LTC1754 - Micropower, Regulated 3.3V/5V Charge Pump with Shutdown in SOT-23

Features

  • 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

Typical Application

LTC1754 Typical Application
LTC1754 Typical Application

Description

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.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

ThinSOT

LTC1754 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC1754ES6-3.3 SOT-23 6 E $1.76 View
LTC1754ES6-3.3#PBF SOT-23 6 E $1.76 View
LTC1754ES6-3.3#TR SOT-23 6 E $1.76 $1.50 View
LTC1754ES6-3.3#TRM SOT-23 6 E $1.76 $1.52 View
LTC1754ES6-3.3#TRMPBF SOT-23 6 E $1.76 $1.52 View
LTC1754ES6-3.3#TRPBF SOT-23 6 E $1.76 $1.50 View
LTC1754ES6-5 SOT-23 6 E $1.76 View
LTC1754ES6-5#PBF SOT-23 6 E $1.76 View
LTC1754ES6-5#TR SOT-23 6 E $1.76 $1.50 View
LTC1754ES6-5#TRM SOT-23 6 E $1.76 $1.52 View
LTC1754ES6-5#TRMPBF SOT-23 6 E $1.76 $1.52 View
LTC1754ES6-5#TRPBF SOT-23 6 E $1.76 $1.50 View
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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 Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

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

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Design Tools

LTspiceIV

LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice IV

Models for the following parts are available in LTspice IV:
LTC1754-3.3
LTC1754-5

Technical Support