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LTC3780 Datasheet PDF

Part Series:
LTC3780 Series
Category:
DC-DC Converters
Description:
LINEAR TECHNOLOGY LTC3780EG#PBF DC-DC Controller, 4V to 36V, 1 Output, Synchronous Boost, Synchronous Buck, 440kHz, SSOP-24
Updated Time: 2023/01/13 01:25:00 (UTC + 8)

LTC3780 DC-DC Converters Datasheet PDF

LTC3780 Datasheet PDF DC-DC Converters

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LTC3780EG#PBF - Linear Technology Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Number of Pins
24 Pin
Supply Voltage (DC)
4.00V (min)
Case/Package
SSOP-24
Number of Outputs
1 Output
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LTC3780EG#PBF - Linear Technology Function Overview

The LTC3780EG#PBF is a high efficiency synchronous 4-switch Buck-boost Controller operates from input voltages above, below or equal to the output voltage. The constant frequency current mode architecture allows a phase-lockable frequency of up to 400kHz. With a wide 4 to 30V (36V maximum) input and output range and seamless transfers between operating modes, the LTC3780 is ideal for automotive, telecom and battery-powered systems. The operating mode of the controller is determined through the FCB pin. For boost operation, the FCB mode pin can select among Burst Mode® operation, Discontinuous mode and Forced Continuous mode. During buck operation, the FCB mode pin can select among Skip-Cycle mode, Discontinuous mode and Forced Continuous mode. Burst Mode® operation and Skip-Cycle mode provide high efficiency operation at light loads while forced continuous mode and discontinuous mode operate at a constant frequency.
Single inductor architecture allows VIN above, below or equal to VOUT
Synchronous rectification up to 98% efficiency
Current mode control
±1% Output voltage accuracy (0.8V < VOUT < 30V)
200 to 400kHz Phase-lockable fixed frequency
Power good output voltage monitor
Internal LDO for MOSFET supply
Quad N-channel MOSFET synchronous drive
VOUT disconnected from VIN during shutdown
Adjustable soft-start current ramping
Fold back output current limiting
Selectable low current modes
Output overvoltage protection
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