LTC3862EUH-2

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Introduction

The LTC3862EUH-2 is a high performance buck (step-down) DC-DC switching controller with an external reference, wide output voltage range, and adjustable current limit. It is a highly integrated device with a minimum of external components, making it ideal for space limited, high efficiency DC/DC power supply applications.

Application

The LTC3862EUH-2 is designed for a wide variety of applications such as powering microprocessors, digital signal processors, memory devices and other load applications from a 5V or 12V rail. It can be used for low noise power conversion, step-up/down conversions, hot-swap applications, or any other application requiring wide input voltage range and accurate current or voltage limit protection.

The LTC3862EUH-2 is a pulse-width-modulated (PWM) DC-DC switching controller with a differential amplifier and 2-stage error amplifier. It has an external reference input and adjustable current limit, which can be used to program the desired output current. The device has a built-in slew rate control feature, adjustable deadtime, and adjustable switching frequency, as well as a power-good indicator, undervoltage lockout, short circuit protection, and overtemperature protection.

The LTC3862EUH-2 also features a high current switching cell for driving external MOSFETs. It has a built-in PWM current-mode regulation loop. The PWM regulation loop controls the inductor current and compensates for output load transients.

The LTC3862EUH-2 can be used to convert any input voltage to any output voltage. It can be used in buck, boost, or inverting buck-boost applications with or without a transformer. It can also be used as a standby power supply.

Advantages

The LTC3860EUH-2 offers several advantages over traditional DC-DC switching controllers. It is a highly integrated device, requiring only a few external components. This eliminates the need for complicated design and assembly, resulting in a simpler and cheaper power solution. Additionally, the LTC3860EUH-2 can be programmed to adjust the output current limits and frequencies, making it very suitable for applications that require high accuracy and low noise.

The LTC3860EUH-2 has a wide operating range and is compatible with a wide variety of input voltages. It also features an adjustable PWM current-mode regulation loop, which helps minimize output ripple and provides fast transient response. Finally, the LTC3860EUH-2 features both over-voltage and over-current protection, which adds extra safety in case of fault conditions.

Conclusion

The LTC3860EUH-2 is a high performance buck (step-down) DC-DC switching controller, providing highly efficient power conversion in a wide variety of applications. It requires only a few external components, making it ideal for highly integrated, space limited designs. The LTC3860EUH-2 also offers adjustable frequency and current limit, as well as built-in protection features such as over-voltage and over-current. These features make it suitable for a wide range of power supply designs.

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