onsemi

KA331

The KA331 is a precision low-dropout (LDO) linear voltage regulator manufactured by ON Semiconductor. It is designed to provide a stable and reliable voltage output with low quiescent current, making it suitable for a wide range of applications.

Description:

The KA331 is a low-dropout linear regulator that can operate from an input voltage range of 2.5V to 5.5V and provide an adjustable output voltage from 1.23V to 3.3V. It has a maximum output current of 300mA and a typical dropout voltage of 300mV at a 100mA load. The device features a low quiescent current of 70µA, which makes it ideal for battery-powered applications.

Features:

1. Low dropout voltage: 300mV at 100mA output current
2. Wide input voltage range: 2.5V to 5.5V
3. Adjustable output voltage: 1.23V to 3.3V
4. Low quiescent current: 70µA
5. Internal current limit protection
6. Internal thermal shutdown protection
7. Small package size: SOT-23

Applications:

1. Portable electronic devices: smartphones, tablets, and wearables
2. Battery-powered devices: wireless headsets, fitness trackers, and smartwatches
3. IoT devices: sensors, smart home devices, and security systems
4. Medical devices: portable monitoring equipment and wearable medical devices
5. Industrial equipment: low-power sensors and control systems

The KA331's combination of low dropout voltage, wide input voltage range, and low quiescent current make it a versatile and efficient choice for a variety of applications where a stable and reliable voltage regulation is required.