Specification	LTC3873EDDB-5#TRMPBF

Clock Sync	False
Control Features	Soft Start, Enable, Current Limit
Duty Cycle (Max) [Max]	78 %
Function	Step-Up/Step-Down, Step-Up
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 C
Operating Temperature [Min]	-40 ¯C
Output Configuration	Isolation Capable, Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	8-WFDFN Exposed Pad
Supplier Device Package	8-DFN (3x2)
Synchronous Rectifier	False
Topology	Boost, SEPIC, Flyback
Voltage - Supply (Vcc/Vdd) [Max]	60 V
Voltage - Supply (Vcc/Vdd) [Min]	4.1 V

LTC3873-5 Series

Part	Package / Case	Function	Output Configuration	Output Phases	Number of Outputs	Operating Temperature [Min]	Operating Temperature [Max]	Topology	Supplier Device Package	Mounting Type	Duty Cycle (Max) [Max]	Output Type	Control Features	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]
Analog Devices Inc./Maxim Integrated LTC3873ITS8-5#TRPBF	SOT-23-8 Thin TSOT-23-8	Step-Up Step-Up/Step-Down	Isolation Capable Positive	1	1	-40 C	125 °C	Boost Flyback SEPIC	TSOT-23-8	Surface Mount	78 %	Transistor Driver	Current Limit Enable Soft Start	4.1 V	60 V
Analog Devices Inc./Maxim Integrated LTC3873ETS8-5#TRPBF	SOT-23-8 Thin TSOT-23-8	Step-Up Step-Up/Step-Down	Isolation Capable Positive	1	1	-40 ¯C	85 C	Boost Flyback SEPIC	TSOT-23-8	Surface Mount	78 %	Transistor Driver	Current Limit Enable Soft Start	4.1 V	60 V
Analog Devices Inc./Maxim Integrated LTC3873IDDB-5#TRPBF	8-WFDFN Exposed Pad	Step-Up Step-Up/Step-Down	Isolation Capable Positive	1	1	-40 C	125 °C	Boost Flyback SEPIC	8-DFN (3x2)	Surface Mount	78 %	Transistor Driver	Current Limit Enable Soft Start	4.1 V	60 V
Analog Devices Inc./Maxim Integrated LTC3873EDDB-5#TRMPBF	8-WFDFN Exposed Pad	Step-Up Step-Up/Step-Down	Isolation Capable Positive	1	1	-40 ¯C	85 C	Boost Flyback SEPIC	8-DFN (3x2)	Surface Mount	78 %	Transistor Driver	Current Limit Enable Soft Start	4.1 V	60 V
Analog Devices Inc./Maxim Integrated LTC3873ETS8-5#TRMPBF	SOT-23-8 Thin TSOT-23-8	Step-Up Step-Up/Step-Down	Isolation Capable Positive	1	1	-40 ¯C	85 C	Boost Flyback SEPIC	TSOT-23-8	Surface Mount	78 %	Transistor Driver	Current Limit Enable Soft Start	4.1 V	60 V
Analog Devices Inc./Maxim Integrated LTC3873IDDB-5#TRMPBF	8-WFDFN Exposed Pad	Step-Up Step-Up/Step-Down	Isolation Capable Positive	1	1	-40 C	125 °C	Boost Flyback SEPIC	8-DFN (3x2)	Surface Mount	78 %	Transistor Driver	Current Limit Enable Soft Start	4.1 V	60 V
Analog Devices Inc./Maxim Integrated LTC3873ITS8-5#TRMPBF	SOT-23-8 Thin TSOT-23-8	Step-Up Step-Up/Step-Down	Isolation Capable Positive	1	1	-40 C	125 °C	Boost Flyback SEPIC	TSOT-23-8	Surface Mount	78 %	Transistor Driver	Current Limit Enable Soft Start	4.1 V	60 V
Analog Devices Inc./Maxim Integrated LTC3873EDDB-5#TRPBF	8-WFDFN Exposed Pad	Step-Up Step-Up/Step-Down	Isolation Capable Positive	1	1	-40 ¯C	85 C	Boost Flyback SEPIC	8-DFN (3x2)	Surface Mount	78 %	Transistor Driver	Current Limit Enable Soft Start	4.1 V	60 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Digikey	N/A	0	$ 2.00	1m+

Description

General part information

LTC3873-5 Series

The LTC3873-5 is a constant frequency current mode controller for boost, flyback or SEPIC DC/DC converters designed to drive an N-channel MOSFET for high input and output voltage converter applications.The LTC3873-5 provides ±1.5% output voltage accuracy and consumes only 300μA quiescent current during normal operation and only 50μA during micropower start-up. Using a 9.3V internal shunt regulator, the LTC3873-5 can be powered from a high input voltage through a resistor or it can be powered directly from a low impedance DC voltage of 9V or less. Soft-start can be programmed using an external capacitor.The LTC3873-5 is available in 8-lead ThinSOT and 2mm × 3mm DFN packages.LTC3873LTC3873-5VCCUV+8.4V3.9VVCCUV–4V2.9VApplicationsTelecom Power SuppliesAutomotive Power SuppliesPoE Applications

Documents

Technical documentation and resources

LTC3873EDDB-5#TRMPBF | Datasheet

Datasheet

R421 Reliability Data

Reliability Data