Overview
The LD1086DTTR, produced by STMicroelectronics, is a 1.5 A adjustable and fixed low drop positive voltage regulator. This device is part of the LD1086 series, known for its high performance and versatility. It is designed to provide a stable output voltage with minimal dropout, making it suitable for a wide range of applications. The LD1086DTTR is available in various packages, including DPAK, and is pin-to-pin compatible with older 3-terminal adjustable voltage regulators, offering improved performance in terms of dropout voltage and output tolerance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Input Voltage | 30 | V |
| Output Current | Up to 1.5 A | A |
| Output Voltage | Adjustable or fixed: 1.8 V, 2.5 V, 3.3 V, 5 V, 12 V | V |
| Dropout Voltage | Typical 1.3 V at 1.5 A | V |
| Output Tolerance | ± 1% at 25 °C, ± 2% in full temperature range | % |
| Operating Temperature Range | -40 °C to 125 °C | °C |
| Package | DPAK, TO-220, D²PAK, D²PAK/A, DFN8 (4x4 mm) | |
| Quiescent Current | 5 to 10 mA | mA |
| Thermal Resistance Junction-Case | 1.5 °C/W (DPAK) | °C/W |
| Thermal Resistance Junction-Ambient | 33 °C/W (DPAK) | °C/W |
Key Features
- Low dropout voltage: Typical 1.3 V at 1.5 A, decreasing at lower loads.
- Adjustable or fixed output voltage options: 1.8 V, 2.5 V, 3.3 V, 5 V, 12 V.
- High output current capability: Up to 1.5 A.
- Tight output voltage tolerance: ± 1% at 25 °C and ± 2% in full temperature range.
- Internal power and thermal limit protection.
- Wide operating temperature range: -40 °C to 125 °C.
- Pin-to-pin compatibility with standard adjustable voltage regulators.
- Efficient operation: Quiescent current flows into the load, increasing efficiency.
- Minimum stability capacitor requirement: 10 µF.
Applications
- Power supplies for industrial and consumer electronics.
- Automotive systems: Available in automotive grade for adjustable output voltages in TO-220 and DPAK packages.
- Embedded systems requiring stable and efficient voltage regulation.
- Telecommunication equipment.
- Medical devices.
Q & A
- What is the maximum output current of the LD1086DTTR?
The maximum output current is up to 1.5 A. - What are the available output voltage options for the LD1086DTTR?
The output voltage can be adjustable or fixed at 1.8 V, 2.5 V, 3.3 V, 5 V, or 12 V. - What is the typical dropout voltage of the LD1086DTTR at 1.5 A?
The typical dropout voltage is 1.3 V at 1.5 A. - What is the operating temperature range of the LD1086DTTR?
The operating temperature range is -40 °C to 125 °C. - What packages are available for the LD1086DTTR?
The device is available in DPAK, TO-220, D²PAK, D²PAK/A, and DFN8 (4x4 mm) packages. - What is the quiescent current of the LD1086DTTR?
The quiescent current is between 5 to 10 mA. - Does the LD1086DTTR have internal protection features?
Yes, it has internal power and thermal limit protection. - Is the LD1086DTTR compatible with older 3-terminal adjustable voltage regulators?
Yes, it is pin-to-pin compatible with older 3-terminal adjustable voltage regulators. - What is the minimum capacitor requirement for stability?
The minimum stability capacitor requirement is 10 µF. - Is the LD1086DTTR suitable for automotive applications?
Yes, it is available in automotive grade for adjustable output voltages in TO-220 and DPAK packages.
