LTC3125

RECOMMENDED FOR NEW DESIGNS

1.2A Synchronous Step-Up DC/DC Converter with Input Current Limit

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Part Models
2
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Starting From $2.71
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Part Details

  • Programmable Average Input Current Limit
  • 5% Input Current Accuracy
  • 200mA to 1000mA Program Range
  • VIN: 1.8V to 5.5V, VOUT: 2V to 5.25V
  • Supports High Current GSM/GPRS Load Burst
  • VIN > VOUT Operation
  • 1.6MHz Fixed Frequency Operation
  • Internal Current Sense Resistor
  • 1.2A Peak Current Limit
  • Up to 93% Efficiency
  • Output Disconnect in Shutdown
  • Soft-Start
  • Low Quiescent Current Burst Mode® Operation (15μA)
  • Available in 2mm × 3mm × 0.75mm DFN Package
LTC3125
1.2A Synchronous Step-Up DC/DC Converter with Input Current Limit
PCMCIA/CompactFlash (3.3V/500mA Max), 4V GSM Pulsed Load Efficiency vs Load Current 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:

  • LTC3125
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
DC1267A

LTC3125EDCB Demo Board | 1.5A Switch, 3.3V Input, VOUT = 4V @ 500mA (2A Pulses)

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Product Details

Demonstration circuit 1267A is a step-up DC/DC regulator featuring the LTC3125EDCB and is ideally suited for pulsed load applications where the input current needs to be limited. Demonstration circuit 1267A is configured for 500mA maximum input current limit and can handle pulsed load currents of up to 2A, with duty cycles of up to 15%. The input voltage range is 3.3V ±10%.
DC1267A
LTC3125EDCB Demo Board | 1.5A Switch, 3.3V Input, VOUT = 4V @ 500mA (2A Pulses)
DC1267A - Schematic

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