Overview
The LD1086D2T12TR is a low drop voltage regulator produced by STMicroelectronics. It is capable of providing up to 1.5 A of output current and features a maximum dropout voltage of 1.2 V at the maximum output current, decreasing at lower loads. This regulator is pin-to-pin compatible with older 3-terminal adjustable regulators but offers improved performance in terms of dropout and output tolerance. Unlike PNP regulators, the LD1086's quiescent current flows into the load, enhancing efficiency. The device requires only a 10 µF (minimum) capacitor for stability and is available in various packages including TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4 mm).
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | Up to 1.5 A | A |
| Typical Dropout Voltage | 1.3 V at 1.5 A | V |
| Output Voltage Tolerance | ± 1% at 25 °C, ± 2% in full temperature range | % |
| Operating Temperature Range | -40 °C to 125 °C | °C |
| Package Options | TO-220, D²PAK, D²PAK/A, DPAK, DFN8 (4x4 mm) | - |
| Input Voltage Range | 3.4 V to 30 V | V |
| Quiescent Current | 5 to 10 mA | mA |
Key Features
- Three-terminal adjustable or fixed output voltage: 1.8 V, 2.5 V, 3.3 V, 5 V, 12 V
- Internal power and thermal limit for enhanced reliability
- Pinout compatibility with standard adjustable voltage regulators
- Automotive grade available for adjustable output voltages in TO-220 and DPAK packages
- On-chip trimming for tight output voltage tolerance within ± 1% at 25 °C
- Wide operating temperature range of -40 °C to 125 °C
Applications
The LD1086D2T12TR is suitable for a variety of applications requiring stable and efficient voltage regulation. These include:
- Automotive systems, particularly where the device is available in automotive grade
- Industrial power supplies and control systems
- Consumer electronics requiring low dropout and high current output
- Telecommunication equipment and networking devices
Q & A
- What is the maximum output current of the LD1086D2T12TR?
The LD1086D2T12TR can provide up to 1.5 A of output current.
- What is the typical dropout voltage of the LD1086D2T12TR?
The typical dropout voltage is 1.3 V at 1.5 A.
- What are the available output voltages for the LD1086D2T12TR?
The available output voltages are 1.8 V, 2.5 V, 3.3 V, 5 V, and 12 V.
- What is the operating temperature range of the LD1086D2T12TR?
The operating temperature range is -40 °C to 125 °C.
- What packages are available for the LD1086D2T12TR?
The device is available in TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4 mm) packages.
- Is the LD1086D2T12TR compatible with older 3-terminal adjustable regulators?
Yes, it is pin-to-pin compatible with older 3-terminal adjustable regulators but offers better performance.
- What is the quiescent current of the LD1086D2T12TR?
The quiescent current is 5 to 10 mA.
- Does the LD1086D2T12TR have internal power and thermal limits?
Yes, it has internal power and thermal limits for enhanced reliability.
- Is the LD1086D2T12TR available in automotive grade?
Yes, it is available in automotive grade for adjustable output voltages in TO-220 and DPAK packages.
- What is the minimum capacitor required for stability?
A minimum of 10 µF capacitor is required for stability.
