FAN5602MP45X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN5602MP45X is a universal step-up/step-down charge pump regulated DC/DC converter manufactured by Fairchild Semiconductor. It operates with an input voltage range of 2.7V to 5.5V and delivers up to 100mA output current at a 4.5V output setting when the input is 3.6V. The device features low-noise constant-frequency operation under heavy loads and high-efficiency pulse-skip mode for light loads. It supports multiple switch configurations including 1:3, 1:2, 2:3, 1:1, 3:2, 2:1, and 3:1 ratios, achieving peak efficiency of 92% with ±3% output voltage accuracy.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Supports universal step-up and step-down voltage conversion through configurable internal switch matrices.
• Provides low-noise constant-frequency operation during heavy load conditions to maintain stable power delivery.
• Utilizes pulse-skip frequency modulation to ensure high efficiency during light load scenarios.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring flexible voltage regulation from single-cell sources
• Battery-powered systems needing efficient step-up or step-down conversion
• Applications demanding low noise performance in power-sensitive circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MP45X' against official Fairchild or ON Semiconductor documentation to confirm the exact output voltage configuration and package type. Ensure compatibility with existing PCB footprints, as the MLP-8 package dimensions must match design constraints. Cross-reference with updated part numbers if the manufacturer has migrated naming conventions following corporate acquisitions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range and bidirectional conversion capability are required within a compact footprint. Consider the 100mA output limit and 92% peak efficiency for power budget calculations. Evaluate thermal management requirements based on the MLP-8 package and expected load currents across the full operating temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the FAN5602 family of charge pump regulators designed for portable applications. It replaces older linear regulators or less efficient switching solutions by offering adjustable output voltages via external resistor networks or fixed configurations. The technology integrates control logic, switches, and capacitors into a small surface-mount package to minimize board space.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct equivalents such as the FAN5602MP33X for different fixed output voltages. Verify pin-to-pin compatibility and electrical specifications before substituting. Consult official cross-reference tools for validated alternatives that meet identical functional and mechanical requirements.