ADI-LT3800 high voltage DC/DC step-down controller reference design

ADI-LT3800 high voltage DC/DC step-down controller reference design

The Analog Devices LT3800 in this design will operate from a Vin range of 20V – 55V and outputs 12V @ 6.25A (75W). A soft-start feature controls the output voltage slew rate at start-up, reducing current surges and voltage overshoots. The modes of operation, Burst Mode, Discontinuous Current Mode and Continuous Current Mode, are jumper selectable. Both Burst Mode and Discontinuous Current Mode increase the efficiency at light loads. Continuous Current Mode will maintain a constant switching frequency regardless of the load current required.

This design is suitable for a wide range of industrial control systems, 12V/42V automotive, and 48V Telecom power applications

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Incorporated Products

IMAGE

MANUFACTURER PART NUMBER

DESCRIPTION

QUANTITY

VIEW DETAILS

1

LT3800EFE#PBF

IC REG CTRLR BUCK 16TSSOP

1

2

SI7850DP-T1-GE3

MOSFET N-CH 60V 6.2A PPAK SO-8

1

3

SI7370DP-T1-GE3

MOSFET N-CH 60V 9.6A PPAK SO-8

1

4

MAL214699807E3

VARIANT 1

1

5

CRCW08051M00FKEB

GENERAL

1

6

T59EE156M063C0100

VARIANT 1

2

7

C2012X7R2A104K125AA

VARIANT 1

1

8

CRCW040282K5FKED

GENERAL

2

9

CRCW040214K7FKED

GENERAL

1

10

CRCW04020000Z0EDHP

GENERAL

1

11

CRCW0402200KFKED

GENERAL

1

12

CRCW06035M10JNEA

GENERAL

1

13

CRCW0402130KFKEDHP

GENERAL

1

14

VJ0402Y152KXACW1BC

VARIANT 1

1

15

VJ0402Y681JXACW1BC

VARIANT 1

1

16

VJ0402A121JXACW1BC

VARIANT 1

1

17

VJ0805Y105KXJTW1BC

VARIANT 1

1

18

VJ0603Y224KXJCW1BC

VARIANT 1

1

19

IHLP6767GZER150M11

VARIANT 1

1

20

WSL2512R0150FEA18

GENERAL

1

21

BAS19-E3-08

VARIANT 1

1

22

1N4448WS-G3-08

VARIANT 1

1

23

SS16-M3/61T

VARIANT 2

1

24

MAL214699512E3

1

25

T55B226M016C0070

VARIANT 1

2

26

VJ1206A471KXBCW1BC

VARIANT 1

1

LT3800EFE#PBF

IC REG CTRLR BUCK 16TSSOP

Quantity: 1

SI7850DP-T1-GE3

MOSFET N-CH 60V 6.2A PPAK SO-8

Quantity: 1

SI7370DP-T1-GE3

MOSFET N-CH 60V 9.6A PPAK SO-8

Quantity: 1

MAL214699807E3

VARIANT 1

Quantity: 1

CRCW08051M00FKEB

GENERAL

Quantity: 1

T59EE156M063C0100

VARIANT 1

Quantity: 2

C2012X7R2A104K125AA

VARIANT 1

Quantity: 1

CRCW040282K5FKED

GENERAL

Quantity: 2

CRCW040214K7FKED

GENERAL

Quantity: 1

CRCW04020000Z0EDHP

GENERAL

Quantity: 1

CRCW0402200KFKED

GENERAL

Quantity: 1

CRCW06035M10JNEA

GENERAL

Quantity: 1

CRCW0402130KFKEDHP

GENERAL

Quantity: 1

VJ0402Y152KXACW1BC

VARIANT 1

Quantity: 1

VJ0402Y681JXACW1BC

VARIANT 1

Quantity: 1

VJ0402A121JXACW1BC

VARIANT 1

Quantity: 1

VJ0805Y105KXJTW1BC

VARIANT 1

Quantity: 1

VJ0603Y224KXJCW1BC

VARIANT 1

Quantity: 1

IHLP6767GZER150M11

VARIANT 1

Quantity: 1

WSL2512R0150FEA18

GENERAL

Quantity: 1

BAS19-E3-08

VARIANT 1

Quantity: 1

1N4448WS-G3-08

VARIANT 1

Quantity: 1

SS16-M3/61T

VARIANT 2

Quantity: 1

MAL214699512E3

Quantity: 1

T55B226M016C0070

VARIANT 1

Quantity: 2

VJ1206A471KXBCW1BC

VARIANT 1

Quantity: 1

About this Schematic

Created By

Cody Walseth

Last Updated

2023-12-26 20:56

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