LTC3442

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Micropower Synchronous Buck-Boost DC/DC Converter with Automatic Burst Mode Operation

Data Sheet Product Selection Table
Part Models
2
1ku List Price
Starting From $5.25
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Part Details

  • Regulated Output with Input Voltages Above, Below, or Equal to the Output
  • Single Inductor, No Schottky Diodes Required
  • Manual or Programmable Automatic Burst Mode Operation
  • Programmable Average Input Current Limit
  • Up to 1.2A Continuous Output Current from a Single Lithium-Ion Cell
  • High Efficiency: Up to 95%
  • Output Disconnect in Shutdown
  • 2.4V to 5.5V Input Range
  • 2.4V to 5.25V Output Range
  • 35µA Quiescent Current in Burst Mode Operation
  • Programmable Frequency from 300kHz to 2MHz
  • <1µA Shutdown Current
  • Small, Thermally Enhanced 12-Lead (4mm × 3mm) DFN Package
LTC3442
Micropower Synchronous Buck-Boost DC/DC Converter with Automatic Burst Mode Operation
Efficiency vs VIN Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LTC3442
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.

Evaluation Kits

eval board
schematic 1
DC799A

LTC3442EDE Demo Board | Synchronous Buck-Boost, 2.4V ≤ VIN ≤ 5.25V, VOUT = 3.3V @ 1.2A

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Product Details

Demonstration Circuit 799 is a high efficiency synchronous Buck-Boost converter using the LTC3442. The input range is from 2.4V to 5.5V, making it ideal for single-cell Lithium-Ion or three-cell NiCd/NiMH battery applications. The output voltage is set at 3.3V. For 2.7V minimum input voltage, this converter can provide up to 1.2A load current. A different output voltage in the range of 2.4V to 5.25V can be obtained by changing one of the feedback resistors.
DC799A
LTC3442EDE Demo Board | Synchronous Buck-Boost, 2.4V ≤ VIN ≤ 5.25V, VOUT = 3.3V @ 1.2A
DC799A - Schematic

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