Specification	LTC7820IUFD#PBF

Clock Sync	False
Control Features	Soft Start, Enable, Frequency Control, Power Good, Tracking, Current Limit
Duty Cycle (Max) [Max]	50 %
Frequency - Switching [Max]	1 MHz
Frequency - Switching [Min]	100 kHz
Function	Step-Down, Step-Up
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Package / Case	28-WFQFN Exposed Pad
Supplier Device Package	28-QFN (4x5)
Synchronous Rectifier	False
Topology	Boost, Buck
Voltage - Supply (Vcc/Vdd) [Max]	72 V
Voltage - Supply (Vcc/Vdd) [Min]	6 V

LTC7820 Series

Part	Supplier Device Package	Output Configuration	Number of Outputs	Function	Frequency - Switching [Min]	Frequency - Switching [Max]	Output Type	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Topology	Package / Case	Control Features	Output Phases	Duty Cycle (Max) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Board Type	Supplied Contents	Outputs and Type	Outputs and Type	Contents	Utilized IC / Part	Voltage - Input [Max]	Voltage - Input [Min]	Current - Output	Main Purpose	Frequency - Switching	Regulator Topology
Analog Devices Inc./Maxim Integrated LTC7820IUFD#TRPBF	28-QFN (4x5)	Positive	1	Step-Down Step-Up	100 kHz	1 MHz	Transistor Driver	-40 C	125 °C	Surface Mount	Boost Buck	28-WFQFN Exposed Pad	Current Limit Enable Frequency Control Power Good Soft Start Tracking	2	50 %	6 V	72 V
Analog Devices Inc./Maxim Integrated LTC7820IUFD#PBF	28-QFN (4x5)	Positive	1	Step-Down Step-Up	100 kHz	1 MHz	Transistor Driver	-40 C	125 °C	Surface Mount	Boost Buck	28-WFQFN Exposed Pad	Current Limit Enable Frequency Control Power Good Soft Start Tracking	2	50 %	6 V	72 V
Analog Devices Inc./Maxim Integrated LTC7820EUFD#PBF	28-QFN (4x5)	Positive	1	Step-Down Step-Up	100 kHz	1 MHz	Transistor Driver	-40 C	125 °C	Surface Mount	Boost Buck	28-WFQFN Exposed Pad	Current Limit Enable Frequency Control Power Good Soft Start	2	50 %	6 V	72 V
Analog Devices Inc./Maxim Integrated DC2543A																		Fully Populated	Board(s)	1	1 Non-Isolated Output Non-Isolated	Board(s)	LTC7820	60 V	36 V	10 A	DC/DC Step Down	200 kHz	Buck
Analog Devices Inc./Maxim Integrated LTC7820EUFD#TRPBF	28-QFN (4x5)	Positive	1	Step-Down Step-Up	100 kHz	1 MHz	Transistor Driver	-40 C	125 °C	Surface Mount	Boost Buck	28-WFQFN Exposed Pad	Current Limit Enable Frequency Control Power Good Soft Start Tracking	2	50 %	6 V	72 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	157	$ 14.71	1m+
	Tube	1	$ 15.65	1m+
		10	$ 11.19
		25	$ 10.05
		100	$ 8.77
		250	$ 8.15
		500	$ 7.77
		1000	$ 7.66
Newark	Each	1	$ 14.71	1m+
		10	$ 10.24
		25	$ 9.50
		50	$ 8.75
		146	$ 8.01
		292	$ 7.66
		511	$ 7.74

Description

General part information

LTC7820 Series

The LTC7820 is a fixed ratio high voltage high power switched capacitor/charge pump controller. The device includes four N-channel MOSFET gate drivers to drive external power MOSFETs in voltage divider, doubler or inverter configurations. The device achieves a 2:1 step-down ratio from an input voltage as high as 72V, a 1:2 step-up ratio from an input voltage as high as 36V, or a 1:1 inverting ratio from an input voltage up to 36V. Each power MOSFET is switched with 50% duty cycle at a constant pre-programmed switching frequency. System efficiency can be optimized to over 99%. The LTC7820 provides a small and cost effective solution for high power, non-isolated intermediate bus applications with fault protection.The LTC7820 switching frequency can be linearly programmed from 100 kHz to 1MHz. The device is available in a thermally enhanced 28-lead QFN package with some no-connect pins for high voltage compatible pin spacing.ApplicationsBus ConvertersHigh Power Distributed Power SystemsCommunications SystemsIndustrial Applications