LT1054IPE4

Voltage Regulators - DC DC Switching Regulators Overview

The LT1054IPE4 is a monolithic bipolar switched-capacitor voltage converter and regulator manufactured by Texas Instruments. It operates within an input voltage range of 3.5 V to 15 V, delivering up to 100 mA of output current with a typical total voltage loss of 1.1 V at full load. The device features an internal oscillator running at a nominal frequency of 25 kHz, which supports external synchronization. Quiescent current is typically 2.5 mA, dropping below 100 µA in shutdown mode. It provides regulated output capability via an external resistive divider and is housed in an 8-pin PDIP package suitable for through-hole mounting.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated regulation using an internal reference and error amplifier allows for stable output voltage control against input and load variations.
• Adaptive switch driver scheme optimizes efficiency across a wide range of output currents while maintaining low voltage losses.
• External shutdown functionality enables supply current reduction to less than 100 µA when the feedback pin is grounded.
• Oscillator pin permits adjustment of switching frequency or external synchronization to system clocks.

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered systems requiring efficient voltage conversion from single-cell sources
• Instrumentation circuits needing isolated or inverted power rails
• Data acquisition systems utilizing switched-capacitor signal conditioning
• Portable equipment where low quiescent current and compact topology are critical

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'IPE4' corresponds to the industrial temperature grade (-40°C to +85°C) and PDIP-8 package configuration as documented in official Texas Instruments datasheets. Confirm RoHS compliance status and lead-free manufacturing details directly from the manufacturer's ordering information. Ensure compatibility with existing PCB footprints designed for standard DIP-8 components before finalizing procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when application requirements demand a regulated switched-capacitor solution with moderate current capabilities. The industrial temperature rating makes it suitable for environments exceeding commercial limits. Consider the 25 kHz switching frequency for EMI-sensitive designs, noting that external synchronization may be required to avoid interference. Evaluate the need for regulation versus unregulated conversion to determine if the additional complexity of the feedback network is justified by the stability benefits.

Voltage Regulators - DC DC Switching Regulators Part Context

The LT1054 series represents a class of high-performance switched-capacitor converters that integrate regulation features often absent in earlier generations. This family bridges the gap between simple charge pumps and complex switching regulators, offering a simplified design path for applications requiring both voltage inversion/boosting and precise output control. The device maintains pin compatibility with legacy parts like the LTC1044, facilitating upgrades in existing designs without board layout changes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LT1054L is a variant with a restricted input voltage range of 3.5 V to 7 V. Direct substitution requires verifying that the system input voltage does not exceed 7 V. Other pin-compatible alternatives include the ICL7660, though these lack the integrated regulation feature. Verify thermal performance and package availability when considering cross-references from other manufacturers.