The AMS1117 is a popular SMD package 3-pin voltage regulator that is available in many models for fixed and adjustable voltage requirements. The IC can deliver a maximum current of 1 A and the output voltage can vary from 1.5 V to 5 V. It also has a low dropout voltage of 1.3 V when operating at maximum current.
Pin Configuration
| ADJ/GND (Pin 1) |
This pin adjusts the output voltage if it is a fixed voltage regulator, it acts as a ground |
| Vout (Pin 2) |
The regulated output voltage set by the adjusted pin can be obtained, from this pin |
| Vin (Pin 3) |
The input voltage which has to be regulated is given to this pin |
Features
- It has a low dropout voltage
- Its load regulation is 0.2% typical
- It is optimized for low voltage
- It has on-chip thermal limiting
- It has a built-in thermal shutdown
- It has good noise rejection
- It has three-terminal adjustable or fixed low dropout
Applications
- Used for Positive voltage regulations
- Variable power supply
- Current limiting circuits
- Reverse polarity circuits
- Commonly used in Desktop PC, DVD and other consumer products
- Used in motor control circuits
- High-Efficiency Linear Regulators
- Post Regulators for Switching Supplies
- Battery ChargersActive SCSI Terminators
- Power Management for NotebookBattery
- Powered Instrumentation
Specification
| Package | SOT-223 |
| Output Voltage | 5 V |
| Max Output Current | 1 A |
| Load Regulation | 0.4% (Maximum) |
| Maximum Drop-out Voltage | 1.3 V |
| Operating junction temperature | 125 °C |
| Country of Origin | China |
