LTC3833EFE#PBF

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The LTC3833EFE#PBF is a family of highly integrated step-down switching regulators designed for efficient, low-draw applications. This product features a dual Mode synchronous Buck PWM controller and an adjustable low-noise integrated low-side MOSFET driver, both optimized for low power draw and physical space. With its ability to support both conventional and pseudo-resistive load regulation, together with a simple and intuitive user programmable interface, the LTC3833EFE#PBF provides the highest operating efficiency, low output ripple and overall improved system performance.

The LTC3833EFE#PBF offers a wide range of output voltage settings and a voltage-mode current-mode control system allowing for a wide range of output voltages and load types. The device includes a power sampler to detect overcurrents and programmable thermal limits. Its wide operating frequency range can be set from 200 kHz to 2 MHz, with the user being able to adjust the switching frequency via a resistor setting or through I2C programming. The included soft start and stop functions are also programmable. The device also provides a programmable high voltage lockout protection and a delay shutdown output that can be programmed based on external conditions.

In terms of its application field, the LTC3833EFE#PBF is a perfect choice for power supplies for systems such as factory automation, medical equipment, computers and communication systems. It is particularly suitable for applications where high efficiency and small size are necessary. This device is also suitable for space-constrained boards as it integrates multiple discrete components into a small QFN package.

The working principle of the LTC3833EFE#PBF involves a voltage-mode synchronous buck pulse-width modulation (PWM) controller which drives a low-side MOSFET and an adjustable low-noise MOSFET driver. This device is capable of achieving an output voltage lower than the input voltage, making it useful for applications that require a step-down voltage transformation. The output voltage is set via an external resistor divider and can be set as low as 0.4V, allowing for a wide load range. The user can also adjust the switching frequency via a resistor or program it via I2C.

In addition, the device also has a power sampler that detects overcurrents and thermal limits protection. A high-voltage lockout and an adjustable soft start/stop are also featured in the device. When the device is active, it will switch up to 75 mA of current to the load and can provide an output voltage accuracy down to ±0.6%.

In summary, the LTC3833EFE#PBF is a highly integrated and efficient step-down regulator designed for efficient and low-draw applications. It supports a wide range of output voltage settings and features a voltage-mode current-mode control system, power sampling detection, programmable thermal limits, adjustable switching frequency, as well as a high voltage lockout protection and a delay shutdown output. The device is suitable for systems such as factory automation, medical equipment, computers and communication systems where there is a need for high efficiency, low size and low power draw.

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