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: $9.75
249In Stock
148Expected 31/08/2026

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 31/08/2026

$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

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

LT8609AJDDM#PBF
Analog Devices
1: $9.83
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

$9.83

$7.66

$7.12

$6.46

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: $9.83
1,904In Stock
2,500Expected 24/08/2026

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 24/08/2026

Cut Tape

$9.83

$7.66

$7.12

$6.52

View

Reel

$5.93

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: $8.01
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

$8.01

$6.20

$5.46

$5.24

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: $8.70
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

$8.70

$6.75

$5.96

$5.72

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: $8.29
1,866In Stock
4,750Expected 31/08/2026

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 31/08/2026

Cut Tape

$8.29

$6.42

$5.96

$5.44

View

Reel

$4.91

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: $9.75
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

$9.75

$7.59

$6.72

$6.45

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: $9.02
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

$9.02

$7.01

$6.19

$5.93

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: $8.85
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

$8.85

$6.87

$6.38

$5.83

View

Reel

$5.14

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: $9.62
2,329In Stock
5,000Expected 05/01/2027

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 05/01/2027

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

LT8609AEMSE16#PBF
Analog Devices
1: $8.09
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

$8.09

$6.27

$5.65

$5.27

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: $10.68
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

$10.68

$8.35

$7.76

$7.05

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: $9.83
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

$9.83

$7.66

$7.12

$6.46

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: $8.62
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

$8.62

$6.86

$6.65

$5.94

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: $4.71
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

$4.71

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

LT8609AHMSE16#TRPBF
Analog Devices
2,500: $5.54
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

$5.54

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: $5.67
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

$5.67

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: $6.22
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

$6.22

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: $4.49
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

$4.49

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: $4.91
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

$4.91

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: $5.56
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

$5.56

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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