Voltage Regulators - Switching Regulators

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LT8609/A/B Synchronous Step-Down Regulators

Analog Devices Inc. LT8609/A/B Synchronous Step-Down Regulators are compact, high efficiency, high speed, and consume 1.7µA of non-switching quiescent current. The LT8609/A/B Regulators deliver 3A of continuous current. The devices offer a Burst Mode operation enabling high efficiency down to very low output currents while keeping the output ripple below 10mVP-P.

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Part #

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609AHMSE16#PBF
Analog Devices
1: $13.26
249In Stock
148Expected 31/8/2026

Mfr. Part No.
LT8609AHMSE16#PBF

Mouser Part No
584-LT8609AHMSE16PBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

249In Stock

148Expected 31/8/2026

$13.26

$10.32

$9.33

$8.73

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-16

Buck

Adjustable

2 A

1 Output

1.7 uA

200 kHz to 2.2 MHz

- 40 C

+ 150 C

LT8609

Tube

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609AJDDM#PBF
Analog Devices
1: $13.37
842In Stock

Mfr. Part No.
LT8609AJDDM#PBF

Mouser Part No
584-LT8609AJDDM#PBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

842In Stock

$13.37

$10.42

$9.68

$8.79

View

Min.: 1
Mult.: 1

SMD/SMT

DFN-10

Buck

Adjustable

3 A

1 Output

2.5 uA

200 kHz to 2.2 MHz

- 40 C

+ 150 C

LT8609

Tube

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609AJDDM#TRPBF
Analog Devices
1: $13.37
1,904In Stock
2,500Expected 24/8/2026

Mfr. Part No.
LT8609AJDDM#TRPBF

Mouser Part No
584-LT8609AJDDM#TR

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

1,904In Stock

2,500Expected 24/8/2026

Cut Tape

$13.37

$10.42

$9.68

$8.87

View

Reel

$8.06

MouseReel Available

Min.: 1
Mult.: 1
Max.: 1,000

: 2,500

SMD/SMT

DFN-10

Buck

Adjustable

3 A

1 Output

2.5 uA

200 kHz to 2.2 MHz

- 40 C

+ 150 C

LT8609

Reel, Cut Tape, MouseReel

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609BEMSE#PBF
Analog Devices
1: $10.89
607In Stock

Mfr. Part No.
LT8609BEMSE#PBF

Mouser Part No
584-LT8609BEMSE#PBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

607In Stock

$10.89

$8.43

$7.43

$7.13

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-10

Buck

Adjustable

2 A

1 Output

2.5 uA

200 kHz to 2.2 MHz

- 40 C

+ 125 C

LT8609

Tube

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609BIMSE#PBF
Analog Devices
1: $11.83
300In Stock
50On Order

Mfr. Part No.
LT8609BIMSE#PBF

Mouser Part No
584-LT8609BIMSE#PBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

300In Stock

50On Order

$11.83

$9.18

$8.11

$7.78

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-10

Buck

Adjustable

2 A

1 Output

2.5 uA

200 kHz to 2.2 MHz

- 40 C

+ 125 C

LT8609

Tube

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609EMSE#TRPBF
Analog Devices
1: $11.27
1,866In Stock
4,750Expected 31/8/2026

Mfr. Part No.
LT8609EMSE#TRPBF

Mouser Part No
584-LT8609EMSE#TRPBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

1,866In Stock

4,750Expected 31/8/2026

Cut Tape

$11.27

$8.73

$8.11

$7.40

View

Reel

$6.68

MouseReel Available

Min.: 1
Mult.: 1
Max.: 2,000

: 2,500

SMD/SMT

MSOP-10

Buck

Adjustable

2 A

1 Output

1.7 uA

200 kHz to 2.2 MHz

- 40 C

+ 125 C

LT8609

Reel, Cut Tape, MouseReel

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609HMSE#PBF
Analog Devices
1: $13.26
1,771In Stock

Mfr. Part No.
LT8609HMSE#PBF

Mouser Part No
584-LT8609HMSE#PBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

1,771In Stock

$13.26

$10.32

$9.14

$8.77

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-10

Buck

Adjustable

2 A

1 Output

2.5 uA

200 kHz to 2.2 MHz

- 40 C

+ 150 C

LT8609

Tube

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609IMSE#PBF
Analog Devices
1: $12.27
1,402In Stock
5,950On Order

Mfr. Part No.
LT8609IMSE#PBF

Mouser Part No
584-LT8609IMSE#PBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

1,402In Stock

5,950On Order

$12.27

$9.53

$8.42

$8.06

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-10

Buck

Adjustable

2 A

1 Output

2.5 uA

200 kHz to 2.2 MHz

- 40 C

+ 125 C

LT8609

Tube

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609SEV#TRPBF
Analog Devices
1: $12.04
2,004In Stock
10,000On Order

Mfr. Part No.
LT8609SEV#TRPBF

Mouser Part No
584-LT8609SEV#TRPBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

2,004In Stock

10,000On Order

Cut Tape

$12.04

$9.34

$8.68

$7.93

View

Reel

$6.99

MouseReel Available

Min.: 1
Mult.: 1
Max.: 2,500

: 2,500

SMD/SMT

LQFN-16

Buck

5 V

2 A, 3 A

1 Output

2.5 uA

2 MHz

- 40 C

+ 125 C

LT8609

Reel, Cut Tape, MouseReel

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609SIV#TRPBF
Analog Devices
1: $13.08
2,329In Stock
5,000Expected 5/1/2027

Mfr. Part No.
LT8609SIV#TRPBF

Mouser Part No
584-LT8609SIV#TRPBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

2,329In Stock

5,000Expected 5/1/2027

Cut Tape

$13.08

$10.19

$9.47

$8.66

View

Reel

$7.66

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

LQFN-16

Buck

5 V

2 A, 3 A

1 Output

2.5 uA

2 MHz

- 40 C

+ 125 C

LT8609

Reel, Cut Tape, MouseReel

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609AEMSE16#PBF
Analog Devices
1: $11.00
70In Stock

Mfr. Part No.
LT8609AEMSE16#PBF

Mouser Part No
584-8609AEMSE16#PBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

70In Stock

$11.00

$8.53

$7.68

$7.17

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-16

Buck

3.3 V, 5 V

3 A

1 uA

2 MHz

- 40 C

+ 125 C

LT8609

Tube

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609AHDDM#PBF
Analog Devices
1: $14.52
157In Stock

Mfr. Part No.
LT8609AHDDM#PBF

Mouser Part No
584-LT8609AHDDM#PBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

157In Stock

$14.52

$11.36

$10.55

$9.59

View

Min.: 1
Mult.: 1

SMD/SMT

DFN-10

Buck

Adjustable

2 A

1 Output

1.7 uA

200 kHz to 2.2 MHz

- 40 C

+ 150 C

LT8609

Tube

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609AJDDM-5#PBF
Analog Devices
1: $13.37
214In Stock

Mfr. Part No.
LT8609AJDDM-5#PBF

Mouser Part No
584-LT8609AJDDM-5

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

214In Stock

$13.37

$10.42

$9.68

$8.79

View

Min.: 1
Mult.: 1

SMD/SMT

DFN-10

Buck

5 V

3 A

1 Output

2.5 uA

200 kHz to 2.2 MHz

- 40 C

+ 150 C

LT8609

Tube

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609AJMSE#PBF
Analog Devices
1: $11.72
90In Stock

Mfr. Part No.
LT8609AJMSE#PBF

Mouser Part No
584-LT8609AJMSE#PBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

90In Stock

$11.72

$9.33

$9.04

$8.08

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-10

Buck

3.3 V, 5 V

3 A

1 Output

1 uA

2 MHz

- 40 C

+ 150 C

LT8609

Tube

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609AEDDM-3.3#TRPBF
Analog Devices
2,500: $6.41
Non-Stocked Lead-Time 20 Weeks

Mfr. Part No.
LT8609AEDDM-3.3#TRPBF

Mouser Part No
584-8609AEDDM33TRPBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Datasheet

Non-Stocked Lead-Time 20 Weeks

Reel

$6.41

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

: 2,500

SMD/SMT

DFN-10

1 Output

LT8609

Reel

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609AHMSE16#TRPBF
Analog Devices
2,500: $7.53
Non-Stocked Lead-Time 21 Weeks

Mfr. Part No.
LT8609AHMSE16#TRPBF

Mouser Part No
584-8609AHMSE16TRPBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

Non-Stocked Lead-Time 21 Weeks

Reel

$7.53

Quote

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

: 2,500

SMD/SMT

MSOP-16

Buck

Adjustable

2 A

1 Output

1.7 uA

200 kHz to 2.2 MHz

- 40 C

+ 150 C

LT8609

Reel

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609AJDDM-3.3#TRPBF
Analog Devices
2,500: $7.71
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
LT8609AJDDM-3.3#TRPBF

Mouser Part No
584-8609AJDDM33TRPBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$7.71

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

: 2,500

SMD/SMT

DFN-10

1 Output

LT8609

Reel

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609AHDDM#TRPBF
Analog Devices
2,500: $8.46
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
LT8609AHDDM#TRPBF

Mouser Part No
584-LT8609AHDDMTRPBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$8.46

Quote

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

: 2,500

SMD/SMT

DFN-10

Buck

Adjustable

2 A

1 Output

1.7 uA

200 kHz to 2.2 MHz

- 40 C

+ 150 C

LT8609

Reel

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609BEMSE#TRPBF
Analog Devices
2,500: $6.11
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
LT8609BEMSE#TRPBF

Mouser Part No
584-LT8609BEMSETRPBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$6.11

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

: 2,500

SMD/SMT

MSOP-10

Buck

Adjustable

2 A

1 Output

2.5 uA

200 kHz to 2.2 MHz

- 40 C

+ 125 C

LT8609

Reel

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609BIMSE#TRPBF
Analog Devices
2,500: $6.68
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
LT8609BIMSE#TRPBF

Mouser Part No
584-LT8609BIMSETRPBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$6.68

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

: 2,500

SMD/SMT

MSOP-10

Buck

Adjustable

2 A

1 Output

2.5 uA

200 kHz to 2.2 MHz

- 40 C

+ 125 C

LT8609

Reel

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

LT8609HMSE#TRPBF
Analog Devices
2,500: $7.56
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
LT8609HMSE#TRPBF

Mouser Part No
584-LT8609HMSE#TRPBF

Analog Devices

Switching Voltage Regulators 42V, 2A/3A Peak Sync Buck Reg w/ 2.5 A

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$7.56

Quote

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

: 2,500

SMD/SMT

MSOP-10

Buck

Adjustable

2 A

1 Output

1.7 uA

200 kHz to 2.2 MHz

- 40 C

+ 150 C

LT8609

Reel

LT8609/A/B Synchronous Step-Down Regulators

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