S-8337AAIC-T8T1G

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The S-8337AAIC-T8T1G is a part of DC DC Switching Controllers, within PMIC - Voltage Regulators, used to provide excellent load transient and steady state performances. Specifically designed for automotive applications, it provides optimal flexibility and precision over the full operating temperature range.

The S-8337AAIC-T8T1G is a flexible and highly-integrated DC-DC controller that combines the features of a step-down bulk regulator and a synchronous rectifier, with an integrated true RDSON driver stage, enable/disable control and low on-resistance devices. It is designed for use in a wide range of applications, including automotive requirements, LED lighting, automotive audio amplifiers, or mail servers and application processors.

Application

The S-8337AAIC-T8T1G is suitable for applications from 2.5V to 40V, such as computing, networking, automotive, and industrial applications. It can be used in a wide variety of applications including DC/DC buck converter and synchronous buck regulators. Specifically, the device is suitable for automotive engine or body control modules, audio amplifiers, battery management systems, and power-over-Ethernet (PoE). It is also suitable for automotive lighting applications such as headlamps and signaling.

Features

The S-8337AAIC-T8T1G features include a 500mA low on-resistance driver stage, enabling fast load transient response, low EMI and full output current range. It has an integrated fast output voltage shut-off circuit, and features an undervoltage lockout (UVLO) with hysteresis. The device also features programmable current-mode gain, soft start, frequencyfold-back, and Advanced Multi-Phase operation to improve the output current accuracy and transient response.

Working Principle

The S-8337AAIC-T8T1G uses a hysteretic current-mode work principle. This allows for fast and reliable detection of the input voltage for a given load. As the voltage is detected, an internal voltage regulator is used to control the duty cycle of the driver stage. The duty cycle then controls the current drawn from the input power source. The output voltage is then regulated to the desired value by a feedback control loop.

The S-8337AAIC-T8T1G also features a comprehensive set of protection features, including input undervoltage lockout, output over-current protection, and thermal shutdown. This ensures that the device is capable of powering a variety of loads without causing damage to the device or the load.

Conclusion

The S-8337AAIC-T8T1G is a highly-integrated PMIC - Voltage Regulators - DC DC Switching Controllers ideal for automotive applications. It combines the features of a step-down bulk regulator and a synchronous rectifier, with an integrated true RDSON driver stage, enable/disable control and low on-resistance devices. Its advanced features allow for efficient and reliable power conversion over a wide range of loads.

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