ADR391BUJZ-REEL7

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PMIC, or power management integrated circuits, are specialized forms of integrated circuits that helps to manage and regulate the flow of power to a system, device, or component. PMICs are used in virtually all modern computing and electrical devices, from laptops and smartphones to automotive steering systems and industrial control systems. One of the key functions of PMICs is to provide voltage reference, which ensures that the voltage supplied to the system remains stable regardless of changes in load or other inputs. The ADR391BUJZ-REEL7 is a precision voltage reference made by Renesas Electronics, and is part of their Automotive-qualified R2A-SIP family.

The ADR391BUJZ-REEL7 is available as a three-pin single-in-line packaging (SIP) in a SOT23-6 housing. The device provides an extremely accurate 1.2V reference voltage, ±1mV initial accuracy and a temperature coefficient of ±5ppm/°C over the operating temperature range of -40°C to 85°C. The device also offers good long-term drift, at ±2ppm/year total over the specified temperature range. The ADR391BUJZ-REEL7 consumes only 4.5μA of quiescent current, which makes it an efficient and cost-effective choice for applications requiring an accurate and stable reference voltage.

The ADR391BUJZ-REEL7 is designed to be used as a voltage reference in automotive electronics, where its high accuracy and temperature stability is critical for maintaining the proper operation of the system. The device can be used to set up a voltage regulated power supply, providing a well-controlled source of voltage for powering various components. Additionally, the device can also be used in accuracy-sensitive analog circuits, providing a stable reference voltage for the circuit to reference against. Replacement of a conventional voltage reference with the ADR391BUJZ-REEL7 can help reduce the overall cost of an automotive system, while also ensuring that the system performance meets the design specifications.

The ADR391BUJZ-REEL7 works by using a pair of voltage reference transistors to generate a 1.2V output voltage that is extremely accurate and stable over temperature. The device also includes protection circuitry to help prevent any potential damage to the device due to overvoltage or current overload conditions. The device is covered by an input overload protection that limits the maximum input current to 1mA. Furthermore, the device’s output is short-circuit protected, meaning that the output voltage won’t be affected in the event of a short circuit.

The ADR391BUJZ-REEL7 is an ideal choice for automotive applications requiring a very accurate and stable reference voltage, such as voltage-regulated power supplies, accuracy-sensitive analog circuits, or any other system where an accurate and long-term stable reference voltage is required. The device offers very high accuracy, low quiescent current, and excellent protection against overloads and shorts, making it a cost-effective and reliable solution for precision voltage reference needs.

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