LTC7813HUH#TRPBF

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Analog Devices Inc./Maxim Integrated

DC/DC CNTRLR DUAL-OUT STEP DOWN/STEP UP 850KHZ 32-PIN QFN EP T/R

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LTC7813HUH#TRPBF

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Analog Devices Inc./Maxim Integrated

DC/DC CNTRLR DUAL-OUT STEP DOWN/STEP UP 850KHZ 32-PIN QFN EP T/R

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC7813 Series

The LTC7813 is a high performance synchronous Boost+Buck DC/DC switching regulator controller that drives all N-channel power MOSFET stages. It contains independent step-up (boost) and step-down (buck) controllers that can regulate two separate outputs or be cascaded to regulate an output voltage from an input voltage that can be above, below, or equal to the output voltage. The LTC7813 operates from a wide 4.5V to 60V input supply range. When biased from the output of the boost regulator, the LTC7813 can operate from an input supply as low as 2.2V after start-up. The 34μA no-load quiescent current (both channels on) extends operating runtime in battery-powered systems.Unlike conventional buck-boost regulators, the LTC7813’s cascaded Boost+Buck solution has continuous, nonpulsating, input and output currents, substantially reducing voltage ripple and EMI. The LTC7813 has independent feedback and compensation points for the boost and buck regulation loops, enabling a fast output transient response that can be externally optimized.ApplicationsAutomotive and Industrial Power SystemsHigh Power Battery Operated Systems

Technical Specifications

Parameters and characteristics for this part

Specification	LTC7813HUH#TRPBF

Clock Sync	No
Control Features	Frequency Control, Power Good, Enable, Soft Start, Tracking
Duty Cycle (Max)	96%, 99%
Frequency - Switching (Max)	535 kHz, 835 kHz
Frequency - Switching (Min)	350 kHz, 105 kHz
Function	Step-Up, Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature (Max)	150 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	32-WFQFN Exposed Pad
Package Length	5 mm
Package Name	32-QFN
Package Width	5 mm
Synchronous Rectifier	Yes
Topology	Buck, Boost
Voltage - Supply (Vcc/Vdd) Maximum	60 V
Voltage - Supply (Vcc/Vdd) Minimum	4.5 V

LTC7813 Series

Low IQ, 60V Synchronous Boost+Buck Controller

Part	Number of Outputs	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Output Configuration	Clock Sync	Operating Temperature (Max)	Operating Temperature (Min)	Output Phases	Mounting Type	Duty Cycle (Max)	Frequency - Switching (Max)	Frequency - Switching (Min)	Topology	Package Width	Package Name	Package Length	Synchronous Rectifier	Function	Output Type	Control Features	Package / Case
Analog Devices Inc./Maxim Integrated LTC7813EUH#TRPBF	2	4.5 V	60 V	Positive	No	125 °C	-40 °C	1	Surface Mount	96% 99%	535 kHz 835 kHz	105 kHz 350 kHz	Boost Buck	5 mm	32-QFN	5 mm	Yes	Step-Down Step-Up	Transistor Driver	Enable Frequency Control Power Good Soft Start Tracking	32-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC7813MPUH#PBF	2	4.5 V	60 V	Positive	No	150 °C	-55 °C	1	Surface Mount	96% 99%	535 kHz 835 kHz	105 kHz 350 kHz	Boost Buck	5 mm	32-QFN	5 mm	Yes	Step-Down Step-Up	Transistor Driver	Enable Frequency Control Power Good Soft Start Tracking	32-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC7813IUH#TRPBF	2	4.5 V	60 V	Positive	No	125 °C	-40 °C	1	Surface Mount	96% 99%	535 kHz 835 kHz	105 kHz 350 kHz	Boost Buck	5 mm	32-QFN	5 mm	Yes	Step-Down Step-Up	Transistor Driver	Enable Frequency Control Power Good Soft Start Tracking	32-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC7813IUH#PBF	2	4.5 V	60 V	Positive	No	125 °C	-40 °C	1	Surface Mount	96% 99%	535 kHz 835 kHz	105 kHz 350 kHz	Boost Buck	5 mm	32-QFN	5 mm	Yes	Step-Down Step-Up	Transistor Driver	Enable Frequency Control Power Good Soft Start Tracking	32-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC7813EUH#PBF	2	4.5 V	60 V	Positive	No	125 °C	-40 °C	1	Surface Mount	96% 99%	535 kHz 835 kHz	105 kHz 350 kHz	Boost Buck	5 mm	32-QFN	5 mm	Yes	Step-Down Step-Up	Transistor Driver	Enable Frequency Control Power Good Soft Start Tracking	32-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC7813MPUH#TRPBF	2	4.5 V	60 V	Positive	No	150 °C	-55 °C	1	Surface Mount	96% 99%	535 kHz 835 kHz	105 kHz 350 kHz	Boost Buck	5 mm	32-QFN	5 mm	Yes	Step-Down Step-Up	Transistor Driver	Enable Frequency Control Power Good Soft Start Tracking	32-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC7813HUH#TRPBF	2	4.5 V	60 V	Positive	No	150 °C	-40 °C	1	Surface Mount	96% 99%	535 kHz 835 kHz	105 kHz 350 kHz	Boost Buck	5 mm	32-QFN	5 mm	Yes	Step-Down Step-Up	Transistor Driver	Enable Frequency Control Power Good Soft Start Tracking	32-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC7813HUH#PBF	2	4.5 V	60 V	Positive	No	150 °C	-40 °C	1	Surface Mount	96% 99%	535 kHz 835 kHz	105 kHz 350 kHz	Boost Buck	5 mm	32-QFN	5 mm	Yes	Step-Down Step-Up	Transistor Driver	Enable Frequency Control Power Good Soft Start Tracking	32-WFQFN Exposed Pad

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Tape and Reel Packaging

LTC7813HUH#TRPBF | Datasheet

R526 Reliability Data