Voltage Regulators - Switching Regulators

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LT384x Synchronous Regulator Controllers

Analog Devices Inc. LT384x Synchronous Regulator Controllers are high voltage step-down controllers capable of operating from a 2.5V to 60V supply. The LT384x has low quiescent current. When configured for user-selectable Burst Mode operation, the current helps extend run time in battery-powered systems by increasing efficiency at light loads. The LT384x from Analog Devices uses a constant frequency, current-mode architecture. High current applications are possible with large N-channel gate drivers capable of driving multiple low R_DS(ON) MOSFETs.

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Part #

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840EFE#PBF
Analog Devices
1: $17.31
940In Stock

Mfr. Part #
LT3840EFE#PBF

Mouser Part #
584-LT3840EFE#PBF

Analog Devices

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

Learn More

Datasheet

940In Stock

$17.31

$13.58

$12.33

$11.85

View

Min.: 1
Mult.: 1

SMD/SMT

TSSOP-EP-28

Buck, Inverting

1.25 V to 60 V

20 A

1 Output

6 uA

1 MHz

- 40 C

+ 125 C

LT3840

Tube

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840EUFE#PBF
Analog Devices
1: $16.70
1,365In Stock

Mfr. Part #
LT3840EUFE#PBF

Mouser Part #
584-LT3840EUFE#PBF

Analog Devices

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

Learn More

Datasheet

1,365In Stock

$16.70

$13.08

$11.48

$11.09

View

Min.: 1
Mult.: 1

SMD/SMT

QFN-38

Buck, Inverting

1.25 V to 60 V

20 A

1 Output

6 uA

1 MHz

- 40 C

+ 125 C

LT3840

Tube

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840HFE#PBF
Analog Devices
1: $19.32
418In Stock

Mfr. Part #
LT3840HFE#PBF

Mouser Part #
584-LT3840HFE#PBF

Analog Devices

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

Learn More

Datasheet

418In Stock

$19.32

$14.24

$12.30

$11.76

View

Min.: 1
Mult.: 1

SMD/SMT

TSSOP-EP-28

Buck, Inverting

1.25 V to 60 V

20 A

1 Output

6 uA

1 MHz

- 40 C

+ 150 C

LT3840

Tube

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840IFE#TRPBF
Analog Devices
1: $18.55
1,770In Stock

Mfr. Part #
LT3840IFE#TRPBF

Mouser Part #
584-LT3840IFE#TRPBF

Analog Devices

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

Learn More

Datasheet

1,770In Stock

Cut Tape

$18.55

$14.53

$13.52

$12.43

View

Reel

$10.70

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

SMD/SMT

TSSOP-EP-28

Buck, Inverting

1.25 V to 60 V

20 A

1 Output

6 uA

1 MHz

- 40 C

+ 125 C

LT3840

Reel, Cut Tape, MouseReel

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840EFE#TRPBF
Analog Devices
1: $17.31
2,127In Stock

Mfr. Part #
LT3840EFE#TRPBF

Mouser Part #
584-LT3840EFE#TRPBF

Analog Devices

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

Learn More

Datasheet

2,127In Stock

Cut Tape

$17.31

$13.58

$12.66

$11.62

View

Reel

$10.04

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

SMD/SMT

TSSOP-EP-28

Buck, Inverting

1.25 V to 60 V

20 A

1 Output

1 MHz

- 40 C

+ 125 C

LT3840

Reel, Cut Tape, MouseReel

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840IFE#PBF
Analog Devices
1: $18.33
238In Stock

Mfr. Part #
LT3840IFE#PBF

Mouser Part #
584-LT3840IFE#PBF

Analog Devices

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

Learn More

Datasheet

238In Stock

$18.33

$12.74

$11.62

$11.20

View

Min.: 1
Mult.: 1

SMD/SMT

TSSOP-EP-28

Buck, Inverting

1.25 V to 60 V

20 A

1 Output

6 uA

1 MHz

- 40 C

+ 125 C

LT3840

Tube

Switching Voltage Regulators Hi V, C Mode Sw Reg Cntr w/ Progmable Op

LT3844EFE#PBF
Analog Devices
1: $14.43
313In Stock

Mfr. Part #
LT3844EFE#PBF

Mouser Part #
584-LT3844EFE#PBF

Analog Devices

Switching Voltage Regulators Hi V, C Mode Sw Reg Cntr w/ Progmable Op

Learn More

Datasheet

313In Stock

$14.43

$11.26

$9.62

$9.27

View

Min.: 1
Mult.: 1

SMD/SMT

TSSOP-16

Boost, Buck, Inverting, SEPIC

36 V

5 A

1 Output

10 uA

100 kHz to 500 kHz

- 40 C

+ 125 C

LT3844

Tube

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

LT3845AMPFE#PBF
Analog Devices
1: $43.93
355In Stock
380Expected 2026-12-21

Mfr. Part #
LT3845AMPFE#PBF

Mouser Part #
584-LT3845AMPFE#PBF

Analog Devices

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

Learn More

Datasheet

355In Stock

380Expected 2026-12-21

$43.93

$35.51

$31.16

$30.27

View

Min.: 1
Mult.: 1

SMD/SMT

TSSOP-16

Buck

36 V

15 A

1 Output

120 uA

100 kHz to 500 kHz

- 55 C

+ 125 C

LT3845A

Tube

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

LT3845MPFE#PBF
Analog Devices
1: $43.93
108In Stock

Mfr. Part #
LT3845MPFE#PBF

Mouser Part #
584-LT3845MPFE#PBF

Analog Devices

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

Learn More

Datasheet

108In Stock

$43.93

$35.51

$31.16

$30.27

View

Min.: 1
Mult.: 1

SMD/SMT

TSSOP-16

Buck

36 V

10 A

1 Output

120 uA

100 kHz to 500 kHz

- 55 C

+ 125 C

LT3845

Tube

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840IUFE#PBF
Analog Devices
1: $17.41
2In Stock

Mfr. Part #
LT3840IUFE#PBF

Mouser Part #
584-LT3840IUFE#PBF

Analog Devices

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

Learn More

Datasheet

2In Stock

$17.41

$13.65

$12.01

$11.56

View

Min.: 1
Mult.: 1

SMD/SMT

QFN-38

Buck, Inverting

1.25 V to 60 V

20 A

1 Output

6 uA

1 MHz

- 40 C

+ 125 C

LT3840

Tube

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840MPFE#PBF
Analog Devices
1: $42.83
19In Stock

Mfr. Part #
LT3840MPFE#PBF

Mouser Part #
584-LT3840MPFE#PBF

Analog Devices

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

Learn More

Datasheet

19In Stock

$42.83

$34.57

$31.26

$29.58

View

Min.: 1
Mult.: 1

SMD/SMT

TSSOP-EP-28

Buck, Inverting

1.25 V to 60 V

20 A

1 Output

6 uA

1 MHz

- 55 C

+ 150 C

LT3840

Tube

Switching Voltage Regulators Hi V, C Mode Sw Reg Cntr w/ Progmable Op

LT3844IFE#PBF
Analog Devices
1: $17.50
33In Stock
95Expected 2026-08-19

Mfr. Part #
LT3844IFE#PBF

Mouser Part #
584-LT3844IFE#PBF

Analog Devices

Switching Voltage Regulators Hi V, C Mode Sw Reg Cntr w/ Progmable Op

Learn More

Datasheet

33In Stock

95Expected 2026-08-19

$17.50

$13.74

$11.78

$11.38

View

Min.: 1
Mult.: 1

SMD/SMT

TSSOP-16

Boost, Buck, Inverting, SEPIC

36 V

5 A

1 Output

10 uA

100 kHz to 500 kHz

- 40 C

+ 125 C

LT3844

Tube

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

LT3845AIFE#TRPBF
Analog Devices
1: $18.98
18In Stock
2,500Expected 2026-10-02

Mfr. Part #
LT3845AIFE#TRPBF

Mouser Part #
584-LT3845AIFE#TRPBF

Analog Devices

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

Learn More

Datasheet

18In Stock

2,500Expected 2026-10-02

Cut Tape

$18.98

$14.92

$13.64

$12.54

View

Reel

$11.00

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

TSSOP-16

Buck

36 V

15 A

1 Output

120 uA

100 kHz to 500 kHz

- 40 C

+ 125 C

LT3845A

Reel, Cut Tape, MouseReel

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

LT3845EN#PBF
Analog Devices
1: $16.07
1In Stock

Mfr. Part #
LT3845EN#PBF

Mouser Part #
584-LT3845EN#PBF

Analog Devices

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

Learn More

Datasheet

1In Stock

$16.07

$12.59

$11.94

$10.45

View

Min.: 1
Mult.: 1

Through Hole

PDIP-16

Buck

36 V

10 A

1 Output

120 uA

100 kHz to 500 kHz

- 40 C

+ 125 C

LT3845

Tube

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

LT3845IFE#PBF
Analog Devices
1: $18.94
75In Stock
950Expected 2027-01-26

Mfr. Part #
LT3845IFE#PBF

Mouser Part #
584-LT3845IFE#PBF

Analog Devices

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

Learn More

Datasheet

75In Stock

950Expected 2027-01-26

$18.94

$14.90

$12.82

$12.38

View

Min.: 1
Mult.: 1

SMD/SMT

TSSOP-16

Buck

36 V

10 A

1 Output

120 uA

100 kHz to 500 kHz

- 40 C

+ 125 C

LT3845

Tube

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

LT3845AEFE#TRPBF
Analog Devices
1: $16.32
2,481Expected 2026-11-03

Mfr. Part #
LT3845AEFE#TRPBF

Mouser Part #
584-LT3845AEFE#TRPBF

Analog Devices

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

Learn More

Datasheet

2,481Expected 2026-11-03

Cut Tape

$16.32

$12.77

$11.89

$10.92

View

Reel

$9.69

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

TSSOP-16

Buck

36 V

15 A

1 Output

100 kHz to 500 kHz

- 40 C

+ 125 C

LT3845A

Reel, Cut Tape, MouseReel

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

LT3845EFE#PBF
Analog Devices
1: $16.65
2,851On Order

Mfr. Part #
LT3845EFE#PBF

Mouser Part #
584-LT3845EFE#PBF

Analog Devices

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

Learn More

Datasheet

2,851On Order

$16.65

$13.03

$11.45

$10.94

View

Min.: 1
Mult.: 1

SMD/SMT

TSSOP-16

Buck

36 V

10 A

1 Output

120 uA

100 kHz to 500 kHz

- 40 C

+ 125 C

LT3845

Tube

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

LT3845AEFE#PBF
Analog Devices
1: $16.32
1,050On Order

Mfr. Part #
LT3845AEFE#PBF

Mouser Part #
584-LT3845AEFE#PBF

Analog Devices

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

Learn More

Datasheet

1,050On Order

$16.32

$12.77

$10.94

$10.57

Min.: 1
Mult.: 1
Max.: 100

SMD/SMT

TSSOP-16

Buck

36 V

15 A

1 Output

120 uA

100 kHz to 500 kHz

- 40 C

+ 125 C

LT3845A

Tube

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

LT3845AIFE#PBF
Analog Devices
1: $18.60
552On Order

Mfr. Part #
LT3845AIFE#PBF

Mouser Part #
584-LT3845AIFE#PBF

Analog Devices

Switching Voltage Regulators Hi V Sync C Mode Buck Cntr w/ Adj Operat

Learn More

Datasheet

552On Order

$18.60

$14.63

$12.57

$12.15

View

Min.: 1
Mult.: 1

SMD/SMT

TSSOP-16

Buck

36 V

15 A

1 Output

120 uA

100 kHz to 500 kHz

- 40 C

+ 125 C

LT3845A

Tube

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840EUFE#TRPBF
Analog Devices
2,500: $9.78
Non-Stocked Lead-Time 25 Weeks

Mfr. Part #
LT3840EUFE#TRPBF

Mouser Part #
584-LT3840EUFE#TRPBF

Analog Devices

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Reel

$9.78

Quote

Min.: 2,500
Mult.: 2,500

: 2,500

SMD/SMT

QFN-38

Buck, Inverting

1.25 V to 60 V

20 A

1 Output

1 MHz

- 40 C

+ 125 C

LT3840

Reel

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840HFE#TRPBF
Analog Devices
2,000: $11.49
Non-Stocked Lead-Time 25 Weeks

Mfr. Part #
LT3840HFE#TRPBF

Mouser Part #
584-LT3840HFE#TRPBF

Analog Devices

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Reel

$11.49

Quote

Min.: 2,000
Mult.: 2,000

: 2,000

SMD/SMT

TSSOP-EP-28

Buck, Inverting

1.25 V to 60 V

20 A

1 Output

1 MHz

- 40 C

+ 150 C

LT3840

Reel

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840IUFE#TRPBF
Analog Devices
2,500: $10.11
Non-Stocked Lead-Time 14 Weeks

Mfr. Part #
LT3840IUFE#TRPBF

Mouser Part #
584-LT3840IUFE#TRPBF

Analog Devices

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$10.11

Min.: 2,500
Mult.: 2,500

: 2,500

SMD/SMT

QFN-38

Buck, Inverting

1.25 V to 60 V

20 A

1 Output

1 MHz

- 40 C

+ 125 C

LT3840

Reel

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840MPFE#TRPBF
Analog Devices
2,000: $27.53
Non-Stocked Lead-Time 14 Weeks

Mfr. Part #
LT3840MPFE#TRPBF

Mouser Part #
584-LT3840MPFE#TRPBF

Analog Devices

Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$27.53

Min.: 2,000
Mult.: 2,000

: 2,000

SMD/SMT

TSSOP-EP-28

Buck, Inverting

1.25 V to 60 V

20 A

1 Output

1 MHz

- 55 C

+ 150 C

LT3840

Reel

Switching Voltage Regulators Hi V, C Mode Sw Reg Cntr w/ Progmable Op

LT3844EFE#TRPBF
Analog Devices
2,500: $8.25
Non-Stocked Lead-Time 14 Weeks

Mfr. Part #
LT3844EFE#TRPBF

Mouser Part #
584-LT3844EFE#TRPBF

Analog Devices

Switching Voltage Regulators Hi V, C Mode Sw Reg Cntr w/ Progmable Op

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$8.25

Min.: 2,500
Mult.: 2,500

: 2,500

SMD/SMT

TSSOP-16

Boost, Buck, Inverting, SEPIC

36 V

5 A

1 Output

100 kHz to 500 kHz

- 40 C

+ 125 C

LT3844

Reel

Switching Voltage Regulators Hi V, C Mode Sw Reg Cntr w/ Progmable Op

LT3844IFE#TRPBF
Analog Devices
2,500: $10.17
Non-Stocked Lead-Time 14 Weeks

Mfr. Part #
LT3844IFE#TRPBF

Mouser Part #
584-LT3844IFE#TRPBF

Analog Devices

Switching Voltage Regulators Hi V, C Mode Sw Reg Cntr w/ Progmable Op

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$10.17

Min.: 2,500
Mult.: 2,500

: 2,500

SMD/SMT

TSSOP-16

Boost, Buck, Inverting, SEPIC

36 V

5 A

1 Output

100 kHz to 500 kHz

- 40 C

+ 125 C

LT3844

Reel

LT384x Synchronous Regulator Controllers

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