XC6221B182

series introduction

# Introduction to the XC6221B182 Product Series

## 1. Overview
The XC6221B182 product series is a remarkable line of voltage regulators that offers high - performance and reliable power management solutions. These regulators are designed to meet the diverse power requirements of a wide range of electronic devices, from portable consumer electronics to industrial control systems. With their advanced features and excellent electrical characteristics, they have become a popular choice among engineers and designers.

## 2. Key Features

### 2.1 Low Dropout Voltage
One of the standout features of the XC6221B182 series is its low dropout voltage. Dropout voltage refers to the minimum voltage difference between the input and output voltages required for the regulator to maintain a stable output. A low dropout voltage is crucial, especially in battery - powered applications. For example, in a portable device running on a single - cell lithium - ion battery, as the battery voltage gradually decreases during use, the low dropout voltage of the XC6221B182 ensures that the regulator can still provide a stable output voltage until the battery is almost fully discharged. This extends the battery life and enhances the overall performance of the device.

### 2.2 High Output Voltage Accuracy
The XC6221B182 series offers high output voltage accuracy. It can maintain the output voltage within a very tight tolerance range, typically ±1%. This high accuracy is essential for applications that require precise power supply, such as analog circuits, microcontrollers, and sensors. In a sensor application, for instance, a stable and accurate power supply is necessary to ensure the correct operation and accurate measurement of the sensor. Any deviation in the power supply voltage could lead to measurement errors and affect the overall performance of the system.

### 2.3 Low Quiescent Current
Quiescent current is the current consumed by the regulator when there is no load or a very light load. The XC6221B182 series has a low quiescent current, which is beneficial for battery - powered devices. In standby or sleep modes, where the device consumes very little power, the low quiescent current of the regulator helps to minimize power consumption and further extend the battery life. This makes it an ideal choice for portable devices that need to operate for long periods on a single charge, such as smartwatches, wireless earbuds, and remote sensors.

### 2.4 Built - in Over - Current and Over - Temperature Protection
To ensure the safety and reliability of the connected devices, the XC6221B182 series is equipped with built - in over - current and over - temperature protection features. In case of an over - current situation, such as a short - circuit in the load, the regulator will automatically limit the output current to prevent damage to the regulator and the connected components. Similarly, if the temperature of the regulator exceeds a certain threshold, the over - temperature protection mechanism will kick in and shut down the regulator to avoid overheating and potential failure.

## 3. Electrical Specifications

### 3.1 Input Voltage Range
The XC6221B182 series typically has an input voltage range of 2.0V to 6.0V. This wide input voltage range allows it to be used with various power sources, such as single - cell or multi - cell batteries, as well as regulated power supplies. For example, it can be used with a 3.7V lithium - ion battery or a 5V USB power supply, providing flexibility in different application scenarios.

### 3.2 Output Voltage
The output voltage of the XC6221B182 series is fixed at 1.8V. This specific output voltage is commonly used in many modern electronic devices, such as microcontrollers, memory chips

Images for reference

USPN-4

USP-4

SOT25

Datasheets

• XC6221 Series
• PDF 2

Partlist