Datasheet(PDF) - Linear Technology

Part Name

Description

View to exact match

3433EFE

High Voltage Step-Up/Step-Down DC/DC Converter

Linear Technology 

LT3433

TYPICAL APPLICATIO S

8V-60V to 12V Converter

VIN

8V TO 60V

DS1

B160A

L1

200µH

TDK SLF12565T-221M1R0

C6

2.2µF

100V

D2

1N4148

C7

0.47µF

20V

VBST

SW_L

SW_H PWRGND

C3 330pF

(BURST)

LT3433

VIN

VOUT

BURST_EN VBIAS

R1 68k

VC

SHDN

C2 1nF

R2

20k

1%

R3

174k

1%

VFB

SS

SGND

(NO BURST)

DS2

B120A

VOUT

12V

+

C5

47µF

8V < VIN < 18V: 125mA

18V < VIN < 60V: 380mA

25V

C4

0.01µF

D1

1N4148

C6

0.1µF

20V

3433 TA04a

MODE SWITCH:

VIN H-L: 16.6V

VIN L-H: 17V

Efficiency

100

VIN = 20V

90

80

70

VIN = 20V

(BURST)

60

VIN = 8V

50

VIN = 8V

40

(BURST)

30

20

0.1

1

10

100

OUTPUT CURRENT (mA)

1000

3433 TA04b

Minimum Output Current vs VIN

500

BRIDGED

400

300

200

BUCK

100

0

0 10 20 30 40 50 60

VIN (V)

3433 TA04c

3433f

14

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