LT8705IUHF

Obsolete

Analog Devices

IC REG BUCK

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LT8705IUHF

Obsolete

Analog Devices

IC REG BUCK

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Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LT8705IUHF

Clock Sync	True
Control Features	Frequency Control, Enable, Soft Start
Frequency - Switching [Max]	400 kHz
Frequency - Switching [Min]	100 kHz
Function	Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Package / Case	38-WFQFN Exposed Pad
Synchronous Rectifier	True
Topology	Buck-Boost
Voltage - Supply (Vcc/Vdd) [Max]	80 V
Voltage - Supply (Vcc/Vdd) [Min]	2.8 V

LT8705A Series

80V VINand VOUTSynchronous 4-Switch Buck-Boost DC/DC Controller

Part	Mounting Type	Function	Frequency - Switching [Max]	Frequency - Switching [Min]	Package / Case	Number of Outputs	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Output Phases	Control Features	Output Configuration	Topology	Output Type	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Package / Case [custom]	Package / Case	Package / Case [custom]
Analog Devices LT8705IUHF#TRPBF	Surface Mount	Step-Up/Step-Down	400 kHz	100 kHz	38-WFQFN Exposed Pad	2	80 V	2.8 V	2	Enable Frequency Control Soft Start	Positive	Buck-Boost	Transistor Driver	-40 °C	125 ¯C
Analog Devices LT8705IFE#PBF	Surface Mount	Step-Up/Step-Down	400 kHz	100 kHz	38-TFSOP Exposed Pad	2	80 V	2.8 V	2	Enable Frequency Control Soft Start	Positive	Buck-Boost	Transistor Driver	-40 °C	125 ¯C	38-TSSOP-EP	0.173 "	31 Leads	4.4 mm
Analog Devices LT8705IUHF	Surface Mount	Step-Up/Step-Down	400 kHz	100 kHz	38-WFQFN Exposed Pad	2	80 V	2.8 V	2	Enable Frequency Control Soft Start	Positive	Buck-Boost	Transistor Driver	-40 °C	125 °C
Analog Devices LT8705AEUHF	Surface Mount	Step-Up/Step-Down	400 kHz	100 kHz	38-WFQFN Exposed Pad	2	80 V	2.8 V	2	Enable Frequency Control Soft Start	Positive	Buck-Boost	Transistor Driver	-40 °C	125 °C
Analog Devices LT8705EFE#PBF	Surface Mount	Step-Up/Step-Down	400 kHz	100 kHz	38-TFSOP Exposed Pad	2	80 V	2.8 V	2	Enable Frequency Control Soft Start	Positive	Buck-Boost	Transistor Driver	-40 °C	125 ¯C	38-TSSOP-EP	0.173 "	31 Leads	4.4 mm
Analog Devices LT8705EUHF#PBF	Surface Mount	Step-Up/Step-Down	400 kHz	100 kHz	38-WFQFN Exposed Pad	2	80 V	2.8 V	2	Enable Frequency Control Soft Start	Positive	Buck-Boost	Transistor Driver	-40 °C	125 ¯C
Analog Devices LT8705IFE	Surface Mount	Step-Up/Step-Down	400 kHz	100 kHz	38-TFSOP Exposed Pad	2	80 V	2.8 V	2	Enable Frequency Control Soft Start	Positive	Buck-Boost	Transistor Driver	-40 °C	125 °C	38-TSSOP-EP	0.173 "	31 Leads	4.4 mm
Analog Devices LT8705AEFE#TRPBF	Surface Mount	Step-Up/Step-Down	400 kHz	100 kHz	38-TFSOP Exposed Pad	2	80 V	2.8 V	2	Enable Frequency Control Soft Start	Positive	Buck-Boost	Transistor Driver	-40 °C	125 °C	38-TSSOP-EP	0.173 "	31 Leads	4.4 mm
Analog Devices LT8705AEUHF#TRPBF	Surface Mount	Step-Up/Step-Down	400 kHz	100 kHz	38-WFQFN Exposed Pad	2	80 V	2.8 V	2	Enable Frequency Control Soft Start	Positive	Buck-Boost	Transistor Driver	-40 °C	125 °C
Analog Devices LT8705EFE	Surface Mount	Step-Up/Step-Down	400 kHz	100 kHz	38-TFSOP Exposed Pad	2	80 V	2.8 V	2	Enable Frequency Control Soft Start	Positive	Buck-Boost	Transistor Driver	-40 °C	125 °C	38-TSSOP-EP	0.173 "	31 Leads	4.4 mm

Pricing

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

Distributor	Package	Quantity	$

Description

General part information

LT8705A Series

The LT8705A is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The part has integrated input current, input voltage, output current and output voltage feedback loops. With a wide 2.8V to 80V input and 1.3V to 80V output range, the LT8705A is compatible with most solar, automotive, telecom and battery-powered systems. The LT8705A is an improved pin compatible version of the LT8705 and is recommended for new designs. See LT8705A vs LT8705 in the Applications Information section for more information.The LT8705A includes a MODE pin to select among Burst Mode®operation, discontinuous or continuous conduction mode at light loads. Additional features include a 3.3V/12mA LDO, a synchronizable fixed operating frequency, and onboard gate drivers.LT8705LT8705AImproved, pin-to-pin compatible version of LT8705. Recommended for all new designsApplicationsHigh Voltage Buck-Boost ConvertersInput or Output Current Limited Converters

Documents

Technical documentation and resources

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