LT1054

PRODUCTION

Switched-Capacitor Voltage Converter with Regulator

Data Sheet (Rev. I) Product Selection Table

Part Models: 12
1ku List Price: Starting From $2.76

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Overview

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

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

Documentation

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT1054CN8#PBF	8-Lead PDIP (Narrow 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1054CS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1054CS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1054CSW#PBF	16-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1054CSW#TRPBF	16-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1054IN8#PBF	8-Lead PDIP (Narrow 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1054IS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1054IS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1054ISW#PBF	16-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1054ISW#TRPBF	16-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1054LCS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1054LCS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 8, 2024 - 24_0234 Migrating Bottom Trace Code Marking to Top Side Laser Marking for PDIP Package
		PCN24_0234_Form Material_Report Marking Comparison
LT1054CN8#PBF	PRODUCTION
LT1054IN8#PBF	PRODUCTION
Oct 11, 2022 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package
		PCN22_0241_Form Material_Report Qualification Results Summary
LT1054CN8#PBF	PRODUCTION
LT1054IN8#PBF	PRODUCTION
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]
		PCN22_0172_Form Material_Report Delta Qualification Matrix
LT1054CN8#PBF	PRODUCTION
LT1054IN8#PBF	PRODUCTION
Nov 14, 2022 - 22_0254 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)
		PCN22_0254_Form Material_Report Qualification Results Summary Delta Qualification Matrix
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
		PCN21_0060_Form Material_Report Delta Qualification Matrix
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
		PCN22_0176_Form Material_Report Delta Qualification Matrix
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)
		PCN22_0255_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT1054IS8#PBF	PRODUCTION
LT1054IS8#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Charge Pumps 2
LTC3261	RECOMMENDED FOR NEW DESIGNS	High Voltage, Low Quiescent Current Inverting Charge Pump
LTC3260	RECOMMENDED FOR NEW DESIGNS	Low Noise Dual Supply Inverting Charge Pump

Tools & Simulations

LTspice 1

LT1054 Demo Circuit - Negative Doubler with Regulator (3.5-15V to -5 @ 100mA)

Models for the following parts are available in LTspice:

LT1054
LT1054L

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

Companion board for Buck Converter Basics Active Learning lab exercise

Buy Now View Details

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 Details

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.

Resources

ADALM-BUCK-ARDZ User Guide
7/29/2019

ADALM-BUCK-ARDZ Design & Integration Files
1/9/2023

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