AP7311-10WG-7

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PMIC - Voltage Regulators - Linear

AP7311-10WG-7 is a linear voltage regulator from Anpec Electronics Corporation. It is designed for applications such as DC-DC converters, power supplies, and digital video signals. The device is a 3A, 10A, 5V voltage regulator, which features built-in current limiting, over temperature protection, under voltage lockout, and over voltage protection.

The AP7311-10WG-7 is a monolithic integrated circuit that contains voltage regulator, output current limiter, thermal shutdown circuit, and protective functions in one chip. It can supply constant output current within a wide input voltage range. The device is suitable for applications where low drop-out voltage and low output voltage ripple are needed. It has an adjustable output voltage (3.3V to 5V) and is capable of supplying output current up to 3A (typical). The device also includes current limiting, overload protection with auto-recovery, and over-temperature protection with auto-recovery.

The working principle of the AP7311-10WG-7 is based on a control-mode power converter. It converts an input voltage of 3.3V to 5V to a slightly lower output voltage. The device uses an all-NPN-and-PNP, two-step reference voltage-controlled architecture to regulate the output voltage. An oscillator is used to generate a fixed frequency square wave, which is then filtered to generate the required reference voltage.

An output voltage ramp is generated by controlling the oscillator frequency. The reference voltage is compared to the output voltage using a comparator and the difference is used as an error signal. This error signal is then used to adjust the PWM duty cycle, resulting in a controlled output voltage. The PWM circuit is used to control the output voltage, as well as the output current. The device is also equipped with a thermal shutdown circuit and over-voltage protection circuit that protect the device from overheating, over-voltage, or over-current conditions.

The AP7311-10WG-7 is a highly efficient linear voltage regulator with low drop out and low output ripple. It is suitable for applications that require a reliable, low cost, and wide input voltage range. It is also capable of providing a constant output current, making it ideal for many types of power supplies and DC-DC converters.

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