Summary of 600 mA Constant On-Time Buck Regulator
The LM5017 is a 600 mA synchronous buck regulator featuring integrated high-side and low-side MOSFETs with a wide input range of 7.5 V to 100 V. Its constant on-time control eliminates the need for loop compensation, ensuring excellent transient response and high step-down ratios while maintaining nearly constant frequency. A built-in high voltage startup regulator powers internal operations and gate drivers without requiring external Schottky diodes.
Parts used in the LM5017 Project:
- LM5017 Integrated Circuit
- High-Side Switch (Integrated)
- Low-Side Switch (Integrated)
- High Voltage Startup Regulator
- Internal Gate Drivers
The LM5017 is a 600 mA constant on-time synchronous buck regulator with built-in high side and low side MOSFETs. This device has a wide input voltage range from 7. 5 V to 100 V. The constant on-time control scheme used in this device doesn’t need loop compensation, delivers excellent transient response, and enables very high step-down ratios. The on-time varies inversely with the input voltage resulting in nearly constant frequency over the input voltage range. A high voltage startup regulator provides bias power for internal operation of the IC and for integrated gate drivers.
Features
- Wide 7.5-V to 100-V Input Range
- Integrated 100-V High-Side,
and Low-Side Switches - No Schottky Required
- Constant On-Time Control
- No Loop Compensation Required
For more detail: 600 mA Constant On-Time Buck Regulator
- What is the maximum input voltage for the LM5017?
The device supports a wide input voltage range from 7.5 V to 100 V. - Does the LM5017 require external Schottky diodes?
No, the design features no Schottky required. - How does the LM5017 handle loop compensation?
The constant on-time control scheme does not need loop compensation. - What type of switches are integrated into the LM5017?
It includes integrated 100-V high-side and low-side switches. - Can the LM5017 operate at very high step-down ratios?
Yes, the constant on-time control enables very high step-down ratios. - How is the operating frequency maintained over the input range?
The on-time varies inversely with the input voltage to result in nearly constant frequency. - What provides bias power for the internal operation of the IC?
A high voltage startup regulator provides bias power for internal operation and integrated gate drivers.
