Datasheet for the XLSEMI XL4005, a 5A, 300KHz, 32V buck DC to DC converter with adjustable output and built-in protection features.
The XLSEMI XL4005 is a fixed-frequency PWM buck (step-down) DC/DC converter designed to drive a 5A load with high efficiency and low ripple. It operates with a wide input voltage range of 5V to 32V and features an adjustable output voltage from 0.8V to 30V. The device includes internal frequency compensation, a fixed 300KHz oscillator, and built-in protections such as thermal shutdown, current limit, and output short protection. When short protection is triggered, the operating frequency reduces from 300KHz to 60KHz to minimize stress.
| Input Voltage Range | 5V to 32V |
|---|---|
| Output Voltage Range | 0.8V to 30V |
| Switching Frequency | 300KHz |
| Maximum Output Current | 5A |
| Feedback Voltage | 0.8V |
| Efficiency | 90% |
| Operating Junction Temperature | -40 to 125 °C |
| Package Type | TO-263-5L |
The XL4005 has a fixed switching frequency of 300KHz.
The operation frequency reduces from 300KHz to 60KHz.
The feedback threshold voltage is 0.8V.