S-8338ACFB-T8T1G

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S-8338ACFB-T8T1G is a highly integrated DC-DC switching controller, categorized as a voltage regulator in Power Management in Integrated Circuits (PMIC). Specifically designed for continuous output current of up to 1.5A, the device is ideal for a wide range of applications.

S-8338ACFB-T8T1G maintains a constant output voltage with the help of Pulse Width Modulation (PWM). Thus, by changing the pulse width, the output current and voltage can be regulated and maintained. Its operating input voltage range is between 2.5V and 5.5V, and its output voltage is adjustable between 0.8V and 18V.

Architecture and Features

The S-8338ACFB-T8T1G has a CMOS-based, 2-phase, 2 loop architecture gaining its switching feasibility from the PWM-controlled switching circuit. The feed-back circuit contains a voltage sensing node which is compared with the target output voltage, thus, the error term is usually present during working. For example, if the actual output voltage is more than the reference voltage, the error is said to be positive, and vice versa. This error term is provided to the controller, and it generates a feed-back signal in response to the error which is then used to adjust the output voltage. This PWM-operated switching circuit includes a ramp wave generator and a PWM comparator so that when the ramp wave is above the PWM waveform, switching occurs, and when it is below the PWM waveform, the switching is cut off. This procedure keeps repeating, and the voltage and current regulation is maintained.

Working Principle

The S-8338ACFB-T8T1G works on the principle of pulse-width modulation, wherein the input voltage and current is changed according to the error term. The voltage and current can be regulated and maintained with the help of a PWM waveform. When the ramp wave is above the PWM waveform, the switching is activated, and when it is below the PWM waveform, the switching is cut off.

The feedback loop contains a voltage sensing node which is compared with the target output voltage, thus, the error term is usually present during working. When the actual output voltage is higher than the reference voltage, a positive error term is generated, and when it is lower, a negative error term is generated. This error term is then used to adjust the output voltage. The PWM waveform is generated by comparing these error terms to the ramp wave. The switching occurs if the ramp wave is above the error term and is cut off when the ramp wave is lower than the error term.

Application Field of S-8338ACFB-T8T1G

The S-8338ACFB-T8T1G is mainly used for voltage regulation and maintenance. It is a highly integrated DC-DC switching controller ideal for a wide range of applications. These applications range from portable electronic devices to various computing equipment. It is also suited for power supply units, power amplifiers, low-power audio designs, automotive applications, and other similar applications.

The S-8338ACFB-T8T1G has a wide operating range, which makes it suitable for a variety of uses. This includes low input voltage operation, high controller current capability, high output voltage accuracy, and wide output voltage accuracy regulation. The device can also handle high transient current levels, thus, making it ideal for applications requiring high power efficiency. Its low start-up power consumption and minimal transient voltage makes it perfect for portable and battery-powered applications.

The device also has the capability to operate in either Continuous Conduction Mode (CCM) or Discontinuous Conduction Mode (DCM) depending upon the application. It is capable of providing multiple output voltage levels, allowing a wide range of applications to be supported. The device also comes with a built-in short-circuit protection, making it suitable to be used in safety-critical applications.

Conclusion

S-8338ACFB-T8T1G is a highly integrated DC-DC switching controller, categorized as a voltage regulator in Power Management in Integrated Circuits (PMIC). It works on the principle of Pulse Width Modulation (PWM), wherein the input voltage and current is changed according to the error term. It has a wide operating range and is ideal for a variety of applications ranging from portable electronic devices to various computing equipment. It has low start-up power consumption and minimal transient voltage making it perfect for portable and battery-powered applications. Thus, S-8338ACFB-T8T1G is a suitable solution for power supply units, power amplifiers, low-power audio designs, automotive applications, and other similar applications.

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