Overview

Features and Benefits

  • Single Inductor Architecture Allows VIN Above, Below or Equal to the Regulated VOUT
  • Synchronous Rectification: Up to 98% Efficiency
  • Wide VIN Voltage Range: 5V to 70V
  • ±1% Output Voltage Accuracy: 1V ≤ VOUT ≤ 70V
  • DCR or RSENSE Current Sensing
  • Peak Current Mode Control in Buck/Boost/Buck-Boost Mode
  • Programmable Input or Output Current Regulation
  • 7V NMOS Gate Drivers
  • Phase-Lockable Frequency (100kHz to 600kHz)
  • Multiphase/Multi-ICs Parallel Operation
  • Selectable Continuous or Pulse-Skipping Mode Operation and Inductor Peak Current Limits
  • Small 32-Lead 5mm × 5mm QFN Package

Product Details

The LTC7878 is a high performance buck-boost switching regulator controller that operates from an input voltage above, below or equal to the output voltage. The constant-frequency, peak current mode architecture allows a phase-lockable switching frequency of up to 600kHz, while a programmable input or output current loop regulates the average input or output current accurately supporting battery charging applications. With a wide 5V to 70V input and output range and seamless, low noise transitions between operating regions, the LTC7878 is ideal for industrial and telecom systems.

The LTC7878 features forced continuous mode (FCM)/pulse-skipping mode operation. It supports multiphase/multi-ICs parallel operation for high power applications. Additional features include 7V N-Channel gate drivers, smart EXTVCC auxiliary supply and programmable inductor peak current limit. A PGOOD pin indicates when the output is within 10% of its designed set point.

The LTC7878 is available in a low profile 32-Lead QFN package.

APPLICATIONS

  • Industrial and Telecom Systems
  • Distributed DC Power or Battery Systems

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice

Models for the following parts are available in LTspice:

LTC7878

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Sample & Buy


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Buy Now Pricing


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Sampling


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