The BL1117 is a low dropout (LDO) linear regulator manufactured by SHANGHAI BELLING CO., LTD. It is designed to provide a stable and regulated voltage output from a higher input voltage. This regulator is commonly used in a variety of electronic devices to ensure consistent power delivery to sensitive components.

Applications

• Power management in battery-powered devices: Ideal for mobile phones, tablets, and other portable electronics.
• Post-regulation for switching power supplies: Provides clean and stable voltage after the initial switching regulation.
• Microcontroller power supply: Ensures stable voltage for microcontrollers and other digital logic circuits.
• Linear regulation in industrial control systems: Offers reliable voltage regulation in harsh industrial environments.
• Powering sensitive analog circuits: Provides a low-noise power supply for analog circuits like sensors and amplifiers.

Features

• Low dropout voltage: Operates effectively even with a small difference between input and output voltage.
• High accuracy: Provides a precise and stable output voltage.
• Overcurrent protection: Protects the regulator and the load from excessive current draw.
• Thermal shutdown protection: Prevents overheating and damage to the regulator.
• Fixed and adjustable output voltage options: Offers flexibility in voltage regulation.

Benefits

• Extended battery life: Reduces power consumption due to its high efficiency.
• Improved system reliability: Provides stable and clean power, preventing malfunctions.
• Simplified design: Reduces the number of external components needed.
• Enhanced protection: Protects against damage from overcurrent and overheating.
• Versatile applications: Suitable for a wide range of electronic devices and systems.

Additional Details

The BL1117 is available in various fixed output voltages, such as 3.3V and 5V, as well as an adjustable version where the output voltage can be set using external resistors. It comes in different package types, including SOT-223 and TO-252, to accommodate various mounting requirements. The regulator's low dropout voltage ensures that it can maintain a stable output even when the input voltage is close to the desired output voltage. The built-in overcurrent and thermal shutdown protections safeguard the regulator and the connected circuitry from damage due to excessive current or overheating. This LDO regulator is a reliable choice for applications requiring efficient and stable voltage regulation.