Overview

Features and Benefits

  • Ultralow Power: IIN = 13µA
  • Regulated Output Voltage: 3.3V ±4%, 5V ±4%
  • 5V Output Current: 50mA (VIN ≥ 3.0V)
  • 3.3V Output Current: 40mA (VIN ≥ 2.5V)
  • No Inductors Needed
  • Very Low Shutdown Current: <1µA
  • Shutdown Disconnects Load from VIN
  • Internal Oscillator: 600kHz
  • Short-Circuit and Overtemperature Protected
  • Ultrasmall Application Circuit: (0.052 Inch²)
  • 6-Pin SOT-23 Package

Product Details

The LTC1754 is a micropower charge pump DC/DC converter that produces a regulated output. The input voltage range is 2V to 4.4V for 3.3V output and 2.7V to 5.5V for 5V output. Extremely low operating current and a low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) make the LTC1754 ideally suited for small, battery-powered applications. The total component area of the application circuit shown below is only 0.052 inch².

The LTC1754 operates as a Burst Mode switched capacitor voltage doubler to produce a regulated output. It has thermal shutdown capability and can survive a continuous short circuit from VOUT to GND.

The LTC1754 is available in a 6-pin SOT-23 package.

Applications

  • SIM Interface Supplies for GSM Cellular Telephones
  • White LED Power Supplies
  • Li-Ion Battery Backup Supplies
  • Handheld Computers
  • Smart Card Readers
  • PCMCIA Local 5V Supplies

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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:

ltc1754-3
LTC1754-3.3
LTC1754-5

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.

Discussions

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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