Home > Industry Information > Introduction And Application Guide Of LM1117MPX-3.3/NOPB Chip
The LM1117MPX-3.3/NOPB is a linear regulator with a fixed output voltage of 3.3V produced by Texas Instruments and is available in the SOT-223-4 package.
It features low voltage drop, high output current, high ripple suppression ratio and multiple protection functions, and can provide stable and reliable power supply for various electronic devices.
Input voltage range: 1.8V to 20V.
Output voltage: Fixed 3.3V.
Maximum output current: 800mA.
Dropout Voltage: 1.2V under a load of 800mA.
Static current: 5mA.
Power Supply Rejection Ratio (PSRR) : 75dB (120Hz)
Operating temperature range: -40°C to +125°C
Package type: SOT-223-4.
Low voltage drop design: At a load current of 800mA, the voltage drop is only 1.2V, which can improve the power conversion efficiency and reduce energy loss. It is particularly suitable for low-voltage input scenarios.
High output current: It can provide a continuous output current of up to 800mA, meeting the power supply requirements of various devices.
High ripple suppression ratio: PSRR up to 75dB (120Hz) effectively reduces power supply noise and ensures pure output voltage, making it suitable for applications with high requirements for power supply quality.
Wide input voltage range: The input voltage range is 1.8V to 20V, adapting to various power supply environments and enhancing application flexibility.
Built-in protection functions: Equipped with overcurrent protection, short-circuit protection and overheat protection, it enhances the reliability and safety of the system.
Low-power design: The quiescent current is only 5mA, making it suitable for low-power devices and battery-powered scenarios, which helps to extend the device's battery life.
Fast transient response: It can quickly respond to load changes, ensure power stability, and is suitable for applications with sudden load changes.
Scenario: Provide low-noise and stable power supply for communication modules (such as Wi-Fi, Bluetooth, RF modules).
Function: Communication equipment has high requirements for power supply quality, and power supply noise may interfere with signal transmission.
The high ripple rejection ratio (75dB) of LM1117MPX-3.3/NOPB can effectively reduce power supply noise and ensure the signal purity of the communication module.
In addition, its fast transient response capability can cope with the sudden load changes of the communication module during data transmission, ensuring the stability of communication.
Scene: Provide a stable power supply for electronic modules in automobiles (such as in-vehicle infotainment systems, sensors, and controllers).
Function: Automotive electronic devices need to operate within a wide voltage range and in a high-noise environment. The wide input voltage range (1.8V-20V) and high ripple suppression ratio of
LM1117MPX-3.3/NOPB enable it to adapt to the voltage fluctuations of automotive batteries. Meanwhile, its high output current capability can meet the power supply requirements of on-board electronic modules.
Scene: Provide a stable 3.3V power supply for microcontrollers, sensors, communication modules, etc. in industrial control systems.
Function: In industrial environments, equipment needs to maintain stable operation under complex voltage fluctuations and load changes. The low dropout design and high ripple suppression ratio of
LM1117MPX-3.3/NOPB can effectively cope with fluctuations in input voltage. Meanwhile, its high output current capability and fast transient response ensure the stability of the power supply and reduce equipment failures caused by power supply issues
The LM1117MPX-3.3/NOPB, with its outstanding low-dropout design, high output current capability, high ripple suppression ratio, low power consumption and fast transient response,
has become an ideal power management chip for many application fields. It can provide stable, efficient and reliable power supply solutions in industrial control, communication equipment, portable devices, medical equipment,
the Internet of Things, automotive electronics or consumer electronics.
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