STMicroelectronics

LD1117AS33TR

The LD1117AS33TR is a low-dropout (LDO) linear voltage regulator manufactured by STMicroelectronics. It is designed to provide a stable output voltage from an input voltage source, even when the input voltage is close to the desired output voltage. This makes it ideal for use in applications where a low-noise, low-dropout voltage regulator is required.

Description:

The LD1117AS33TR is a fixed-output, low-dropout linear voltage regulator with an output voltage of 3.3V. It has a very low dropout voltage of 300mV at a load current of 100mA, making it suitable for use in battery-powered applications where minimizing power consumption is critical. The regulator also features a low quiescent current of 70µA, which further reduces power consumption.

Features:

1. Fixed output voltage of 3.3V
2. Low dropout voltage of 300mV at 100mA load current
3. Low quiescent current of 70µA
4. Output current capability up to 1A
5. Internal short-circuit protection
6. Thermal shutdown protection
7. Enable function for power management
8. Small package size (SOT-223)

Applications:

The LD1117AS33TR is suitable for a wide range of applications where a stable, low-noise voltage supply is required. Some common applications include:

1. Portable electronic devices, such as smartphones, tablets, and wearables
2. Battery-powered devices, such as wireless sensors and IoT devices
3. Telecommunication equipment, where low-noise voltage regulation is critical
4. Industrial control systems, where reliability and stability are essential
5. Automotive electronics, such as infotainment systems and sensor interfaces

In summary, the LD1117AS33TR is a low-dropout, fixed-output linear voltage regulator that offers a stable and low-noise output voltage. Its low quiescent current and small package size make it an ideal choice for battery-powered and space-constrained applications.