LX7167CLD

PMIC - Voltage Regulators - DC DC Switching Regulators

LX7167CLD is a high-efficiency, high-performance switching regulator. It is a DC-DC synchronous buck converter with a wide input voltage range of 3.3V to 60V, adjustable output voltage support and a maximum output current of 6A. The device enables regulated output voltage to be set using an external resistor, making it suitable for a variety of applications that require precise voltage, such as powering microcontrollers, FPGAs, or other integrated circuits.

The LX7167CLD operates from an input voltage between 3.3V and 60V and supports an adjustable output voltage range from 0.9V to between 3.3V and 45V. The output voltage can be set using only two external resistors and the switch frequency is adjustable up to 1 MHz providing excellent flexibility for power-sensitive applications. This device also has a low quiescent current to keep the power usage low. Furthermore, the device includes a wide range of protection features, such as over-temperature, over-current, and under/over voltage protection.

Uses of LX7167CLD

The adjustable output voltage feature of the LX7167CLD makes it suitable for many applications. It can be used in memory card reader cards, routers, portable devices, and notebook PCs. The device can also be used in automotive applications, such as passenger infotainment systems, parking sensors, and interior lighting. The device can also be used in industrial and medical applications, such as PLCs, battery-powered medical instruments, and robotics.

Working Principle of LX7167CLD

The LX7167CLD is a synchronous buck converter with a high-frequency pulse-width modulation (PWM) control system. It has a fixed off time (FOT) PWM control architecture and the switch frequency is adjustable up to 1 MHz. The fixed off time PWM control system is used to eliminate the need for loop compensation, as well as allowing for fast transient response and high efficiency operation. The device operates in a single-ended topology, with one n-channel MOSFET as the main switch and an external Schottky diode as the freewheeling element.

The current mode PWM control system of the LX7167CLD is composed of two parts. The first part is the current limit and the second part is the PWM oscillator. The current limit circuit senses the switch current and when it reaches a certain value, it will generate a signal to shut off the main switch. This prevents the switch current from exceeding the set limit and protects the lower part of the circuit. The PWM oscillator will produce a signal at a desired frequency and it is used to modulate the pulse width of the main switch. This will control the output voltage of the converter. By adjusting the frequency and pulse width of the main switch, the output voltage can be precisely regulated.

The LX7167CLD supports a wide range of applications due to its adjustable output voltage feature and its low power consumption. Furthermore, its current limit and PWM oscillator control system allows for accurate and reliable voltage regulation. With its wide input voltage range and high efficiency ratings, it is suitable for many different applications, ranging from automotive to industrial and medical.