LTC7812IUH#PBF

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The LTC7812IUH#PBF is a high performance, monolithic switching regulator controller specifically designed to minimize component count, cost and complexity making them ideally suited for cost-sensitive applications. It can be used in power supplies, fly-back converters, DC-DC converters, and host of other high power applications. This controller is designed to efficiently control the energy flow in the system and can operate in several modes like buck, boost and fly-back converter with peak current mode control.

The LTC7812IUH#PBF can integrate up to 10xVin safe operating area (SOA). This makes it ideal for applications that require high efficiency and wide input voltage range such as automotive, industrial and telecommunication applications. It has a wide temperature range of -55C to 175C which makes it suitable for industrial applications.

The LTC7812IUH#PBF contains an internal regulator for delivering the voltage supply for the negative gate drivers and the other necessary analog components. It has built-in logic for soft start, SSDA, inrush current limit, over voltage protection and undervoltage lockout, latch mode and PLL synchronisation capability. It also provides 5V/12V/15V internal regulated output.

The primary frequency at which the LTC7812IUH#PBF operates is between 200kHz and 1MHz and the switching time is in the range of 50-150ns on a correctly designed gate drive. The efficiency of the LTC7812IUH#PBF is better than 90%, when the output voltage is in the range of 4.0V to 24V. The maximum current rating of the device is 6A.

The LTC7812IUH#PBF works by receiving the input voltage from a DC power source and subjecting it to a series of high frequency pulses. This pulse width modulated (PWM) signal is then used to control the switching transistor. The PWM signal drives the two halves of a high side and a low side N-channel MOSFET, which are connected in a buck regulator configuration. The midpoint between the two switches is connected to the output filter. This filter results in a DC voltage equal to the desired output voltage.

The LTC7812IUH#PBF has a current sense and a voltage sense feature that allows it to monitor the output voltage and current. This sensing device and the respective feedback circuitry is used to control the output voltage and current signals. The LTC7812IUH#PBF also has a fault detection circuit, which allows the controller to detect various faults such as an unsafe output voltage, overcurrent, overvoltage, and over temperature. This feature is used to ensure the safety and reliability of the system.

The LTC7812IUH#PBF has a wide variety of features and is cost effective as compared to other similar devices. The controller is extremely reliable and efficient and can be used for many high power applications. It is well suited for industrial, automotive, telecom and other cost-sensitive applications.

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