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LINEAR TECHNOLOGY  LTC3851EGN#PBF  DC/DC Controller, High Performance, 4V to 38V, 1 Output, Synchronous Buck, 790kHz, SSOP-16

LINEAR TECHNOLOGY LTC3851EGN#PBF
Technical Data Sheet (329.81KB) EN See all Technical Docs

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

Product Overview

The LTC3851EGN#PBF is a high-performance synchronous step-down Switching Regulator Controller drives an all N-channel synchronous power MOSFET stage. The constant frequency current-mode architecture allows a phase-lockable frequency of up to 750kHz. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3851 features a precision 0.8V reference that is compatible with a wide 4 to 38V input supply range. The TK/SS pin ramps the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The MODE/PLLIN pin selects among Burst Mode operation, pulse skipping mode or continuous inductor current-mode at light loads and allows the IC to be synchronized to an external clock.
  • ±1% Output voltage accuracy
  • Dual N-channel MOSFET synchronous drive
  • Adjustable output voltage soft-start or tracking
  • Output current foldback limiting
  • Output overvoltage protection
  • Selectable continuous, pulse-skipping or burst mode operation at light loads

Product Information

Supply Voltage Min:
4V
Supply Voltage Max:
38V
No. of Outputs:
No. of Outputs:
1 Output
Duty Cycle (%):
99%
Controller IC Case Style:
SSOP
No. of Pins:
16Pins
Switching Frequency:
790kHz
Topology:
Synchronous Buck (Step Down)
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualifications Standard:
-
MSL:
MSL 1 - Unlimited
Output Current:
50 mA
SVHC:
No SVHC (17-Dec-2015)
Output Voltage:
5.5 V

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Applications

  • Automotive;
  • Communications & Networking;
  • Industrial;
  • Power Management

Legislation and Environmental

Moisture Sensitivity Level:
MSL 1 - Unlimited
Product Traceability
RoHS Compliant:
Yes
Authorized Distributor