PAM2803AAF095

Overview

The PAM2803AAF095 is a high-power white LED driver IC manufactured by Diodes Incorporated. It operates as a boost DC-DC converter with a fixed switching frequency of 1 MHz, enabling the use of compact external inductors and ceramic capacitors. The device supports an input voltage range of 900 mV to 5.5 V and delivers a regulated output current up to 750 mA through a single channel. Designed for efficiency, it features a low feedback voltage of 95 mV to minimize power loss in the current sense resistor. The component is housed in a SOT-23-6 package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated boost topology with built-in switch for efficient step-up conversion
• Constant 1 MHz switching frequency allows for miniaturized passive components
• Low 95 mV feedback reference voltage reduces sense resistor power dissipation
• Includes short circuit and thermal protection mechanisms

Applications

• Driving high-power white LEDs from two-cell alkaline batteries
• Portable lighting devices requiring regulated constant current
• Battery-powered illumination systems with space constraints

Procurement Notes

Verify the specific suffix AAF095 against the official Diodes Incorporated datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure the ordering quantity aligns with the manufacturer's standard packaging specifications. Confirm RoHS compliance status if required by your assembly process. Cross-reference the active lifecycle status to ensure long-term availability for production.

Selection Notes

Select this component when a boost converter topology is required for single-channel LED driving from low-voltage sources. The 1 MHz frequency is suitable for designs prioritizing small footprint over extreme efficiency at light loads. Verify that the load current does not exceed the 750 mA limit. Consider the SOT-23-6 package dimensions for PCB layout compatibility. Ensure the input voltage source can sustain the required current without dropping below the minimum operating threshold.

Part Context

This part belongs to the PAM2803 series of LED drivers from Diodes Incorporated. It is specifically engineered for portable applications where battery life and board space are critical. The series utilizes a synchronous or non-synchronous boost architecture depending on the variant, optimized for driving high-brightness LEDs. It serves as a solution for replacing linear regulators in battery-operated lighting to improve overall system efficiency.

Replacement Considerations

Direct substitutes include other parts within the PAM2803 family such as PAM2803FBAF095, PAM2803GNDAF095, PAM2803SHDNAF095, and PAM2803SWAF095. These variants share similar functional descriptions but may differ in internal configuration or suffix codes. Verify pin compatibility and electrical parameters before substitution.