FAN5307MP

Voltage Regulators - DC DC Switching Regulators Overview

The FAN5307MP is a high-efficiency, low-noise synchronous step-down DC-DC converter designed for battery-powered applications. It operates with an input voltage range of 2.5V to 5.5V and delivers up to 300mA of output current. The device features adjustable output voltage options ranging from 0.7V to VIN via an external divider, or fixed internal configurations. It utilizes a fixed frequency 1MHz PWM operation mode and incorporates a high-efficiency Power Save Mode for light loads. Key electrical characteristics include a 15µA quiescent current, soft start functionality, and dynamic output voltage positioning. The component supports 100% duty cycle low dropout operation and is housed in a 6-lead MLP 3x3mm package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous PWM current mode and Pulse Skip (Power Save) mode operation for optimized efficiency across load ranges
• Adjustable output voltage capability using an external voltage divider over a wide range
• High-efficiency power save mode combined with 100% duty cycle low dropout operation
• Integrated soft start and dynamic output voltage positioning for improved transient response

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable devices
• Cell phones
• Pocket PCs and PDAs
• Digital cameras
• Low power DSP supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix code (e.g., MPX) to confirm the exact package type and output voltage configuration, as the base part number covers multiple variants. Confirm availability status, as some listings indicate discontinued status for certain revisions. Ensure the selected variant matches the required input/output voltage parameters and thermal requirements for the target application environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring high efficiency in space-constrained portable electronics. The 1MHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the adjustable output option if custom voltage levels are needed, or choose fixed variants for simplified design. Evaluate the thermal performance within the 6-lead MLP package relative to the expected load current and ambient temperature conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

The FAN5307 belongs to Fairchild Semiconductor's family of high-efficiency step-down DC-DC converters. It is engineered specifically for mobile and battery-operated systems where power conservation and small form factors are critical. The device complements other converters in the series by offering a balance of current capacity and efficiency suitable for powering sensitive digital logic and memory components.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.