on November 20th 33

Understanding the LT1054 Voltage Converter

The LT1054 is a reliable and versatile voltage converter designed to handle various tasks like inverting and regulating voltage. Its unique design minimizes power loss while maintaining stable output, even during input voltage changes. This article covers its features, pin configuration, CAD model, applications, and advantages, giving you a complete overview of how it can meet your circuit needs.

Catalog

Introduction to LT1054 Voltage Converter

The LT1054 is a versatile and efficient voltage converter designed to meet the needs of a wide range of applications. It combines a switched-capacitor design with a built-in regulator, providing reliable performance in various scenarios. What sets the LT1054 apart is its ability to deliver a stable output current with minimal power losses, even when the input voltage fluctuates. This makes it suitable for systems requiring consistent voltage levels without compromising efficiency. With its user-friendly features and adaptability, the LT1054 is a practical choice for those looking to achieve reliable voltage conversion in their projects.

LT1054 Pin Configuration

LT1054 CAD Model

LT1054 Symbol

LT1054 Footprint

LT1054 3D Model

Features of LT1054 Voltage Converter

Output Current: 100mA

The LT1054 is capable of providing a steady output current of 100mA. This allows it to be used in a variety of applications where a stable and reliable current is needed. Whether you're powering a small device or converting voltage for a more complex system, the LT1054 ensures that the current remains consistent, helping to maintain the performance and reliability of the system you're working with.

Reference and Error Amplifier for Regulation

With its built-in reference and error amplifier, the LT1054 ensures that the output voltage stays steady despite variations in the input voltage or load conditions. This feature allows you to achieve a regulated output, which is crucial for applications requiring consistent voltage, such as in precision electronics or sensitive components that need a reliable power supply.

Low Loss: 1.1V at 100mA

One of the standout features of the LT1054 is its low voltage loss, typically around 1.1V when supplying 100mA. This means that it operates more efficiently compared to other converters, reducing the power lost as heat and increasing the overall performance of your system. By keeping voltage losses low, you can maximize the efficiency of your circuit, making the LT1054 a great choice for energy-conscious applications.

Operating Range: 3.5V to 15V

The LT1054 works within an input voltage range of 3.5V to 15V, making it flexible enough for use in different types of circuits. Whether you're working with lower-voltage devices or systems that require higher input levels, the LT1054 adapts easily to meet the needs of your application, offering more versatility in design.

External Shutdown

The LT1054 includes an external shutdown feature that allows you to turn the device off when it's not needed, saving power and extending the life of your components. This feature is especially useful in systems where power consumption needs to be carefully managed, such as in battery-powered devices or low-power electronics.

External Oscillator Synchronization

The LT1054 allows for external oscillator synchronization, making it easy to align the converter with other systems in your design that rely on precise timing. This synchronization can help prevent interference and improve the overall stability of your circuit, ensuring that everything runs smoothly and efficiently without unwanted disruptions.

Can Be Paralleled

For systems requiring higher output current, the LT1054 can be paralleled with other converters. This feature allows you to increase the current output without compromising performance, providing flexibility in designs that demand higher power. By paralleling multiple LT1054 devices, you can achieve the necessary output while maintaining efficiency and reliability.

Pin Compatible with the LTC®1044/ICL7660

If you're upgrading or replacing components in an existing design, the LT1054 is pin-compatible with devices like the LTC1044 and ICL7660. This compatibility makes it easier to integrate the LT1054 into your projects without needing to change the layout or design significantly, saving time and effort when switching to a more efficient solution.

Available in SW16 and SO-8 Packages

The LT1054 is available in two package types: SW16 and SO-8. These compact packages make the LT1054 suitable for a wide range of applications, from small, portable devices to more complex systems. The choice of package allows for easier integration into different designs, providing flexibility while maintaining the performance and efficiency that the LT1054 offers.

Advantages of Using LT1054

The LT1054 stands out because it offers more current output than similar converters while keeping power losses low. Its design is optimized to work efficiently across different load conditions, making it highly adaptable. You can rely on its regulation feature to maintain a stable output, even when there are changes in the input voltage or the output current. This makes the LT1054 a dependable option for applications where steady performance is needed. Its compatibility with earlier devices like the LTC1044 and ICL7660 also adds to its usefulness, allowing seamless integration into existing setups.

Technical Specifications of LT1054

Technical specifications, features, characteristics, and components with comparable specifications of Linear Technology LT1054

Type	Parameter
Factory Lead Time	8 Weeks
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154, 3.90mm Width)
Surface Mount	YES
Operating Temperature	0°C~100°C TJ
Packaging	Tube
Published	2005
JESD-609 Code	e3
Part Status	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Number of Terminations	8
ECCN Code	EAR99
Terminal Finish	Matte Tin (Sn)
Terminal Position	DUAL
Terminal Form	GULL WING
Peak Reflow Temperature (°C)	260
Time@Peak Reflow Temperature (s)	30
Base Part Number	LT1054
JESD-30 Code	R-PDSO-G8
Function	Ratiometric, Step-Up
Number of Outputs	1
Voltage - Input (Max)	7V
Output Voltage	-5V
Output Type	Adjustable (Fixed)
Voltage - Input (Min)	3.5V
Analog IC - Other Type	SWITCHED CAPACITOR REGULATOR
Output Configuration	Positive or Negative
Voltage - Output (Min/Fixed)	2.5V -Vin 2Vin
Topology	Charge Pump
Control Mode	VOLTAGE-MODE
Frequency - Switching	25kHz
Synchronous Rectifier	No
Switcher Configuration	DOUBLER INVERTER
Length	4.9mm
Width	3.9mm
RoHS Status	ROHS3 Compliant

Functional Block Diagram of LT1054

Equivalents of LT1054

Model Number	Manufacturer	Description
LT1054LCS8	Analog Devices Inc	Switched Capacitor Regulator, 35kHz Switching Freq-Max, PDSO08
LT1054LCS8#PBF	Analog Devices Inc	Switched-Capacitor Voltage Converter with Regulator

Applications of LT1054

Voltage Inverter

The LT1054 can be used as a voltage inverter, converting a positive input voltage into a negative output voltage. This capability is useful in circuits requiring dual polarity power supplies, such as operational amplifiers or other analog systems. By providing an efficient and reliable way to invert voltage, the LT1054 simplifies designs and enhances functionality.

Voltage Regulator

With its regulation feature, the LT1054 maintains a steady output voltage regardless of fluctuations in the input voltage or changes in load conditions. This makes it ideal for applications that need a stable power supply, such as sensitive electronic components or precision devices. The ability to regulate voltage ensures that your circuit performs consistently and reliably.

Negative Voltage Doubler

The LT1054 can function as a negative voltage doubler, effectively doubling the magnitude of the input voltage while maintaining its negative polarity. This is particularly useful in applications requiring higher negative voltages, such as in powering certain types of sensors, analog circuits, or specific electronic components.

Positive Voltage Doubler

In addition to its negative voltage capabilities, the LT1054 can also operate as a positive voltage doubler, doubling the input voltage's magnitude while retaining its positive polarity. This application is valuable for circuits that require a higher positive voltage than what is available from the input supply, offering a simple and efficient way to boost voltage levels.

Typical Uses of LT1054

Basic Voltage Inverter

Bipolar Supply Doubler

Negative Voltage Doubler

Positive Voltage Doubler

5V to ±12V Converter

Package of LT1054

Manufacturer of LT1054

Linear Technology Corporation, now part of Analog Devices, is recognized for its dedication to creating and delivering high-quality analog integrated circuits. Their product range is designed to support diverse industries, including communications, automotive, medical, consumer electronics, and aerospace. By bridging the gap between analog and digital technologies, they provide solutions that enhance performance and reliability. Their offerings include power management systems, data conversion devices, signal conditioning tools, RF and interface ICs, μModule subsystems, and advanced wireless sensor network products, ensuring their relevance across a wide spectrum of applications.

Datasheet PDF

LT1054LCS8#PBF Datasheet:

LT1054LCS8#PBF.pdf