ADP1110AN-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The ADP1110AN-3.3 is a micropower step-up/step-down switching regulator manufactured by Analog Devices Inc. It operates from an input voltage range of 2 V to 30 V, supporting both boost and buck configurations. The device features a fixed 3.3 V output with an internal 1 A power switch and operates at a frequency of 72 kHz. Designed for minimal external component count, it includes user-adjustable current limit protection and a low battery detector. The unit is housed in an 8-pin DIP or SO-8 package, suitable for portable applications requiring efficient voltage conversion.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Supports step-up, step-down, and inverting operation modes
• Integrates an internal 1 A power switch
• Includes low battery detector and adjustable current limit
• Requires only three external components for configuration

Voltage Regulators - DC DC Switching Regulators Applications

• Portable instruments and handheld devices
• Battery backup supplies and uninterruptible power systems
• Flash memory VPP generators
• Cellular telephones and laptop computers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., AN) against the manufacturer's latest datasheet to confirm package type and temperature rating. Ensure the fixed 3.3 V output aligns with system requirements. Check for RoHS compliance status and lead times due to potential limited availability. Confirm pinout compatibility if replacing legacy components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a single regulator must handle both higher-to-lower and lower-to-higher voltage conversions efficiently. The fixed 3.3 V output simplifies design for standard logic levels. Consider the 72 kHz switching frequency for EMI constraints and the internal 1 A limit for load requirements. Evaluate the need for the integrated low battery detector for power management strategies.

Voltage Regulators - DC DC Switching Regulators Part Context

The ADP1110 belongs to a family of micropower switching regulators designed for high efficiency in space-constrained environments. It complements linear regulators by offering better performance under varying input-output voltage differentials. The series supports various output voltages, with the -3.3 variant targeting common digital supply rails.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other micropower step-up/step-down regulators from Analog Devices such as the ADP1111 series, which offers similar functionality but may have different switching frequencies or package options. Verify equivalent current limits and operating voltage ranges before substitution.