VRE101CA

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The VRE101CA is one of a wide range of voltage references designed and manufactured by Richtek Technology Corporation. It belongs to the PMIC (Power Management IC) family and is intended to provide an extremely stable and accurate reference voltage. It is ideal for use in power systems and can be used to generate various reference voltages.

The main features of the VRE101CA include a wide input voltage range (1.7V to 7.0V), low quiescent current (<100μA at 3.3V input), integrated circuitry designed to keep the output holdup ripple to a minimum, and 3 different output voltage ranges (1.8V/2.5V/3.3V). Its small SOT23-6 package is suitable for use even in compact systems and its low dropout and low power design provide power savings for battery powered devices.

The VRE101CA operates in what is known as a "tailing" regulation mode. In this mode, the output voltage is automatically adjusted based on the load current so that the output remains at a specified level. This is accomplished by monitoring the input voltage and current, and adjusting the duty cycle of the output accordingly. When the system is lightly loaded, the duty cycle is increased to maintain the target voltage. For loads of greater than 10mA, the duty cycle is decreased so as to maintain the output voltage.

The VRE101CA incorporates a Comparator-Decompensator (CD) circuit which is designed to reduce output voltage deviation. This circuit monitors the output voltage after each cycle and if the voltage deviates by more than ±2mV, the duty cycle is adjusted accordingly to keep the output voltage ppm level. The VRE101CA is also designed to provide very low ripple noise. When the circuit is running in standby mode, the output ripple is reduced to a minimum of 0.4mV compared to a conventional design, with an output voltage ripple of 3.2mV.

The VRE101CA provides an industry leading performance with respect to accuracy and temperature stability. The maximum input voltage variation is only 2mV and the maximum output voltage variation from 25°C to 85°C is just ±0.5% over typical conditions. Furthermore, it is able to maintain an accuracy of ±2mV across the temperature range of -40°C to 125°C. This high level of performance makes the VRE101CA suitable for use in a range of applications including power systems and precision analog circuits.

As part of Richtek\'s Voltage Reference product lines, the VRE101CA can be used as a reference voltage in a wide range of applications. It is suitable for use in microcontrollers, voltage regulators, switching power supplies, precision analog circuits, and power management systems. Additionally, this Voltage Reference IC can be used to generate reference voltages for D/A converters, A/D converters and other related ICs.

In conclusion, the VRE101CA is an ultra-low power voltage reference IC that provides accurate output voltage and temperature stability. Its wide input voltage range, low quiescent current consumption, low voltage dropout and low ripple noise make it suitable for a wide range of applications. Richtek’s VRE101CA provides reliable performance and ensures that the reference voltage is always stable and accurate.

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