AP1501A-33K5G-13

Voltage Regulators - DC DC Switching Regulators Overview

The AP1501A-33K5G-13 is a monolithic synchronous step-down DC/DC converter from Diodes Incorporated. It operates with an input voltage range of 4.5V to 40V and provides a fixed 3.3V output at up to 3A load current. The device integrates high-side and low-side power MOSFETs, eliminating the need for external transistors. It features a fixed switching frequency of 150kHz and includes internal compensation for stable operation. The component supports surface-mount installation in a TO-263-5 package and functions within a temperature range of -20°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification with built-in high-side and low-side MOSFETs
• Fixed 3.3V output voltage configuration
• Internal frequency compensation for simplified external component requirements

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring efficient step-down conversion
• Industrial control modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix K5G-13 against the manufacturer datasheet to confirm the exact pinout, thermal pad configuration, and tape-and-reel specifications. Ensure the selected variant matches the required fixed 3.3V output and TO-263-5 package dimensions for your PCB layout.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 3.3V rail is needed from a 4.5V to 40V source. It is suitable for applications prioritizing efficiency through synchronous rectification over adjustable output flexibility. Consider the thermal performance of the TO-263 package under full 3A load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the AP1501 series of PWM buck converters. The AP1501A variant specifically denotes the synchronous version capable of driving higher loads without external drivers. The AP1501A-33K5G-13 is a fixed-output member of this family, distinct from adjustable variants like the AP1501-K5G-13.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for AP1501A-50K5G-13 if a 5V output is required instead. Verify compatibility with AP1501-K5G-13 if an adjustable output voltage is preferred, noting the difference in feedback resistor requirements.