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LINEAR TECHNOLOGY  LTC3780EG#PBF  DC/DC Controller, 4V to 36V, 1 Output, Synchronous Boost, Synchronous Buck, 440kHz, SSOP-24

LINEAR TECHNOLOGY LTC3780EG#PBF
Manufacturer Part No:
LTC3780EG#PBF
Order Code:
1273545
Technical Datasheet:
See all Technical Docs

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Product 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

Product Information

Supply Voltage Min:
4V
Supply Voltage Max:
36V
No. of Outputs:
1 Output
Duty Cycle (%):
99%
Controller IC Case Style:
SSOP
No. of Pins:
24Pins
Switching Frequency:
440kHz
Topology:
Synchronous Boost, Synchronous Buck
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Each
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Automotive
  • Communications & Networking
  • Power Management
  • Industrial

Legislation and Environmental

Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.000426

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