Overview
The LT1117IST-3.3#TRPBF is a positive low dropout linear voltage regulator produced by Analog Devices Inc. This device is part of the LT1117 family, designed to provide up to 800mA of output current with a fixed output voltage of 3.3V. It is available in a 3-lead SOT-223 package, making it suitable for applications where space is limited. The regulator is known for its high accuracy, low dropout voltage, and robust thermal protection, making it a reliable choice for various power management needs.
Key Specifications
| Parameter | Value |
|---|---|
| Output Voltage | 3.3V |
| Output Current | Up to 800mA |
| Dropout Voltage | Maximum of 1.2V at 800mA |
| Reference Voltage Tolerance | ±1% |
| Operating Temperature Range | -40°C to 125°C |
| Package Type | 3-Lead SOT-223 |
| Thermal Protection | Shuts down at junction temperature exceeding 165°C |
| Minimum Load Current | 10mA |
| Output Capacitor Requirement | Minimum of 10μF tantalum or 50μF aluminum electrolytic |
Key Features
- Low dropout voltage: Ensures efficient power regulation even at low input voltages.
- High accuracy: Reference voltage tolerance of ±1%.
- Thermal protection: Automatically shuts down if the junction temperature exceeds 165°C.
- Short circuit protection: Protected against short circuit conditions.
- Compact packaging: 3-lead SOT-223 package for space-constrained applications.
- Pin compatibility: Compatible with older 3-terminal adjustable regulators.
Applications
The LT1117IST-3.3#TRPBF is suitable for a variety of applications, including:
- Power supply systems requiring low dropout voltage and high current capability.
- Active terminators for SCSI bus applications.
- Embedded systems and IoT devices where space and power efficiency are critical.
- Industrial control systems and automation.
- Consumer electronics and telecommunications equipment.
Q & A
- What is the output voltage of the LT1117IST-3.3#TRPBF?
The output voltage is fixed at 3.3V. - What is the maximum output current of the LT1117IST-3.3#TRPBF?
The maximum output current is up to 800mA. - What is the dropout voltage of the LT1117IST-3.3#TRPBF?
The dropout voltage is a maximum of 1.2V at 800mA. - Does the LT1117IST-3.3#TRPBF have thermal protection?
Yes, it shuts down if the junction temperature exceeds 165°C. - What type of package does the LT1117IST-3.3#TRPBF come in?
The device is packaged in a 3-lead SOT-223. - Is the LT1117IST-3.3#TRPBF protected against short circuits?
Yes, it is protected against short circuit conditions. - What is the minimum load current required for the LT1117IST-3.3#TRPBF?
The minimum load current is 10mA. - What type of output capacitor is recommended for the LT1117IST-3.3#TRPBF?
A minimum of 10μF tantalum or 50μF aluminum electrolytic capacitor is recommended. - Is the LT1117IST-3.3#TRPBF pin compatible with older regulators?
Yes, it is pin compatible with older 3-terminal adjustable regulators. - What are some common applications of the LT1117IST-3.3#TRPBF?
Common applications include power supply systems, active terminators for SCSI bus, embedded systems, industrial control systems, and consumer electronics.
