LTC1707IS8#PBF

PMIC - Voltage Regulators - DC DC Switching Regulators

The LTC1707IS8#PBF is an advanced switching regulator designed to produce a regulated output voltage by converting an unregulated DC power supply to an adjustable, regulated output. It uses special circuitry to enhance efficiency and reduce output voltage ripple in both step-up and step-down voltage conversion applications. The basic topology of the LTC1707IS8#PBF consists of an inductor, a MOSFET switch, and a few passive components.

The working principle of the LTC1707IS8#PBF relies on the switching of the transistor which turned ON by the control logic. When the transistor is ON, the output voltage is ‘pushed’ onto the output load, and when the transistor is OFF, the voltage on the circuit’s output is ‘pulled’ back to zero. This process is repeated periodically to achieve the output voltage. This article will discuss the working principle of the LTC1707IS8#PBF.

When the MOSFET is ON, it allows current to flow from VIN to VOUT, increasing the output voltage from zero. The peak current flowing through the inductor causes a magnetic field, whose polarity depends on the direction of current. When the MOSFET opens, the current in the inductor does not change instantaneously, as the magnetic field stored in the inductor has to collapse first. The voltage developed across the inductor results in a voltage spike which is higher than the input voltage. This voltage spike is the actual voltage that the output load receives, and it is referred to as the flyback voltage. This voltage spike is used to ‘pull’ the output voltage back to zero. The output voltage is kept in positive territory by the fact that the current in the inductor always flows towards VOUT. The feedback circuit senses the output voltage and adjusts the on/off of the transistor accordingly.

The LTC1707IS8#PBF is ideal for applications where a regulated output voltage or current is required over a wide range of input voltages. The output voltage or current can be programmed by adjusting a single external resistor. As the capacitors and external components of the regulator can be changed in size to accommodate higher power requirements, this makes the LTC1707IS8#PBF well-suited for a wide variety of applications. Such applications include core processor power supplies in notebook computers, microprocessor power supplies for set top boxes and digital pictures frames, LED lighting, charge pumps, and LCD panel supplies.

In conclusion, the LTC1707IS8#PBF is a switching regulator from Linear Technology Corporation which provides a reliable, efficient, and adjustable DC to DC power solution for a variety of low voltage applications. It features a low surge current and low noise operation, making it ideal for battery-powered systems, as well as high efficiency designs. Its simple operating principle enables the LTC1707IS8#PBF to be easily used in a variety of applications, while its adjustable output voltage and wide input voltage ranges make it suitable for a wide range of applications.