Overview
The LD1117DT12TR, produced by STMicroelectronics, is a low dropout voltage regulator designed to provide a stable output voltage with high efficiency. This component is part of the LD1117 series, which offers both fixed and adjustable output voltage options. The LD1117DT12TR specifically provides a fixed output voltage of 1.2 V. It is capable of delivering up to 800 mA of output current, making it suitable for a variety of applications requiring stable and efficient voltage regulation.
Key Specifications
| Parameter | Min. | Max. | Unit | |
|---|---|---|---|---|
| Output Voltage (VO) | 1.188 | 1.20 | 1.212 | V |
| Output Current (IO) | 0 | - | 800 | mA |
| Dropout Voltage (Vd) | 1 | - | 1.2 | V |
| Line Regulation (∆VO) | 0.035 | 0.2 | - | % |
| Load Regulation (∆VO) | 0.1 | 0.4 | - | % |
| Quiescent Current (Id) | 5 | 10 | - | mA |
| Supply Voltage Rejection (SVR) | 60 | 75 | - | dB |
| Operating Input Voltage (Vin) | - | - | 15 | V |
| Thermal Resistance Junction-Case (RthJC) | - | - | 15 | °C/W |
| Thermal Resistance Junction-Ambient (RthJA) | - | - | 110 | °C/W |
Key Features
- Low Dropout Voltage: Typical dropout voltage of 1 V, ensuring high efficiency.
- High Output Current: Capable of delivering up to 800 mA of output current.
- Fixed Output Voltage: The LD1117DT12TR provides a fixed output voltage of 1.2 V.
- Adjustable Version Availability: Although the DT12TR is fixed, the LD1117 series also offers adjustable versions.
- Internal Current and Thermal Limit: Built-in current and thermal limiting for protection.
- Tight Output Voltage Tolerance: Output voltage tolerance within ± 1 % at 25 °C.
- High Supply Voltage Rejection: Supply voltage rejection of up to 75 dB.
- Compact Packages: Available in SOT-223, DPAK, SO-8, and TO-220 packages, optimizing thermal characteristics and space savings.
Applications
- Power Supplies: Suitable for use in various power supply designs requiring low dropout voltage and high current capability.
- Embedded Systems: Ideal for embedded systems that need stable and efficient voltage regulation.
- Industrial Automation: Used in industrial automation systems where reliable voltage regulation is critical.
- Consumer Electronics: Applicable in consumer electronics such as audio equipment, medical devices, and other electronic appliances.
- Automotive Systems: Can be used in automotive systems that require robust and efficient voltage regulation.
Q & A
- What is the maximum output current of the LD1117DT12TR?
The LD1117DT12TR can deliver up to 800 mA of output current.
- What is the fixed output voltage of the LD1117DT12TR?
The fixed output voltage of the LD1117DT12TR is 1.2 V.
- What is the typical dropout voltage of the LD1117DT12TR?
The typical dropout voltage is 1 V.
- What are the available packages for the LD1117 series?
The LD1117 series is available in SOT-223, DPAK, SO-8, and TO-220 packages.
- Does the LD1117DT12TR have built-in protection features?
Yes, it has internal current and thermal limiting for protection.
- What is the supply voltage rejection of the LD1117DT12TR?
The supply voltage rejection is up to 75 dB.
- What is the operating input voltage range for the LD1117DT12TR?
The operating input voltage range is up to 15 V.
- Is the LD1117DT12TR suitable for high-temperature environments?
Yes, it operates within a junction temperature range of 0 to 125 °C.
- What is the quiescent current of the LD1117DT12TR?
The quiescent current is typically 10 mA.
- Does the LD1117 series offer adjustable output voltage options?
Yes, the LD1117 series includes adjustable versions, although the DT12TR is a fixed version.
