S-8337ACEC-P8T1G

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The S-8337ACEC-P8T1G is an advanced DC/DC switching power supply controller and voltage regulator that is designed to meet the needs of high-performance integrated applications. It combines a high-efficiency switching regulator with an ultra-low power current sense amplifier. The S-8337ACEC-P8T1G is ideal for applications where high efficiency, low power consumption and high performance are critical.

Features

• High Efficiency Switching Regulator with Ultra-Low Power Current Sense Amplifier
• Wide Input Voltage Range from 4.5 V to 32 V
• 0.6 V to 5 V Output Voltage Range
• Low Standby Current: 0.5 μA (Typical)
• High Peak Current Capability
• Input UVLO, Temperature Protection and Output Over-Voltage Protection
• Low Power Mode with Disable Output

Application Field

The S-8337ACEC-P8T1G is a versatile and efficient power supply controller that is well suited for a wide range of applications. It is ideally suited for applications such as LED Driver, White LED Driver, LCD/TFT Display, Consumer Electronics, DC/DC Conversion and Energy Harvesting. The wide input voltage range, current sensing amplifier, temperature protection, and wide output range makes it an ideal choice for these types of applications.

Working Principle

The S-8337ACEC-P8T1G is a DC-DC Buck (step-down) converter that provides a regulated output voltage from a higher unregulated input voltage. It operates by switching the input voltage on and off very quickly in order to create a pulsed output voltage. The pulse width is regulated in order to maintain the output voltage within the desired range. The primary components of the S-8337ACEC-P8T1G are an internal power switch, an inductor, a sense amplifier, and an output capacitor.

The internal power switch is a FET (Field Effect Transistor) that operates in synchronous or non-synchronous mode, depending on the application. In synchronous mode, the FET is switched on and off simultaneously with the battery voltage, resulting in a duty cycle that is determined by the internal feedback loop. In non-synchronous mode, the FET is switched on and off independent of the battery, allowing the duty cycle to be set directly by the user.

The inductor’s value is chosen in order to optimize the efficiency, taking into account the switching frequency, input voltage, output voltage, and load current. The current sense amplifier is used to detect the peaks of the inductor current, in order to implement a current-mode control loop for controlling the output voltage. Finally, the output capacitor is used to filter the pulsed output voltage and create a steady, regulated DC voltage.

Conclusion

The S-8337ACEC-P8T1G is an advanced DC/DC switching regulator and voltage regulator designed for high performance integrated applications. It combines a high efficiency switching regulator with an ultra-low power current sense amplifier, making it ideal for applications where power consumption and high performance are essential. It has a wide input voltage range, a wide output voltage range, low standby current, and temperature protection and output over-voltage protection. It is well suited for applications such as LED driver, white LED driver, LCD/TFT display, consumer electronics, DC/DC conversion, and energy harvesting.

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