LT1054
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LT1054

Switched-Capacitor Voltage Converter with Regulator

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Part Details
Part Models 12
1ku List Price Starting From $2.76
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 LTC1044/ICL7660
  • Available in SW16 and SO-8 Packages
Additional Details
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The LT1054 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/ICL7660.

Applications

  • Voltage Inverter
  • Voltage Regulator
  • Negative Voltage Doubler
  • Positive Voltage Doubler
Part Models 12
1ku List Price Starting From $2.76

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT1054CN8#PBF
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LT1054CS8#PBF
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LT1054CS8#TRPBF
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LT1054CSW#PBF
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LT1054CSW#TRPBF
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LT1054IN8#PBF
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LT1054IS8#PBF
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LT1054IS8#TRPBF
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LT1054ISW#PBF
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LT1054ISW#TRPBF
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LT1054LCS8#PBF
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LT1054LCS8#TRPBF
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0241

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

Nov 14, 2022

- 22_0254

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)

LT1054CS8#PBF

PRODUCTION

LT1054CS8#TRPBF

PRODUCTION

LT1054LCS8#PBF

PRODUCTION

LT1054LCS8#TRPBF

PRODUCTION

Jun 11, 2021

- 21_0060

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LT1054CS8#PBF

PRODUCTION

LT1054CS8#TRPBF

PRODUCTION

LT1054IS8#PBF

PRODUCTION

LT1054IS8#TRPBF

PRODUCTION

LT1054LCS8#PBF

PRODUCTION

LT1054LCS8#TRPBF

PRODUCTION

Aug 10, 2022

- 22_0176

Laser Top Mark Conversion for SOIC_W Packages Assembled in ADPG [PNG] and UTL

LT1054CSW#PBF

PRODUCTION

LT1054CSW#TRPBF

PRODUCTION

LT1054ISW#PBF

PRODUCTION

LT1054ISW#TRPBF

PRODUCTION

Dec 14, 2023

- 22_0255

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0241

arrow down

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

arrow down

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

Nov 14, 2022

- 22_0254

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)

LT1054CS8#PBF

PRODUCTION

LT1054CS8#TRPBF

PRODUCTION

LT1054LCS8#PBF

PRODUCTION

LT1054LCS8#TRPBF

PRODUCTION

Jun 11, 2021

- 21_0060

arrow down

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LT1054CS8#PBF

PRODUCTION

LT1054CS8#TRPBF

PRODUCTION

LT1054IS8#PBF

PRODUCTION

LT1054IS8#TRPBF

PRODUCTION

LT1054LCS8#PBF

PRODUCTION

LT1054LCS8#TRPBF

PRODUCTION

Aug 10, 2022

- 22_0176

arrow down

Laser Top Mark Conversion for SOIC_W Packages Assembled in ADPG [PNG] and UTL

LT1054CSW#PBF

PRODUCTION

LT1054CSW#TRPBF

PRODUCTION

LT1054ISW#PBF

PRODUCTION

LT1054ISW#TRPBF

PRODUCTION

Dec 14, 2023

- 22_0255

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

Software and Part Ecosystem

Software and Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

ADALM-BUCK-ARDZ

Companion board for Buck Converter Basics Active Learning lab exercise

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ADALM-BUCK-ARDZ

Companion board for Buck Converter Basics Active Learning lab exercise

Companion board for Buck Converter Basics Active Learning lab exercise

Features and Benefits

  • Allows all of the experiments from the Buck Converter Basics lab exercise to be performed without having to build the circuit on a breadboard.
  • Illustrates important concepts related to buck regulators
    • Inductor Ripple Current vs. inductance
    • Output ripple vs. output capacitance
    • Open-loop vs. closed loop operation
  • Compatible with Arduino Uno for demonstrating closed-loop operation and duty cycle vs. voltage relationships.

Product Detail

The Buck Converter Basics Active Learning lab exercise demonstrates key concepts related to buck converters, but the circuits can be difficult to assemble with parts from the ADALP2000 parts kit. The ADALM-BUCK-ARDZ board allows all of the experiments from to be performed quickly and easily without having to build and debug the circuit on a breadboard.

Tools & Simulations

Tools & Simulations 1

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, 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.

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