LT1171I 查看數據表（PDF） - Linear Technology

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产品描述 (功能)

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LT1171I

100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators

Linear Technology 

LT1170/LT1171/LT1172

TYPICAL APPLICATIO S

Forward Converter

VIN

20V TO 30V

D1

T1

R4

C2 1 M N

D2

VIN

D3

VSW

LT1170

D4

FB

GND

VC

Q1

R3

C3

R6

330Ω

C4

R5

1Ω

L1

25µH

C1 +

2000µF

VOUT

5V, 6A

R1

3.74k

R2

1.24k

1170/1/2 TA16

High Efficiency 5V Buck Converter

VIN

+ C1

330µF

35V

VSW

VIN

LT1170

FB

VC

C6

0.02µF

C4

0.1µF

R1

680Ω

GND

C5

0.03µF

C3 +

4.7µF

TANT

D1

MBR330p

MODE LOGIC

220pF

<0.3V = NORMAL MODE

>2.5V = SHUTDOWN

OPEN = BURST MODE

VC

VIN

MODE

DIODE

LT1432

GND

D2

1N4148

10µH

3A

+

100µF

16V

OPTIONAL

OUTPUT

FILTER

L1

50µH

R2*

0.013Ω

×

VOUT

5V

+ C2 3A**

V+

390µF

16V

VLIM

VOUT

* R2 IS MADE FROM PC BOARD

COPPER TRACES.

** MAXIMUM CURRENT IS DETERMINED

BY THE CHOICE OF LT1070 FAMILY.

SEE APPLICATION SECTION.

1170/1/2 TA17

14

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