REG71055IDDCRQ1

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REG71055IDDCRQ1 is a low cost DC-DC synchronous buck regulator. It is a high performance step-down switching voltage regulator that can be used to deliver an adjustable output voltage from an input voltage source of 3.3V to 6V. It supports both current-mode and voltage-mode control for output voltage regulation, and features fast transient response for load transients. The output voltage can be adjusted over a wide range (2.5V to 5.5V). The device operates with a minimum input voltage of 2.25V and supports operation up to 1.8MHz with full load efficiency up to 97%. It has an adjustable current limit, low shutdown current, and an enable pin.

Application Field

REG71055IDDCRQ1 is an ideal choice for a wide range of consumer, industrial, and networking applications. It has a wide range of operating temperature (from -40°C to +125°C), high efficiency, low noise, and fast response time. It is well-suited for a variety of applications including smartphones, tablets, point-of-sale terminals, industrial and networking systems, and embedded designs. It provides excellent power supply stability and performance with high switching frequency, low temperature rise, low output voltage ripple, and high transient response.

Working Principle

The REG71055IDDCRQ1 uses synchronous buck topology, with an external P-channel MOSFET and N-channel MOSFET, to deliver an adjustable output voltage from an input voltage source. During normal operation, the external P-channel MOSFET and N-channel MOSFET, switch alternately and deliver power to the load. The IC detects the output voltage level and adjusts the duty cycle of the switching MOSFETs to optimize the output voltage. The REG71055IDDCRQ1 also has a low voltage dropout mode, in which both MOSFETs switch simultaneously to reduce the power consumption.

The current mode control of the REG71055IDDCRQ1 ensures fast transient response. This ensures that the output voltage remains stable even when the load current changes. The device also includes current limit protection to prevent over-stressing of the internal components. The REG71055IDDCRQ1 allows for adjustable output voltage and an adjustment range of 2.5V to 5.5V. This adjustable range can also be used to provide different output voltages, depending on the application requirements.

In addition to the current limit protection, the device also features an enable pin and a low shutdown current capability. The enable pin allows for low power shutdown, reducing power consumption to a minimum during idle periods. The REG71055IDDCRQ1 also supports operation up to 2°C with high efficiency, low noise, and fast transient response.

Overall, REG71055IDDCRQ1 is a low cost and energy efficient DC-DC synchronous buck regulator. With its high performance and wide temperature range, it is suitable for a wide range of consumer, industrial, and networking applications.

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