LT1054 - Switched-Capacitor Voltage Converter with Regulator

Features

  • Output Current: 100mA (LT1054)
    125mA (LT1054L)
  • Reference and Error Amplifier for Regulation
  • Low Loss: 1.1V at 100mA
  • Operating Range:
    3.5V to 15V (LT1054)
    3.5V to 7V (LT1054L)
  • External Shutdown
  • External Oscillator Synchronization
  • Can Be Paralleled
  • Pin Compatible with the LTC®1044/ICL7660
  • Available in SW16 and SO-8 Packages

Typical Application

LT1054 Typical Application
LT1054 Typical Application

Description

The LT®1054 is a monolithic, bipolar, switched-capacitor voltage converter and regulator. The LT1054 provides higher output current than previously available converters with significantly lower voltage losses. An adaptive switch driver scheme optimizes efficiency over a wide range of output currents. Total voltage loss at 100mA output current is typically 1.1V. This holds true over the full supply voltage range of 3.5V to 15V. Quiescent current is typically 2.5mA.

The LT1054 also provides regulation, a feature not previously available in switched-capacitor voltage converters. By adding an external resistive divider a regulated output can be obtained. This output will be regulated against changes in both input voltage and output current. The LT1054 can also be shut down by grounding the feedback pin. Supply current in shutdown is less than 100μA.

The internal oscillator of the LT1054 runs at a nominal frequency of 25kHz. The oscillator pin can be used to adjust the switching frequency or to externally synchronize the LT1054.

The LT1054 is pin compatible with previous converters such the LTC1044/LTC7660.

Packaging

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

N-8,SO-8,CERDIP-8

LT1054 Package Drawing
LT1054 Package Drawing
LT1054 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LT1054CN8 PDIP 8 C $3.25 $2.65 View
LT1054CN8#PBF PDIP 8 C $3.25 $2.65 View
LT1054CS8 SO 8 C $3.40 $2.80 View
LT1054CS8#PBF SO 8 C $3.40 $2.80 View
LT1054CS8#TR SO 8 C $2.86 View
LT1054CS8#TRPBF SO 8 C $2.86 View
LT1054CSW SO 16 C $4.00 $3.15 View
LT1054CSW#PBF SO 16 C $4.00 $3.15 View
LT1054CSW#TR SO 16 C $3.21 View
LT1054CSW#TRPBF SO 16 C $3.21 View
LT1054IN8 PDIP 8 I $4.75 $3.85 View
LT1054IN8#PBF PDIP 8 I $4.75 $3.85 View
LT1054IS8 SO 8 I $5.75 $4.50 View
LT1054IS8#PBF SO 6 I $5.75 $4.50 View
LT1054IS8#TR SO 8 I $4.56 View
LT1054IS8#TRPBF SO 8 I $4.56 View
LT1054ISW SO 16 I $5.75 $4.65 View
LT1054ISW#PBF SO 16 I $5.75 $4.65 View
LT1054ISW#TR SO 16 I $4.71 View
LT1054ISW#TRPBF SO 16 I $4.71 View
LT1054LCS8 SO 8 C $2.30 $2.00 View
LT1054LCS8#PBF SO 8 C $2.30 $2.00 View
LT1054LCS8#TR SO 8 C $2.06 View
LT1054LCS8#TRPBF SO 8 C $2.06 View
LT1054MJ8 8 M View
Buy NowRequest Samples
* 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

  • Voltage Inverter
  • Voltage Regulator
  • Negative Voltage Doubler
  • Positive Voltage Doubler

Product Notifications

Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.

Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.

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

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice IV
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice IV does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As". After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice IV:
LT1054
LT1054L

Technical Support