S-1009C23I-I4T1U Integrated Circuits (ICs)

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Power management integrated circuits (PMICs) are digital processing systems responsible for supervising and regulating several power supply units distributed in any electronic device for the purpose of guaranteeing a safe and efficient operation. PMICs are divided into voltage monitors, constant voltage and constant current regulators. Supervisors are the most complex PMICs, chiefly designed to protect power supplies from user mistakes, unexpected voltage fluctuations, and overcurrents.

The S-1009C23I-I4T1U is an advanced supervisor circuit manufactured by Sanken Electric Co. Ltd. It works as a voltage detector in which the high and low detection points are configurable. This supervisor monitors input voltage levels through a dedicated voltage pin that can be configured with a pull-up or pull-down resistor. Its 24-pin Quad Flat No-Lead (QFN) package facilitates its integration onto printed circuit boards (PCBs) that are short of space.

The S-1009C23I-I4T1U supervises input voltage in ±1.5% of accuracy and actively triggers an output status pin when input voltage drops below a specific low threshold. This supervisor works as an integrated system for monitoring power supplies. This digital circuit can detect as low as 0.8V input voltage and as high as 4.3V.

The S-1009C23I-I4T1U has a high current-driven output. This feature has the capability of directly driving a power MOSFET transistor to operate on-off switching of loads while supplying up to 10mA of current on the output. This supervisor also features soft start and power-on reset (POR) functions, thereby drastically minimizing start-up current.

The S-1009C23I-I4T1U can operate in wide temperature conditions. It works in -40°C to +85°C and -20°C to +105°C temperatures. This supervisor has a maximum power-on duration of 20ms and a minimum power-off delay of 50ms. It falls under Sanken’s S-series lineup of Supervisors and is suitable for portable and low-power applications, such as smartphones, portable media players, electronic cameras, point-of-sale, toys, and automotive systems.

The S-1009C23I-I4T1U supervisor has several advantages, such as low voltage detection, high voltage detection, wide and adjustable voltage range, high-current driven output, low power-on reset leak current, low start-up current, and overcurrent protection. It also has programmable delay times for power-on and power-off, ease of implementation, and compatibility with various PCB layouts.

In conclusion, the S-1009C23I-I4T1U is an advanced supervisor circuit suitable for a wide range of applications, owing to its outstanding features like high current-driven output, wide operating temperature range, and low power-on reset leak current. It monitors the input voltage levels, detects low and high voltage thresholds, and actively triggers an output status pin when input voltage drops below a specific low threshold, thereby providing a reliable and safe operation.

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