LT8471HFE#TRPBF

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Analog Devices Inc./Maxim Integrated

DUAL MULTITOPOLOGY DC/DC CONVERTERS WITH 2A SWITCHES AND SYNCHRONIZATION

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LT8471HFE#TRPBF

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Analog Devices Inc./Maxim Integrated

DUAL MULTITOPOLOGY DC/DC CONVERTERS WITH 2A SWITCHES AND SYNCHRONIZATION

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT8471 Series

The LT8471 is a dual PWM DC/DC converter containing two internal 2A, 50V switches and an additional 500mA switch to facilitate step-down and inverting conversion. Each 2A channel can be independently configured as a buck, boost, SEPIC, flyback or inverting converter. Capable of generating positive and negative outputs from a single input rail, the LT8471 is ideal for many local power supply designs.The LT8471 has an adjustable oscillator, set by a resistor placed from the RT pin to ground. Additionally, the LT8471 can be synchronized to an external clock. The free running or synchronized switching frequency range of the part can be set between 100kHz and 2MHz.Additional features such as frequency foldback, soft-start, and power good are integrated. The LT8471 is available in 20-lead TSSOP and 28-Lead (4mm × 5mm) QFN packages.ApplicationsDual Rail Power for Signal Chain.Buck/Buck, Buck/Boost, Boost/Boost, Boost/Invert, Invert/Invert, Buck/Invert

Technical Specifications

Parameters and characteristics for this part

Specification	LT8471HFE#TRPBF

Current - Output (Switch) (Value 1)	1.35 A
Current - Output (Switch) (Value 2)	2.1 A
Frequency - Switching (Max)	2 MHz
Frequency - Switching (Min)	100 kHz
Function	Step-Up/Step-Down, Step-Down, Step-Up
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature (Max)	150 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive or Negative, Positive, Negative
Output Type	Adjustable
Package Features	Exposed Pad
Package Length	0.173 in
Package Name	20-TSSOP-EP, 20-TSSOP
Package Width	4.4 mm
Synchronous Rectifier	No
Topology	Buck, Flyback, Boost, SEPIC
Voltage - Input (Max)	50 V p-p
Voltage - Input (Min)	2.6 V
Voltage - Output (Max)	50 V
Voltage - Output (Min/Fixed)	2.6 V

LT8471 Series

Dual Multitopology DC/DC Converters with 2A Switches and Synchronization

Part	Package Width	Package Name	Package Length	Voltage - Input (Min)	Synchronous Rectifier	Voltage - Input (Max)	Number of Outputs	Voltage - Output (Min/Fixed)	Voltage - Output (Max)	Current - Output (Switch) (Value 2)	Current - Output (Switch) (Value 1)	Topology	Package / Case	Output Type	Function	Operating Temperature (Max)	Operating Temperature (Min)	Frequency - Switching (Max)	Frequency - Switching (Min)	Mounting Type	Output Configuration	Package Features
Analog Devices Inc./Maxim Integrated LT8471IUFD#TRPBF	5 mm	28-QFN	4 mm	2.6 V	No	50 V p-p	2	2.6 V	50 V	2.1 A	1.35 A	Boost Buck Flyback SEPIC	28-WFQFN Exposed Pad	Adjustable	Step-Down Step-Up Step-Up/Step-Down	125 °C	-40 °C	2 MHz	100 kHz	Surface Mount	Negative Positive Positive or Negative
Analog Devices Inc./Maxim Integrated LT8471IUFD#PBF	5 mm	28-QFN	4 mm	2.6 V	No	50 V p-p	2	2.6 V	50 V	2.1 A	1.35 A	Boost Buck Flyback SEPIC	28-WFQFN Exposed Pad	Adjustable	Step-Down Step-Up Step-Up/Step-Down	125 °C	-40 °C	2 MHz	100 kHz	Surface Mount	Negative Positive Positive or Negative
Analog Devices Inc./Maxim Integrated LT8471IFE#PBF	4.4 mm	20-TSSOP 20-TSSOP-EP	0.173 in	2.6 V	No	50 V p-p	2	2.6 V	50 V	2.1 A	1.35 A	Boost Buck Flyback SEPIC		Adjustable	Step-Down Step-Up Step-Up/Step-Down	125 °C	-40 °C	2 MHz	100 kHz	Surface Mount	Negative Positive Positive or Negative	Exposed Pad
Analog Devices Inc./Maxim Integrated LT8471HFE#TRPBF	4.4 mm	20-TSSOP 20-TSSOP-EP	0.173 in	2.6 V	No	50 V p-p	2	2.6 V	50 V	2.1 A	1.35 A	Boost Buck Flyback SEPIC		Adjustable	Step-Down Step-Up Step-Up/Step-Down	150 °C	-40 °C	2 MHz	100 kHz	Surface Mount	Negative Positive Positive or Negative	Exposed Pad
Analog Devices Inc./Maxim Integrated LT8471EUFD#TRPBF	5 mm	28-QFN	4 mm	2.6 V	No	50 V p-p	2	2.6 V	50 V	2.1 A	1.35 A	Boost Buck Flyback SEPIC	28-WFQFN Exposed Pad	Adjustable	Step-Down Step-Up Step-Up/Step-Down	125 °C	-40 °C	2 MHz	100 kHz	Surface Mount	Negative Positive Positive or Negative
Analog Devices Inc./Maxim Integrated LT8471EFE#PBF	4.4 mm	20-TSSOP 20-TSSOP-EP	0.173 in	2.6 V	No	50 V p-p	2	2.6 V	50 V	2.1 A	1.35 A	Boost Buck Flyback SEPIC		Adjustable	Step-Down Step-Up Step-Up/Step-Down	125 °C	-40 °C	2 MHz	100 kHz	Surface Mount	Negative Positive Positive or Negative	Exposed Pad
Analog Devices Inc./Maxim Integrated LT8471EFE#TRPBF	4.4 mm	20-TSSOP 20-TSSOP-EP	0.173 in	2.6 V	No	50 V p-p	2	2.6 V	50 V	2.1 A	1.35 A	Boost Buck Flyback SEPIC		Adjustable	Step-Down Step-Up Step-Up/Step-Down	125 °C	-40 °C	2 MHz	100 kHz	Surface Mount	Negative Positive Positive or Negative	Exposed Pad
Analog Devices Inc./Maxim Integrated LT8471HFE#PBF	4.4 mm	20-TSSOP 20-TSSOP-EP	0.173 in	2.6 V	No	50 V p-p	2	2.6 V	50 V	2.1 A	1.35 A	Boost Buck Flyback SEPIC		Adjustable	Step-Down Step-Up Step-Up/Step-Down	150 °C	-40 °C	2 MHz	100 kHz	Surface Mount	Negative Positive Positive or Negative	Exposed Pad
Analog Devices Inc./Maxim Integrated LT8471IFE#TRPBF	4.4 mm	20-TSSOP 20-TSSOP-EP	0.173 in	2.6 V	No	50 V p-p	2	2.6 V	50 V	2.1 A	1.35 A	Boost Buck Flyback SEPIC		Adjustable	Step-Down Step-Up Step-Up/Step-Down	125 °C	-40 °C	2 MHz	100 kHz	Surface Mount	Negative Positive Positive or Negative	Exposed Pad
Analog Devices Inc./Maxim Integrated LT8471EUFD#PBF	5 mm	28-QFN	4 mm	2.6 V	No	50 V p-p	2	2.6 V	50 V	2.1 A	1.35 A	Boost Buck Flyback SEPIC	28-WFQFN Exposed Pad	Adjustable	Step-Down Step-Up Step-Up/Step-Down	125 °C	-40 °C	2 MHz	100 kHz	Surface Mount	Negative Positive Positive or Negative

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LT8471HFE#TRPBF | Datasheet

Tape and Reel Packaging

R530 Reliability Data