L7986TATR

PMIC - Voltage Regulators - DC DC Switching Regulators

The L7986TATR is a dedicated step down synchronous DC-DC regulator that provides a simple and efficient solution for low voltage, power supply applications. With a wide input voltage range, it can be used in a variety of settings. It offers fast transient response and ultra low noise performance, making it an excellent choice for applications that require reliable power supply.

Features of the L7986TATR

The L7986TATR is a good choice of regulator for applications that require a wide input voltage range and high current. It offers up to 3A output current and up to 3.6V output voltage. It is a synchronous switch mode regulator that operates with a switching frequency of 300kHz, allowing for a high efficiency and fast transient response. The device also has an adjustable output voltage and the option of enabling or disabling the pulse skip mode, which allows the device to reduce switch losses.

The L7986TATR offers very low noise operation and high stability. With fast settling times and low jitter, it is an excellent choice for applications that require reliable and highly accurate power supplies. It also features undervoltage and overvoltage lockouts, which protect both the input and output from any accidental over or undervoltage events.

Working Principle of the L7986TATR

The L7986TATR utilizes a non-isolated synchronous step-down DC-DC converter operating from an input voltage of up to 20V. The device operates in continuous conduction mode (CCM) with a fixed switching frequency of 300kHz. The inductor reduces the ripple of the input voltage, while the output voltage is regulated by the internal power switch.

When the inductor is charged and its ramp current reaches the control threshold, the control logic turns off the power switch, allowing the energy stored in it to flow to the output capacitor. At this point, the inductor begins to discharge, and the internal control logic detects the changing inductor current and turns the power switch back on, allowing the inductor to recharge. This cycle is repeated until the output voltage is close enough to the desired value. The power switch is then turned off completely and the output voltage is maintained at the desired level.

Applications of the L7986TATR

The L7986TATR is a versatile device with a wide range of applications. It can be used for power supplies for a variety of industrial and consumer applications, including digital logic circuits, microcontrollers, DSPs, RF amplifiers, and medical imaging devices. It is also suitable for battery-powered systems, providing an efficient and reliable power supply.

The L7986TATR is well suited for applications that require fast transient response and low output noise, such as automotive, telecommunication and audio systems. With its wide input voltage range, adjustable output voltage, and overvoltage and undervoltage lockout, it is ideal for any power supply design.