S-8357B26MC-NILT2U

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S-8357B26MC-NILT2U is a DC/DC switching controller designed for Power Management Integrated Circuit (PMIC). It is specifically designed for Battery Management System (BMS) in the field of consumer electronics, industrial automation, automotive, telecommunications and Power over Ethernet (PoE). This device has a wide range of operating supply voltage up to 26V. It also has a low quiescent current of only 1 uA.

Application Field

The S-8357B26MC-NILT2U is ideal for use as a Battery Management System (BMS) in consumer electronics, industrial automation, multimedia, telecommunications and PoE. The output current rating of this device is up to 6A, allowing it to power multiple bays at once. Furthermore, the high switching frequency with a range of up to 500 kHz allows it to operate at low ripple and high efficiency. Besides, the on-chip oscillator assist to facilitate the seamless start-up process and optimize the performance of the system.

Working Principle

S-8357B26MC-NILT2U uses a closed loop control to regulate the output voltage. A certain internal comparator compares the output voltage to the reference voltage and adjusts the operating duty cycle of the switching FET accordingly to maintain accuracy. The on-chip oscillator helps to modulate the operating duty cycle and helps to control the output voltage. The duty cycle can be configured to be charge or discharge accordingly according to the type of application.

In addition, the device also features under-voltage and over-voltage protection. The built-in under-voltage protection prevents the device from operating when the input voltage is lower than the set protection voltage. The over-voltage protection will disengage the switching FET when the output voltage is higher than the set threshold. These features protect the battery from being over-discharged or over-charged which may result in lifetime degradation.

In summary, the S-8357B26MC-NILT2U is a multi-purpose DC/DC switching controller ideal for use as a Battery Management System (BMS) in the field of consumer electronics, industrial automation, automotive, telecommunications and Power over Ethernet (PoE). It has a wide operating supply voltage range, high switching frequency and built-in over and under voltage protection which makes it an ideal choice as a BMS controller in a variety of applications.

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