Overview
The LD1086DT25TR is a low drop voltage regulator produced by STMicroelectronics. It is capable of providing up to 1.5 A of output current with a guaranteed 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 drop and output tolerance. The LD1086DT25TR features on-chip trimming, which allows it to achieve a tight output voltage tolerance of ± 1% at 25 °C and ± 2% over the full temperature range. It is available in various packages including TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4).
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | Up to 1.5 A | A |
| 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 |
| Quiescent Current | 5 - 10 mA | mA |
| Package Options | TO-220, D²PAK, D²PAK/A, DPAK, DFN8 (4x4) | - |
| Input Voltage Range | 3.4 V to 30 V | V |
Key Features
- Typical dropout voltage of 1.3 V at 1.5 A output current.
- Three-terminal adjustable or fixed output voltage options: 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 for protection.
- Wide operating temperature range: -40 °C to 125 °C.
- Pinout compatibility with standard adjustable voltage regulators.
- Only a 10 µF (minimum) capacitor required for stability.
Applications
The LD1086DT25TR is suitable for a variety of applications that require a stable and efficient voltage supply. These include:
- Power supplies for electronic devices requiring high current and low dropout voltage.
- Industrial control systems where reliable voltage regulation is crucial.
- Automotive systems that need robust and efficient voltage regulators.
- Consumer electronics such as audio equipment, medical devices, and other applications requiring stable DC power.
Q & A
- What is the maximum output current of the LD1086DT25TR?
The LD1086DT25TR can provide up to 1.5 A of output current.
- What is the typical dropout voltage of the LD1086DT25TR?
The typical dropout voltage is 1.3 V at 1.5 A output current.
- What are the available output voltage options for the LD1086DT25TR?
The LD1086DT25TR is available with fixed output voltages of 1.8 V, 3.3 V, and 5 V, as well as adjustable output voltage.
- What is the operating temperature range of the LD1086DT25TR?
The operating temperature range is -40 °C to 125 °C.
- What packages are available for the LD1086DT25TR?
The LD1086DT25TR is available in TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4) packages.
- How much quiescent current does the LD1086DT25TR consume?
The quiescent current is between 5 mA and 10 mA.
- Is the LD1086DT25TR pin-to-pin compatible with older 3-terminal adjustable regulators?
Yes, the LD1086DT25TR is pin-to-pin compatible with older 3-terminal adjustable regulators but offers better performance.
- What is the minimum capacitor required for stability?
A minimum of 10 µF capacitor is required for stability.
- Does the LD1086DT25TR have internal protection features?
Yes, it has internal power and thermal limit protection features.
- What is the output voltage tolerance of the LD1086DT25TR?
The output voltage tolerance is ± 1% at 25 °C and ± 2% in the full temperature range.
