Overview
The LM1117MPX-3.3 is a low-dropout linear voltage regulator produced by Texas Instruments. This device is part of the LM1117 series, known for its high performance and reliability in various power supply applications. The LM1117MPX-3.3 is specifically designed to provide a fixed output voltage of 3.3 volts with a maximum output current of 800 mA. It features a low dropout voltage of 1.2 volts at 800 mA, making it suitable for use in systems where high efficiency and minimal voltage loss are critical.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 3.3 | V |
| Output Current | 800 | mA |
| Dropout Voltage | 1.2 | V (at 800 mA) |
| Line Regulation | 0.2% | |
| Load Regulation | 0.4% | |
| Temperature Range | 0°C to 125°C (LM1117), -40°C to 125°C (LM1117I) | |
| Input Voltage | Up to 20 V | |
| Current Limit | 800 mA to 1200 mA | |
| Package | SOT-223, TO-220, TO-252 D-PAK |
Key Features
- Available in fixed output voltages (1.8 V, 2.5 V, 3.3 V, 5 V) and an adjustable version (1.25 V to 13.8 V)
- Space-saving SOT-223 and other package options
- Current limiting and thermal shutdown protection
- High accuracy output voltage with ±1% tolerance
- Minimum 10-µF tantalum capacitor required at the output for stability
- ESD protection
Applications
- AC drive power stage modules
- Merchant network and server power supplies
- Industrial AC/DC power supplies
- Ultrasound scanners
- Servo drive control modules
- Post-regulator for switching DC/DC converters
- Battery chargers and battery-powered instrumentation
Q & A
- What is the maximum output current of the LM1117MPX-3.3?
The maximum output current of the LM1117MPX-3.3 is 800 mA.
- What is the dropout voltage of the LM1117MPX-3.3 at 800 mA?
The dropout voltage is 1.2 volts at 800 mA.
- What are the available package options for the LM1117MPX-3.3?
The LM1117MPX-3.3 is available in SOT-223, TO-220, and TO-252 D-PAK packages.
- What is the temperature range for the LM1117MPX-3.3?
The temperature range is 0°C to 125°C for the LM1117 and -40°C to 125°C for the LM1117I.
- Does the LM1117MPX-3.3 have current limiting and thermal protection?
- What is the recommended output capacitor for the LM1117MPX-3.3?
A minimum of 10-µF tantalum capacitor is recommended at the output for stability.
- What is the line regulation of the LM1117MPX-3.3?
The line regulation is 0.2% maximum.
- What is the load regulation of the LM1117MPX-3.3?
The load regulation is 0.4% maximum.
- Can the LM1117MPX-3.3 be used in high-efficiency linear regulator applications?
- Is the LM1117MPX-3.3 ESD protected?
