VRE4125B

Noise - 0.1Hz to 10Hz:	2.2µVp-p
Base Part Number:	VRE4125
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TA)
Current - Supply:	320µA
Voltage - Input:	1.8 V ~ 5.5 V
Noise - 10Hz to 10kHz:	--
Series:	--
Temperature Coefficient:	1ppm/°C
Tolerance:	±0.05%
Current - Output:	8mA
Voltage - Output (Min/Fixed):	2.5V
Output Type:	Fixed
Reference Type:	Series
Part Status:	Obsolete
Packaging:	Tube

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VRE4125B Application Field and Working Principle

VRE4125B is a type of PMIC - Voltage Reference, manufactured by Vreg. It is used to maintain constant output voltage levels, and regulates the voltage in the microelectronic circuits. This type of voltage reference helps to reduce stress on the transistors and resistors, improve system reliability, and reduce power consumption.The VRE4125B combines precision voltage-regulating circuitry, low quiescent current, and wide input/output range to provide excellent regulation performance. Its main application fields include battery-powered equipment, hand-held electronics, mobile phones, and other portable electronic devices.In order to maintain the output voltage level, the VRE4125B utilizes a voltage-switching technique. In order to save power, the output voltage is controlled by a reduced series of internal reference points and switching system. The voltage level is adjusted from low to high by decreasing or increasing the load, with each step providing a more precise output voltage.The VRE4125B works by comparing the output voltage to a reference voltage provided by an external reference voltage. If the output voltage is lower than the reference, then the regulation circuitry increases the voltage and adjusts the resistors accordingly. If the output voltage is higher than the reference, then the regulation circuitry reduces the voltage and adjusts the resistors as well. The VRE4125B also includes a feedback control system, allowing the output voltage to be monitored, adjusted, and maintained by a microcontroller without any human intervention. This helps minimize the power consumption and improve the power efficiency of the device.The VRE4125B has several advantages, such as low quiescent current, low output voltage ripple, high load capability, and a wide input/output voltage range. All these features make it a suitable choice for powering a wide range of devices.The VRE4125B also has several safety features, such as output overvoltage protection, runaway output voltage protection, and reverse-polarity protection. These built-in protective measures help ensure the stability and reliability of the device, and prevent any damage to the connected electronic components.Overall, the VRE4125B provides an efficient and reliable solution for maintaining accurate output voltage levels. Its features make it an ideal choice for powering a wide range of devices, and its built-in safety features make it a safe and reliable source of power.

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