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LINEAR TECHNOLOGY  LTC1775IS#PBF  DC/DC Controller, High Power, Current mode, 4.3V to 36V, 1 Output, Synchronous Buck, 165kHz, SOIC-16

LINEAR TECHNOLOGY LTC1775IS#PBF
Manufacturer Part No:
LTC1775IS#PBF
Order Code:
2295016
Technical Datasheet:
See all Technical Docs

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The LTC1775IS#PBF is a synchronous step-down Switching Regulator Controller drives external N-channel power MOSFETs using few external components. current-mode control with MOSFET VDS sensing eliminates the need for a sense resistor and improves efficiency. Largely similar to the LTC1625, the LTC1775 has twice the maximum sense voltage for high current applications. The frequency of a nominal 150kHz internal oscillator can be synchronized to an external clock over a 1.5:1 frequency range. Burst mode operation at low load currents reduces switching losses and low dropout operation extends operating time in battery-powered systems. A forced continuous mode control pin can assist secondary winding regulation by disabling Burst Mode operation when the main output is lightly loaded. Fault protection is provided by foldback current limiting and an output overvoltage comparator. An external capacitor attached to the RUN/SS pin provides soft start capability for supply sequencing.
  • Highest efficiency current mode controller
  • No sense resistor required
  • 300mV Maximum current sense voltage
  • Stable high current operation
  • Dual N-channel MOSFET synchronous drive
  • Programmable fixed frequency with injection lock
  • Forced continuous mode control pin
  • Optional programmable soft start
  • Pin selectable output voltage
  • Foldback current limit
  • Output overvoltage protection
  • <30µA Logic controlled micropower shutdown

Product Information

Supply Voltage Min:
4.3V
Supply Voltage Max:
36V
No. of Outputs:
1 Output
Duty Cycle (%):
99%
Controller IC Case Style:
SOIC
No. of Pins:
16Pins
Switching Frequency:
165kHz
Topology:
Synchronous Buck (Step Down)
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Computers & Computer Peripherals
  • Automotive
  • Power Management

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):
.009072

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