S-817B15AY-Z2-U

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S-817B15AY-Z2-U is a Multi-Channel Voltage Regulator Linear (PMIC - Voltage Regulators - Linear) device, designed for use in AC/DC and DC/DC applications and regulated for converting unregulated DC voltage into a regulated output in the form of 5V, 10V, 15V or adjustable regulated voltage from 0.8V to 20V.

The device features two channels that work independently of each other and provide low dropout, high current and high ripple rejection. The S-817B15AY-Z2-U has a wide input voltage range of -24V to +48V and a maximum output current of up to 2 A with a ripple rejection of 80 dB at 10 Hz and a tolerance of 0.2%. The device also includes an adjustable power on time delay and a minimum output current allowing for precise, controlled start-up behaviour.

The S-817B15AY-Z2-U utilizes voltage regulation to implement the basic control. The reference voltage is either provided externally or derived internally from an internal band gap reference. The reference voltage is compared to a voltage sense signal, which is a signal that is proportional to the output voltage. The difference between the signal and the reference voltage is amplified by an error amplifier and sent to the gate of the pass transistor, which is typically a MOSFET switch. When the output voltage differs from the desired voltage by an amount greater than the reference voltage, the error amplifier will cause more current to flow through the gate of the switch to make the output voltage approach the desired voltage. The current supplied through the gate of the switch is proportional to the magnitude of the error multiplied by the gain of the error amplifier.

The S-817B15AY-Z2-U includes a temperature compensation circuit that alters the reference voltage with changes in ambient temperature. The temperature compensation circuit is a variable resistor connected in series with the reference voltage to increase or decrease the reference voltage with changes in temperature. The device also includes a voltage protection circuit, which prevents the output voltage from exceeding a predetermined threshold to protect the load from a fault condition.

The S-817B15AY-Z2-U is used in applications such as electric vehicles and home appliances. It is an ideal choice for many power management applications for its high efficiency, low dropout, low output offset and temperature stability.

The S-817B15AY-Z2-U is a versatile integrated circuit capable of handling both AC-DC and DC-DC applications, making it a valuable component in many places. Its temperature compensation feature, high-voltage protection, low dropout and high current output make it an ideal choice for power management solutions. Its adjustable output voltage makes it suitable for use in applications such as electric vehicles, home appliances and other consumer electronics.

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