LTC3522

RECOMMENDED FOR NEW DESIGNS

Synchronous 400mA Buck-Boost and 200mA Buck Converters

Data Sheet Product Selection Table
Part Models
2
1ku List Price
Starting From $3.02
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Part Details

  • Dual High Efficiency DC/DC Converters:
    • Buck-Boost (VOUT: 2.2V to 5.25V, IOUT: 400mA for VIN > 3V, VOUT = 3.3V)
    • Buck (VOUT: 0.6V to VIN, IOUT: 200mA)
  • 2.4V to 5.5V Input Voltage Range
  • Pin Selectable Burst Mode Operation
  • 25µA Total Quiescent Current for Both Converters in Burst Mode Operation
  • Independent Power Good Indicator Outputs
  • Integrated Soft-Start
  • Thermal and Overcurrent Protection
  • <1µA Quiescent Current in Shutdown
  • Small 0.75mm × 3mm × 3mm QFN Package
LTC3522
Synchronous 400mA Buck-Boost and 200mA Buck Converters
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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Software Resources

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Hardware Ecosystem

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Single-Supply Monitors 1
LTC2934
PRODUCTION Ultra-Low Power Adjustable Supervisor with Power-Fail Output
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTC3522
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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
DC1177A

LTC3522EUD Demo Board | Buck-Boost Plus Buck, 2.4V ≤ VIN ≤ 4.3V, VOUT1 = 3.3V @ 300mA, VOUT2 = 1.8V @ 200mA

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Product Details

Demonstration circuit DC1177 is a micropower dual Buck-Boost/Buck synchronous converter based on the LTC3522 monolithic regulator. The DC1177 has an input voltage range of 2.4V to 4.2V and outputs 3.3V @ 300mA and 1.8V @ 200mA.
DC1177A
LTC3522EUD Demo Board | Buck-Boost Plus Buck, 2.4V ≤ VIN ≤ 4.3V, VOUT1 = 3.3V @ 300mA, VOUT2 = 1.8V @ 200mA
DC1177A - Schematic

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