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

LT8609AEDDM-5#TRPBF
Analog Devices
1: $8.26
8,670In Stock

Mfr. Part #
LT8609AEDDM-5#TRPBF

Mouser Part #
584-LT8609AEDDM-5#TR

Analog Devices

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

Learn More

Datasheet

8,670In Stock

Cut Tape

$8.26

$6.40

$5.93

$5.42

View

Reel

$4.65

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

DFN-10

Buck

5 V

3 A

1 Output

2.5 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

LT8609AHMSE#PBF
Analog Devices
1: $9.74
3,250In Stock

Mfr. Part #
LT8609AHMSE#PBF

Mouser Part #
584-LT8609AHMSEPBF

Analog Devices

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

Learn More

Datasheet

3,250In Stock

$9.74

$7.36

$6.72

$6.00

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

LT8609EMSE#PBF
Analog Devices
1: $8.29
32,872In Stock

Mfr. Part #
LT8609EMSE#PBF

Mouser Part #
584-LT8609EMSE#PBF

Analog Devices

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

Learn More

Datasheet

32,872In Stock

$8.29

$6.42

$5.67

$5.43

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-10

Buck

Adjustable

3 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

LT8609AHDDM-5#PBF
Analog Devices
1: $10.37
290In Stock

Mfr. Part #
LT8609AHDDM-5#PBF

Mouser Part #
584-LT8609AHDDM5#PBF

Analog Devices

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

Learn More

Datasheet

290In Stock

$10.37

$8.09

$7.52

$7.06

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

LT8609AEDDM-3.3#PBF
Analog Devices
1: $8.27
1,869In Stock

Mfr. Part #
LT8609AEDDM-3.3#PBF

Mouser Part #
584-8609AEDDM-3.3PBF

Analog Devices

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

Learn More

Datasheet

1,869In Stock

$8.27

$6.40

$5.93

$5.38

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

+ 125 C

LT8609

Tube

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

LT8609AIMSE#PBF
Analog Devices
1: $9.02
2,623In Stock
6,200On Order

Mfr. Part #
LT8609AIMSE#PBF

Mouser Part #
584-LT8609AIMSE#PBF

Analog Devices

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

Learn More

Datasheet

2,623In Stock

6,200On Order

$9.02

$7.01

$6.19

$5.94

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

LT8609AIMSE16#PBF
Analog Devices
1: $8.84
1,077In Stock

Mfr. Part #
LT8609AIMSE16#PBF

Mouser Part #
584-8609AIMSE16#PBF

Analog Devices

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

Learn More

Datasheet

1,077In Stock

$8.84

$6.86

$6.17

$5.51

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-16

Buck

3.3 V, 5 V

3 A

1 Output

1 uA

2 MHz

- 40 C

+ 125 C

LT8609

Tube

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

LT8609AJMSE#TRPBF
Analog Devices
1: $9.16
2,299In Stock

Mfr. Part #
LT8609AJMSE#TRPBF

Mouser Part #
584-8609AJMSE#TRPBF

Analog Devices

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

Learn More

Datasheet

2,299In Stock

Cut Tape

$9.16

$7.12

$6.49

$6.05

View

Reel

$5.20

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

MSOP-10

Buck

Adjustable

3 A

1 Output

1 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

LT8609AJMSE16#PBF
Analog Devices
1: $9.16
713In Stock

Mfr. Part #
LT8609AJMSE16#PBF

Mouser Part #
584-8609AJMSE16#PBF

Analog Devices

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

Learn More

Datasheet

713In Stock

$9.16

$7.12

$6.39

$5.75

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-16

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-5#PBF
Analog Devices
1: $8.27
2,039In Stock

Mfr. Part #
LT8609AEDDM-5#PBF

Mouser Part #
584-LT8609AEDDM-5

Analog Devices

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

Learn More

Datasheet

2,039In Stock

$8.27

$6.54

$6.06

$5.48

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

+ 125 C

LT8609

Tube

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

LT8609AJDDM-5#TRPBF
Analog Devices
1: $9.82
1,884In Stock

Mfr. Part #
LT8609AJDDM-5#TRPBF

Mouser Part #
584-LT8609AJDDM-5#TR

Analog Devices

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

Learn More

Datasheet

1,884In Stock

Cut Tape

$9.82

$7.65

$7.11

$6.51

View

Reel

$5.60

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

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

Reel, Cut Tape, MouseReel

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

LT8609AIMSE16#TRPBF
Analog Devices
1: $8.84
2,225In Stock

Mfr. Part #
LT8609AIMSE16#TRPBF

Mouser Part #
584-8609AIMSE16TRPBF

Analog Devices

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

Learn More

Datasheet

2,225In Stock

Cut Tape

$8.84

$6.86

$6.37

$5.82

View

Reel

$5.00

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

MSOP-16

Buck

3.3 V, 5 V

3 A

1 Output

1 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

LT8609AHDDM-5#TRPBF
Analog Devices
1: $10.68
767In Stock

Mfr. Part #
LT8609AHDDM-5#TRPBF

Mouser Part #
584-LT8609AHDDM-5#TR

Analog Devices

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

Learn More

Datasheet

767In Stock

Cut Tape

$10.68

$8.34

$7.75

$7.11

View

Reel

$6.16

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

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

Reel, Cut Tape, MouseReel

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

LT8609AEMSE16#TRPBF
Analog Devices
1: $8.08
2,027In Stock

Mfr. Part #
LT8609AEMSE16#TRPBF

Mouser Part #
584-8609AEMSE16TRPBF

Analog Devices

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

Learn More

Datasheet

2,027In Stock

Cut Tape

$8.08

$6.26

$5.80

$5.30

View

Reel

$4.55

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

MSOP-16

Buck

3.3 V, 5 V

3 A

1 Output

1 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

LT8609AEDDM#TRPBF
Analog Devices
1: $8.27
4,982In Stock

Mfr. Part #
LT8609AEDDM#TRPBF

Mouser Part #
584-LT8609AEDDM#TR

Analog Devices

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

Learn More

Datasheet

4,982In Stock

Cut Tape

$8.27

$6.41

$5.94

$5.43

View

Reel

$4.66

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

DFN-10

Buck

Adjustable

3 A

1 Output

2.5 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

LT8609AIMSE#TRPBF
Analog Devices
1: $9.02
5,014In Stock

Mfr. Part #
LT8609AIMSE#TRPBF

Mouser Part #
584-LT8609AIMSETRPBF

Analog Devices

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

Learn More

Datasheet

5,014In Stock

Cut Tape

$9.02

$7.01

$6.51

$5.95

View

Reel

$5.24

MouseReel Available

Min.: 1
Mult.: 1

: 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, Cut Tape, MouseReel

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

LT8609IMSE#TRPBF
Analog Devices
1: $9.02
6,890In Stock

Mfr. Part #
LT8609IMSE#TRPBF

Mouser Part #
584-LT8609IMSE#TRPBF

Analog Devices

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

Learn More

Datasheet

6,890In Stock

Cut Tape

$9.02

$7.01

$6.51

$5.95

View

Reel

$5.17

MouseReel Available

Min.: 1
Mult.: 1

: 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

LT8609SIV#TRPBF
Analog Devices
1: $9.62
3,496In Stock
5,000Expected 1/5/2027

Mfr. Part #
LT8609SIV#TRPBF

Mouser Part #
584-LT8609SIV#TRPBF

Analog Devices

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

Learn More

Datasheet

3,496In Stock

5,000Expected 1/5/2027

Cut Tape

$9.62

$7.49

$6.96

$6.37

View

Reel

$5.63

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

LT8609SIV#PBF
Analog Devices
1: $9.62
12,718In Stock
4,358On Order

Mfr. Part #
LT8609SIV#PBF

Mouser Part #
584-LT8609SIVPBF

Analog Devices

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

Learn More

Datasheet

12,718In Stock

4,358On Order

$9.62

$7.49

$6.96

$6.37

View

Min.: 1
Mult.: 1

SMD/SMT

LQFN-16

Buck

Adjustable

2 A

1 Output

2.5 uA

200 kHz to 2.2 MHz

- 40 C

+ 125 C

LT8609

Tray

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

LT8609AHMSE#TRPBF
Analog Devices
1: $9.75
2,391In Stock

Mfr. Part #
LT8609AHMSE#TRPBF

Mouser Part #
584-8609AHMSETRPBF

Analog Devices

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

Learn More

Datasheet

2,391In Stock

Cut Tape

$9.75

$7.59

$7.06

$6.46

View

Reel

$5.55

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

MSOP-10

Buck

Adjustable

2 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

LT8609AJDDM-3.3#PBF
Analog Devices
1: $9.83
557In Stock

Mfr. Part #
LT8609AJDDM-3.3#PBF

Mouser Part #
584-8609AJDDM-3.3PBF

Analog Devices

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

Learn More

Datasheet

557In Stock

$9.83

$7.66

$7.12

$6.59

View

Min.: 1
Mult.: 1

SMD/SMT

DFN-10

Buck

3.3 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

LT8609AEDDM#PBF
Analog Devices
1: $8.27
906In Stock
1,694Expected 9/16/2026

Mfr. Part #
LT8609AEDDM#PBF

Mouser Part #
584-LT8609AEDDM#PBF

Analog Devices

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

Learn More

Datasheet

906In Stock

1,694Expected 9/16/2026

$8.27

$6.41

$5.94

$5.37

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

+ 125 C

LT8609

Tube

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

LT8609AEMSE#PBF
Analog Devices
1: $8.29
738In Stock
900Expected 8/10/2026

Mfr. Part #
LT8609AEMSE#PBF

Mouser Part #
584-LT8609AEMSE#PBF

Analog Devices

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

Learn More

Datasheet

738In Stock

900Expected 8/10/2026

$8.29

$6.42

$5.67

$5.43

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

LT8609AEMSE#TRPBF
Analog Devices
1: $8.29
2,463In Stock

Mfr. Part #
LT8609AEMSE#TRPBF

Mouser Part #
584-LT8609AEMSETRPBF

Analog Devices

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

Learn More

Datasheet

2,463In Stock

Cut Tape

$8.29

$6.42

$5.96

$5.44

View

Reel

$4.68

MouseReel Available

Min.: 1
Mult.: 1

: 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, Cut Tape, MouseReel

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

LT8609AHMSE16#PBF
Analog Devices
1: $9.75
254In Stock
148Expected 7/28/2026

Mfr. Part #
LT8609AHMSE16#PBF

Mouser Part #
584-LT8609AHMSE16PBF

Analog Devices

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

Learn More

Datasheet

254In Stock

148Expected 7/28/2026

$9.75

$7.59

$6.86

$6.42

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

LT8609/A/B Synchronous Step-Down Regulators

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