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

LT3840IFE#PBF
Analog Devices
1: ฿465.40
563In Stock

Mfr. Part No.
LT3840IFE#PBF

Mouser Part No
584-LT3840IFE#PBF

Analog Devices

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

Learn More

Datasheet

563In Stock

฿465.40

฿353.60

฿338.65

฿298.35

฿283.73

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: ฿419.25
1,490In Stock

Mfr. Part No.
LT3840EUFE#PBF

Mouser Part No
584-LT3840EUFE#PBF

Analog Devices

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

Learn More

Datasheet

1,490In Stock

฿419.25

฿318.50

฿305.18

฿268.78

฿255.78

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: ฿491.73
435In Stock

Mfr. Part No.
LT3840HFE#PBF

Mouser Part No
584-LT3840HFE#PBF

Analog Devices

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

Learn More

Datasheet

435In Stock

฿491.73

฿373.75

฿357.83

฿315.58

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

- 40 C

+ 150 C

LT3840

Tube

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

LT3840MPFE#PBF
Analog Devices
1: ฿973.70
189In Stock

Mfr. Part No.
LT3840MPFE#PBF

Mouser Part No
584-LT3840MPFE#PBF

Analog Devices

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

Learn More

Datasheet

189In Stock

฿973.70

฿822.90

฿785.53

฿702.98

Quote

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 Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840IFE#TRPBF
Analog Devices
1: ฿465.08
1,795In Stock

Mfr. Part No.
LT3840IFE#TRPBF

Mouser Part No
584-LT3840IFE#TRPBF

Analog Devices

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

Learn More

Datasheet

1,795In Stock

Cut Tape

฿465.08

฿353.28

฿338.65

฿298.35

View

Reel

฿283.73

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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#PBF
Analog Devices
1: ฿436.15
1,005In Stock

Mfr. Part No.
LT3840EFE#PBF

Mouser Part No
584-LT3840EFE#PBF

Analog Devices

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

Learn More

Datasheet

1,005In Stock

฿436.15

฿373.75

฿317.85

฿279.83

฿266.18

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: ฿388.05
611In Stock

Mfr. Part No.
LT3844EFE#PBF

Mouser Part No
584-LT3844EFE#PBF

Analog Devices

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

Learn More

Datasheet

611In Stock

฿388.05

฿301.93

฿287.95

฿249.93

฿238.55

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, C Mode Sw Reg Cntr w/ Progmable Op

LT3844IFE#PBF
Analog Devices
1: ฿441.03
190In Stock

Mfr. Part No.
LT3844IFE#PBF

Mouser Part No
584-LT3844IFE#PBF

Analog Devices

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

Learn More

Datasheet

190In Stock

฿441.03

฿334.75

฿321.10

฿282.75

฿269.10

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: ฿1,001.33
153In Stock

Mfr. Part No.
LT3845AMPFE#PBF

Mouser Part No
584-LT3845AMPFE#PBF

Analog Devices

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

Learn More

Datasheet

153In Stock

฿1,001.33

฿846.30

฿808.28

฿722.80

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

LT3845EFE#PBF
Analog Devices
1: ฿437.45
1,329In Stock

Mfr. Part No.
LT3845EFE#PBF

Mouser Part No
584-LT3845EFE#PBF

Analog Devices

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

Learn More

Datasheet

1,329In Stock

฿437.45

฿345.48

฿329.55

฿286.00

฿273.33

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

LT3845IFE#PBF
Analog Devices
1: ฿481.00
611In Stock

Mfr. Part No.
LT3845IFE#PBF

Mouser Part No
584-LT3845IFE#PBF

Analog Devices

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

Learn More

Datasheet

611In Stock

฿481.00

฿365.30

฿350.35

฿308.43

฿293.48

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: ฿437.45
248In Stock
190Expected 2/16/2026

Mfr. Part No.
LT3845AEFE#PBF

Mouser Part No
584-LT3845AEFE#PBF

Analog Devices

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

Learn More

Datasheet

248In Stock

190Expected 2/16/2026

฿437.45

฿345.48

฿329.55

฿286.00

฿273.33

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 Hi V Sync C Mode Buck Cntr w/ Adj Operat

LT3845AEFE#TRPBF
Analog Devices
1: ฿437.45
1,695In Stock

Mfr. Part No.
LT3845AEFE#TRPBF

Mouser Part No
584-LT3845AEFE#TRPBF

Analog Devices

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

Learn More

Datasheet

1,695In Stock

Cut Tape

฿437.45

฿345.48

฿329.55

฿286.00

฿273.33

Reel

฿273.33

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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

LT3845AIFE#PBF
Analog Devices
1: ฿471.90
260In Stock

Mfr. Part No.
LT3845AIFE#PBF

Mouser Part No
584-LT3845AIFE#PBF

Analog Devices

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

Learn More

Datasheet

260In Stock

฿471.90

฿358.48

฿343.53

฿302.58

฿287.95

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 Hi V Sync C Mode Buck Cntr w/ Adj Operat

LT3845AIFE#TRPBF
Analog Devices
1: ฿471.90
1,547In Stock

Mfr. Part No.
LT3845AIFE#TRPBF

Mouser Part No
584-LT3845AIFE#TRPBF

Analog Devices

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

Learn More

Datasheet

1,547In Stock

Cut Tape

฿471.90

฿358.48

฿343.53

฿302.58

฿287.95

Reel

฿287.95

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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

LT3845MPFE#PBF
Analog Devices
1: ฿1,001.33
118In Stock

Mfr. Part No.
LT3845MPFE#PBF

Mouser Part No
584-LT3845MPFE#PBF

Analog Devices

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

Learn More

Datasheet

118In Stock

฿1,001.33

฿846.30

฿808.28

฿722.80

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: ฿438.43
2In Stock

Mfr. Part No.
LT3840IUFE#PBF

Mouser Part No
584-LT3840IUFE#PBF

Analog Devices

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

Learn More

Datasheet

2In Stock

฿438.43

฿333.13

฿319.15

฿281.13

฿267.48

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 Hi V Sync C Mode Buck Cntr w/ Adj Operat

LT3845EN#PBF
Analog Devices
1: ฿430.30
39In Stock

Mfr. Part No.
LT3845EN#PBF

Mouser Part No
584-LT3845EN#PBF

Analog Devices

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

Learn More

Datasheet

39In Stock

฿430.30

฿339.95

฿324.03

฿281.45

฿268.78

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 Wide In Rng Sync Reg Cntr w/ Acc C Lim

LT3840EFE#TRPBF
Analog Devices
1: ฿435.83
1,250Expected 2/16/2026

Mfr. Part No.
LT3840EFE#TRPBF

Mouser Part No
584-LT3840EFE#TRPBF

Analog Devices

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

Learn More

Datasheet

1,250Expected 2/16/2026

Cut Tape

฿435.83

฿331.18

฿317.53

฿279.50

฿265.85

Reel

฿265.85

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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

LT3840EUFE#TRPBF
Analog Devices
2,500: ฿255.78
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LT3840EUFE#TRPBF

Mouser Part No
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 10 Weeks

Reel

฿255.78

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

Reel: 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: ฿299.98
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LT3840HFE#TRPBF

Mouser Part No
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 10 Weeks

Reel

฿299.98

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

Reel: 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: ฿267.48
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LT3840IUFE#TRPBF

Mouser Part No
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 10 Weeks

Reel

฿267.48

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

Reel: 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: ฿702.98
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LT3840MPFE#TRPBF

Mouser Part No
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 10 Weeks

Reel

฿702.98

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

Reel: 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: ฿238.55
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LT3844EFE#TRPBF

Mouser Part No
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 10 Weeks

Reel

฿238.55

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

Reel: 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: ฿269.10
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LT3844IFE#TRPBF

Mouser Part No
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 10 Weeks

Reel

฿269.10

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

Reel: 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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