PMIC – Voltage Regulators – DC-DC Switching Regulators

One of the most commonly used voltage regulator products today is the LMC7660IMX/NOPB DC-DC switching regulator. This device is a fixed frequency, non-synchronous, buck regulator that integrates a power switch with an LDO controller. It is designed to deliver a maximum of 3.0A from an input voltage of up to 24V. It is designed for use in space-constrained applications and operates with a switching frequency of 200 kHz.

Application field

The LMC7660IMX/NOPB DC-DC switching regulator is designed for use in portable electronics, such as mobile phones and other handheld devices, as well as wireless and wireline applications. It can be used for low power and high output voltage applications, for example for voltage regulation for RF and baseband processors, or for Bluetooth and WLAN transceivers. It is also suitable for many other applications, such as powering small LCD screens, automotive infotainment systems, and medical devices.

Working Principle

The LMC7660IMX/NOPB DC-DC switching regulator operates according to a fixed frequency, non-synchronous buck switching topology. It is designed to provide a constant output voltage, even when the input voltage varies. It works by using a MOSFET to alternately connect and disconnect the input voltage to the output and then latching it into a low or high state. During the high state, the MOSFET will be turned on and the output voltage will be delivered to the load. When the MOSFET is turned off, the output voltage will be discharged to a low voltage. This process repeats until the desired output voltage is maintained. The regulator also includes a low drop-out (LDO) controller, which is responsible for compensating the output voltage as the input voltage changes.

Conclusion

The LMC7660IMX/NOPB DC-DC switching regulator is a highly efficient, space-constrained fixed-frequency, non-synchronous buck regulator. It is designed for use in a wide range of applications, from portable electronics to automotive and medical devices. It is capable of delivering up to 3.0A from an input voltage of up to 24V, and has a switching frequency of 200 kHz. The regulator also includes an LDO controller, which ensures a constant output voltage, even when the input voltage changes.