Overview
The LD1086D2T50 is a low drop voltage regulator produced by STMicroelectronics. It is capable of providing up to 1.5 A of output current, making it suitable for a variety of power management applications. The regulator features a maximum dropout voltage of 1.2 V at the maximum output current, which decreases at lower loads. This device is pin-to-pin compatible with older 3-terminal adjustable regulators but offers improved performance in terms of dropout and output tolerance. The LD1086D2T50 is available in several package types, including TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4), and requires only a minimum 10 μF capacitor for stability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Input Voltage | 30 | V |
| Output Current | Up to 1.5 | A |
| Dropout Voltage | 1.3 (typical) / 1.5 (maximum) | V |
| Output Voltage Tolerance | ± 1% at 25 °C, ± 2% in full temperature range | % |
| Operating Temperature Range | -40 to 125 | °C |
| Quiescent Current | 5 to 10 | mA |
| Thermal Resistance Junction-case | 3 (TO-220), 3 (D²PAK), 8 (DPAK) | °C/W |
| Package Types | TO-220, D²PAK, D²PAK/A, DPAK, DFN8 (4x4) |
Key Features
- Typical dropout voltage of 1.3 V at 1.5 A
- Three-terminal adjustable or fixed output voltage: 1.8 V, 3.3 V, 5 V
- Output current guaranteed up to 1.5 A
- Tight output voltage tolerance: ± 1% at 25 °C and ± 2% in full temperature range
- Internal power and thermal limit
- Wide operating temperature range: -40 °C to 125 °C
- Pinout compatibility with standard adjustable voltage regulators
- High efficiency due to quiescent current flowing into the load
Applications
The LD1086D2T50 is suitable for various applications requiring stable and efficient power management, such as:
- Industrial power supplies
- Consumer electronics
- Automotive systems
- Telecommunication equipment
- Medical devices
Q & A
- What is the maximum output current of the LD1086D2T50?
The LD1086D2T50 can provide up to 1.5 A of output current.
- What are the available fixed output voltages for the LD1086D2T50?
The available fixed output voltages are 1.8 V, 3.3 V, and 5 V.
- What is the typical dropout voltage of the LD1086D2T50?
The typical dropout voltage is 1.3 V at 1.5 A.
- What is the operating temperature range of the LD1086D2T50?
The operating temperature range is -40 °C to 125 °C.
- What packages are available for the LD1086D2T50?
The device is available in TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4) packages.
- How much quiescent current does the LD1086D2T50 consume?
The quiescent current is between 5 mA and 10 mA.
- Is the LD1086D2T50 pin-to-pin compatible with older 3-terminal adjustable regulators?
- What is the minimum capacitor required for stability?
A minimum of 10 μF capacitor is required for stability.
- Does the LD1086D2T50 have internal power and thermal limits?
- How efficient is the LD1086D2T50 compared to PNP regulators?
The LD1086D2T50 is more efficient because its quiescent current flows into the load, unlike PNP regulators where part of the output current is wasted as quiescent current.
