Voltage Regulators - Switching Regulators

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LTC7803 Synchronous Step-Down Controllers

Analog Devices Inc. LTC7803 Synchronous Step-Down Controllers are high-performance, 100% duty cycle capable, synchronous step-down DC/DC switching regulator controllers that drive an all N-channel power MOSFET stage. Synchronous rectification increases efficiency, reduces power losses, and eases thermal requirements. A constant frequency current mode architecture allows a phase-lockable switching frequency of up to 3MHz. Analog Devices LTC7803 Synchronous Step-Down Controllers operate from a wide 4.5V to 40V input supply range.

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Part #

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803JMSE#PBF
Analog Devices
1: Rp125.670
185In Stock

Mfr. Part No.
LTC7803JMSE#PBF

Mouser Part No
584-LTC7803JMSE#PBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

185In Stock

Rp125.670

Rp96.867

Rp86.960

Rp80.906

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-16

Buck

800 mV to 40 V

20 A

1 Output

1.2 uA

100 kHz to 3 MHz

- 40 C

+ 125 C

LTC7803

Tube

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803IMSE#PBF
Analog Devices
1: Rp116.130
275In Stock

Mfr. Part No.
LTC7803IMSE#PBF

Mouser Part No
584-LTC7803IMSE#PBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

275In Stock

Rp116.130

Rp89.345

Rp82.924

Rp77.237

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-16

Buck

800 mV to 40 V

20 A

1 Output

1.2 uA

100 kHz to 3 MHz

- 40 C

+ 125 C

LTC7803

Tube

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803JUD#PBF
Analog Devices
1: Rp122.001
234In Stock

Mfr. Part No.
LTC7803JUD#PBF

Mouser Part No
584-LTC7803JUD#PBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

234In Stock

Rp122.001

Rp93.932

Rp86.960

Rp74.118

View

Min.: 1
Mult.: 1

SMD/SMT

QFN-16

Buck

800 mV to 40 V

20 A

1 Output

1.2 uA

100 kHz to 3 MHz

- 40 C

+ 125 C

LTC7803

Tube

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803EMSE#PBF
Analog Devices
1: Rp110.259
980In Stock

Mfr. Part No.
LTC7803EMSE#PBF

Mouser Part No
584-LTC7803EMSE#PBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

980In Stock

Rp110.259

Rp84.575

Rp75.952

Rp75.769

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-16

Buck

800 mV to 40 V

20 A

1 Output

1.2 uA

100 kHz to 3 MHz

- 40 C

+ 125 C

LTC7803

Tube

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803EUD#PBF
Analog Devices
1: Rp110.259
18In Stock
605Expected 03/06/2026

Mfr. Part No.
LTC7803EUD#PBF

Mouser Part No
584-LTC7803EUD#PBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

18In Stock

605Expected 03/06/2026

Rp110.259

Rp84.575

Rp78.154

Rp77.971

View

Min.: 1
Mult.: 1

SMD/SMT

QFN-16

Buck

800 mV to 40 V

20 A

1 Output

1.2 uA

100 kHz to 3 MHz

- 40 C

+ 125 C

LTC7803

Tube

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803HMSE#PBF
Analog Devices
1: Rp134.843
148In Stock

Mfr. Part No.
LTC7803HMSE#PBF

Mouser Part No
584-LTC7803HMSE#PBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

148In Stock

Rp134.843

Rp104.205

Rp93.748

Rp87.327

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-16

Buck

800 mV to 40 V

20 A

1 Output

1.2 uA

100 kHz to 3 MHz

- 40 C

+ 125 C

LTC7803

Tube

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803HUD#PBF
Analog Devices
1: Rp134.843
71In Stock

Mfr. Part No.
LTC7803HUD#PBF

Mouser Part No
584-LTC7803HUD#PBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

71In Stock

Rp134.843

Rp104.205

Rp96.500

Rp87.144

View

Min.: 1
Mult.: 1

SMD/SMT

QFN-16

Buck

800 mV to 40 V

20 A

1 Output

1.2 uA

100 kHz to 3 MHz

- 40 C

+ 125 C

LTC7803

Tube

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803JMSE#WPBF
Analog Devices
1: Rp135.577
196In Stock
481On Order

Mfr. Part No.
LTC7803JMSE#WPBF

Mouser Part No
584-LTC7803JMSE#WPBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

196In Stock

481On Order

Rp135.577

Rp104.756

Rp94.298

Rp87.877

View

Min.: 1
Mult.: 1

SMD/SMT

MSOP-16

Buck

800 mV to 40 V

20 A

1 Output

1.2 uA

100 kHz to 3 MHz

- 40 C

+ 125 C

LTC7803

Tube

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803JUD#WPBF
Analog Devices
1: Rp135.577
146In Stock

Mfr. Part No.
LTC7803JUD#WPBF

Mouser Part No
584-LTC7803JUD#WPBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

146In Stock

Rp135.577

Rp104.756

Rp97.050

Rp83.107

View

Min.: 1
Mult.: 1

SMD/SMT

QFN-16

Buck

800 mV to 40 V

20 A

1 Output

1.2 uA

100 kHz to 3 MHz

- 40 C

+ 125 C

AEC-Q100

LTC7803

Tube

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803EMSE#TRPBF
Analog Devices
2.500: Rp62.009
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LTC7803EMSE#TRPBF

Mouser Part No
584-LTC7803EMSE#TRPB

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

Rp62.009

Min.: 2.500
Mult.: 2.500

: 2.500

SMD/SMT

MSOP-16

1 Output

LTC7803

Reel

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803EUD#TRPBF
Analog Devices
2.500: Rp62.009
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LTC7803EUD#TRPBF

Mouser Part No
584-LTC7803EUD#TRPBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

Rp62.009

Min.: 2.500
Mult.: 2.500

: 2.500

SMD/SMT

QFN-16

1 Output

LTC7803

Reel

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803HMSE#TRPBF
Analog Devices
2.500: Rp77.420
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LTC7803HMSE#TRPBF

Mouser Part No
584-LTC7803HMSE#TRPB

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

Rp77.420

Min.: 2.500
Mult.: 2.500

: 2.500

SMD/SMT

MSOP-16

1 Output

LTC7803

Reel

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803HUD#TRPBF
Analog Devices
2.500: Rp77.420
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LTC7803HUD#TRPBF

Mouser Part No
584-LTC7803HUD#TRPBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

Rp77.420

Min.: 2.500
Mult.: 2.500

: 2.500

SMD/SMT

QFN-16

1 Output

LTC7803

Reel

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803IMSE#TRPBF
Analog Devices
2.500: Rp68.064
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LTC7803IMSE#TRPBF

Mouser Part No
584-LTC7803IMSE#TRPB

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

Rp68.064

Min.: 2.500
Mult.: 2.500

: 2.500

SMD/SMT

MSOP-16

1 Output

LTC7803

Reel

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803IUD#PBF
Analog Devices
1: Rp123.652
Non-Stocked Lead-Time 11 Weeks

Mfr. Part No.
LTC7803IUD#PBF

Mouser Part No
584-LTC7803IUD#PBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

Non-Stocked Lead-Time 11 Weeks

Rp123.652

Rp95.216

Rp88.061

Rp79.255

View

Min.: 1
Mult.: 1

SMD/SMT

QFN-16

Buck

800 mV to 40 V

20 A

1 Output

1.2 uA

100 kHz to 3 MHz

- 40 C

+ 125 C

LTC7803

Tube

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803IUD#TRPBF
Analog Devices
2.500: Rp68.064
Non-Stocked Lead-Time 11 Weeks

Mfr. Part No.
LTC7803IUD#TRPBF

Mouser Part No
584-LTC7803IUD#TRPBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

Non-Stocked Lead-Time 11 Weeks

Reel

Rp68.064

Min.: 2.500
Mult.: 2.500

: 2.500

SMD/SMT

QFN-16

1 Output

LTC7803

Reel

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803JMSE#TRPBF
Analog Devices
2.500: Rp69.348
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LTC7803JMSE#TRPBF

Mouser Part No
584-LTC7803JMSE#TRPB

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

Rp69.348

Min.: 2.500
Mult.: 2.500

: 2.500

SMD/SMT

MSOP-16

1 Output

LTC7803

Reel

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803JMSE#WTRPBF
Analog Devices
2.500: Rp77.787
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LTC7803JMSE#WTRPBF

Mouser Part No
584-LTC7803JMSEWTRPB

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

Rp77.787

Min.: 2.500
Mult.: 2.500

: 2.500

SMD/SMT

MSOP-16

1 Output

LTC7803

Reel

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803JUD#TRPBF
Analog Devices
2.500: Rp69.348
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LTC7803JUD#TRPBF

Mouser Part No
584-LTC7803JUD#TRPBF

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

Rp69.348

Min.: 2.500
Mult.: 2.500

: 2.500

SMD/SMT

QFN-16

1 Output

LTC7803

Reel

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

LTC7803JUD#WTRPBF
Analog Devices
2.500: Rp77.787
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
LTC7803JUD#WTRPBF

Mouser Part No
584-LTC7803JUD#WTRPB

Analog Devices

Switching Voltage Regulators 40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Reel

Rp77.787

Min.: 2.500
Mult.: 2.500

: 2.500

SMD/SMT

QFN-16

1 Output

AEC-Q100

LTC7803

Reel

LTC7803 Synchronous Step-Down Controllers

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