LTC7800EUDC#TRPBF

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Analog Devices Inc./Maxim Integrated

LOW IQ, 60V, HIGH FREQUENCY SYNCHRONOUS STEP-DOWN CONTROLLER

LTC7800EUDC#TRPBF

Active

Analog Devices Inc./Maxim Integrated

LOW IQ, 60V, HIGH FREQUENCY SYNCHRONOUS STEP-DOWN CONTROLLER

Description Specifications Series Pricing CAD Documents

Description

General part information

LTC7800 Series

The LTC7800 is a high performance step-down switching regulator DC/DC controller that drives an all N-channel synchronous power MOSFET stage. A constant frequency current mode architecture allows a phase-lockable frequency of up to 2.25MHz.The 50μA no-load quiescent current extends operating run time in battery-powered systems. OPTI-LOOP®compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC7800 features a precision 0.8V reference and power good output indicator. A wide 4V to 60V input supply range encompasses a wide range of intermediate bus voltages and battery chemistries. The output voltage of the LTC7800 can be programmed between 0.8V to 24V.The TRACK/SS pin ramps the output voltages during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The PLLIN/MODE pin selects among Burst Mode operation, pulse-skipping mode, or continuous conduction mode at light loads.ApplicationsAutomotive Always-On SystemsBattery Powered Digital DevicesDistributed DC Power Systems

Technical Specifications

Parameters and characteristics for this part

Specification	LTC7800EUDC#TRPBF

Clock Sync	No
Control Features	Current Limit, Power Good, Soft Start, Tracking
Duty Cycle (Max)	98 %
Frequency - Switching (Max)	2.25 MHz
Frequency - Switching (Min)	320 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	20-WFQFN Exposed Pad
Package Length	3 mm
Package Name	20-QFN
Package Width	4 mm
Synchronous Rectifier	No
Topology	Buck
Voltage - Supply (Vcc/Vdd) Maximum	60 V
Voltage - Supply (Vcc/Vdd) Minimum	4 V

LTC7800 Series

Part	Function	Voltage - Supply (Vcc/Vdd) Maximum	Voltage - Supply (Vcc/Vdd) Minimum	Number of Outputs	Package Length	Package Name	Package Width	Duty Cycle (Max)	Output Configuration	Topology	Output Phases	Output Type	Control Features	Mounting Type	Package / Case	Clock Sync	Synchronous Rectifier	Frequency - Switching (Min)	Frequency - Switching (Max)	Operating Temperature (Min)	Operating Temperature (Max)	Contents	Voltage - Output	Current - Output	Main Purpose	Regulator Topology	Frequency - Switching	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Utilized IC / Part	Total Output Count	Non-Isolated Output Count
Analog Devices Inc./Maxim Integrated LTC7800HUDC#TRPBF	Step-Down	60 V	4 V	1	3 mm	20-QFN	4 mm	98 %	Positive	Buck	1	Transistor Driver	Current Limit Power Good Soft Start Tracking	Surface Mount	20-WFQFN Exposed Pad	No	No	320 kHz	2.25 MHz	-40 °C	150 °C
Analog Devices Inc./Maxim Integrated LTC7800IUDC#PBF	Step-Down	60 V	4 V	1	3 mm	20-QFN	4 mm	98 %	Positive	Buck	1	Transistor Driver	Current Limit Power Good Soft Start Tracking	Surface Mount	20-WFQFN Exposed Pad	No	No	320 kHz	2.25 MHz	-40 °C	125 °C
Analog Devices Inc./Maxim Integrated LTC7800HUDC#PBF	Step-Down	60 V	4 V	1	3 mm	20-QFN	4 mm	98 %	Positive	Buck	1	Transistor Driver	Current Limit Power Good Soft Start Tracking	Surface Mount	20-WFQFN Exposed Pad	No	No	320 kHz	2.25 MHz	-40 °C	150 °C
Analog Devices Inc./Maxim Integrated LTC7800EUDC#TRPBF	Step-Down	60 V	4 V	1	3 mm	20-QFN	4 mm	98 %	Positive	Buck	1	Transistor Driver	Current Limit Power Good Soft Start Tracking	Surface Mount	20-WFQFN Exposed Pad	No	No	320 kHz	2.25 MHz	-40 °C	125 °C
Analog Devices Inc./Maxim Integrated LTC7800EUDC#PBF	Step-Down	60 V	4 V	1	3 mm	20-QFN	4 mm	98 %	Positive	Buck	1	Transistor Driver	Current Limit Power Good Soft Start Tracking	Surface Mount	20-WFQFN Exposed Pad	No	No	320 kHz	2.25 MHz	-40 °C	125 °C
Analog Devices Inc./Maxim Integrated DC2736A												Non-Isolated										Board	12 V	20 A	DC/DC Step Down	Buck	500 kHz	30 V	55 V	LTC7800	1	1 count
Analog Devices Inc./Maxim Integrated LTC7800IUDC#TRPBF	Step-Down	60 V	4 V	1	3 mm	20-QFN	4 mm	98 %	Positive	Buck	1	Transistor Driver	Current Limit Power Good Soft Start Tracking	Surface Mount	20-WFQFN Exposed Pad	No	No	320 kHz	2.25 MHz	-40 °C	125 °C

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC7800EUDC#TRPBF | Datasheet

DC2786A Demo Manual (Rev.0)