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LTC3708EUH#PBF

DC/DC Controller, 2-Phase, 4.5V to 36V, 2 Outputs, Synchronous Buck, QFN-32

LINEAR TECHNOLOGY LTC3708EUH#PBF

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Manufacturer Part No:
LTC3708EUH#PBF
Order Code:
1273949
Technical Datasheet:
LTC3708EUH#PBF   Datasheet
See all Technical Docs

Product Overview

The LTC3708EUH#PBF is a 2-phase dual synchronous step-down Switching Regulator with output voltage up/down tracking capability. The IC allows either coincident or ratiometric tracking. Multiple LTC3708s can be daisy-chained in applications requiring more than two voltages to be tracked. Power supply sequencing is accomplished using an external soft-start timing capacitor. The LTC3708 uses a constant on-time, valley current-mode control architecture to deliver very low duty factors without requiring a sense resistor. Operating frequency is selected by an external resistor and is compensated for variations in input supply voltage. An internal phase-locked loop allows the IC to be synchronized to an external clock. Fault protection is provided by an output overvoltage comparator and an optional short-circuit shutdown timer. The regulator current limit level is user programmable. A wide supply range allows voltages as high as 36V to be stepped down to 0.6V output.
  • Very fast transient response
  • Programmable output voltage up/down tracking
  • 2-phase operation reduces input capacitance
  • 0.6V ±1% Output voltage reference
  • External frequency synchronization
  • Monotonic soft-start
  • Onboard high current MOSFET drivers
  • Adjustable cycle-by-cycle current limit
  • Instant output overvoltage protection
  • Optional short-circuit shutdown timer
  • Power good output with 100µs Masking

Applications

Computers & Computer Peripherals, Communications & Networking, Power Management

Product Information

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:
4.5V

:
36V

:
2 Output

:
50%

:
QFN

:
32Pins

:
-

:
Synchronous Buck (Step Down)

:
-40°C

:
85°C

:
-

:
-

:
MSL 1 - Unlimited
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Technical Docs (2)

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Rs.896.05

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