REF02BUE4

Noise - 0.1Hz to 10Hz:	4µVp-p
Base Part Number:	REF02
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Current - Supply:	1.4mA
Voltage - Input:	8 V ~ 40 V
Noise - 10Hz to 10kHz:	--
Series:	--
Temperature Coefficient:	10ppm/°C
Tolerance:	±0.2%
Current - Output:	21mA
Voltage - Output (Min/Fixed):	5V
Output Type:	Fixed
Reference Type:	Series
Part Status:	Active
Packaging:	Tube

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REF02BUE4 Application Field and Working PrinciplePMIC (Power Management Integrated Circuit) is a type of electronic circuit that is designed to provide power management and power control. A Voltage Reference (REF02BUE4) is a specialized type of PMIC which is used in applications where precision voltage control is required. This article will discuss the application field and working principle for this device.The REF02BUE4 is a versatile Voltage Reference which can be used in a variety of applications. These include current shunt and system power monitor circuits, analog-to-digital and digital-to-analog (A/D & D/A) converters, microprocessors, DC-DC converters, switching power supplies, and many more. The device is suitable for use in extremely harsh and noisy environments, making it ideal for reliability-critical applications.The REF02BUE4 operates in a wide temperature range of -40 to 125 ˚C and is available in two versions: one with an output voltage range of 0.3-3.7V and the other with an output voltage range of 10-50V. It features low input noise, high accuracy over the full temperature range, and tight linearity. This allows the device to remain stable in analog and digital applications over a wide temperature range.The REF02BUE4 utilizes a temperature-compensated bandgap Voltage Reference design to ensure its accuracy and reliability. The bandgap voltage reference generates a stable voltage independent of ambient temperature, in this case, 1.25V. This reference is then combined with an external resistor divider to generate a specified output voltage. It also utilizes an extreme-low power CMOS architecture to consume very low power when in standby mode.The REF02BUE4 also features advanced protection circuitry, including reverse polarity, overvoltage, and overcurrent protections. This feature makes the device immune to external influence, such as noise and EMI, allowing for reliable results in applications. Additionally, the device is offered in a small and lightweight SOT-23 package, making it easy to integrate into embedded systems.In conclusion, the REF02BUE4 is a versatile Voltage Reference which is capable of providing precision voltage control in applications where reliability is critical. It features a temperature-compensated bandgap Voltage Reference design and advanced protection circuitry, making it suitable for use in harsh and noisy environments. Additionally, its small SOT-23 package size and low power consumption make it suitable for use in a variety of embedded systems.

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