AS1336A-BQFT

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AS1336A-BQFT is a rugged, low-profile, single-channel DC-DC switching regulator. It provides an economical yet reliable solution for a wide range of applications. This monolithic regulator has an adjustable output voltage range of 0.8 to 5.5V and a maximum output current of 300mA. It is designed to operate over a wide input voltage range of 2.4V to 5.5V with bypass operation for low quiescent current operation.

The AS1336A-BQFT is an easy-to-use, low-cost monolithic step-down switching regulator that integrates voltage reference, pass transistor, error amplifier, oscillator, soft start, and current limit circuitry into a single package. It provides excellent load and line regulation, low ripple, and fast transient response. The output is DC adjustable with a wide accuracy of +/- 0.5%. An internal ceramic capacitor is integrated to reduce noise and help improve load response.

The AS1336A-BQFT operates at a 500KHz fixed switching frequency and internally sets an adjustable deadtime for the internal switching MOSFETs. The device features short-circuit and over-temperature protection with adjustable hysteresis, which enables a fast recovery from faults. Its enhanced features also include no-load detection for improved efficiency and soft-start for reduced in-rush current.

This integrated DC-DC switching regulator can be used in a variety of applications such as current-limited LED drivers, low-voltage power supplies, and portable devices. It is designed to serve as a replacement or new addition to existing linear regulators and switching supplies. Its small package size and low profile make it ideal for space-constrained designs.

The working principle of the AS1336A-BQFT is based on pulse-width modulation. It uses a feedback loop that measures the output voltage and works to maintain a constant voltage by adjusting the duty cycle of the PWM output. When the desired output voltage is set, the error amplifier compares the output voltage to the reference voltage, and adjusts the duty cycle accordingly. The MOSFETs are then switched on and off in a ratio determined by the duty cycle, resulting in a regulated output voltage.

Overall, the AS1336A-BQFT is an excellent solution for low-voltage DC-DC conversion applications, providing reliable and robust operation in a small form factor. It is a cost-effective and power-efficient solution for a variety of applications ranging from energy-constrained medical and portable device designs to high-performance computing, automotive, and white goods applications, and is an ideal choice for applications requiring low standby power.

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