Overview
The LD1086D2TTR, produced by STMicroelectronics, is a low drop voltage regulator designed to provide up to 1.5 A of output current. This regulator is known for its high efficiency and tight output voltage tolerance. It is pin-to-pin compatible with older 3-terminal adjustable regulators but offers improved performance in terms of dropout voltage and output tolerance. The LD1086D2TTR is available in various packages, including D²PAK, and operates over a wide temperature range from -40 °C to 125 °C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 1.8 V, 3.3 V, 5 V | V |
| Output Current | Up to 1.5 A | A |
| Dropout Voltage | Typical 1.3 V at 1.5 A | V |
| Output Tolerance | ± 1% at 25 °C, ± 2% in full temperature range | % |
| Input Voltage Range | 3.4 V to 30 V | V |
| Quiescent Current | Typical 5 mA | mA |
| Operating Temperature Range | -40 °C to 125 °C | °C |
| Package | D²PAK | - |
| Thermal Resistance Junction-Case | 3 °C/W | °C/W |
| Thermal Resistance Junction-Ambient | 62.5 °C/W | °C/W |
Key Features
- Typical dropout voltage of 1.3 V at 1.5 A
- 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
- Available in TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4) packages
- Pinout compatibility with standard adjustable voltage regulators
- High efficiency due to quiescent current flowing into the load
- Minimum 10 µF capacitor required for stability
Applications
The LD1086D2TTR is suitable for a variety of applications requiring stable and efficient voltage regulation. These include:
- Power supplies for electronic devices
- Industrial control systems
- Automotive systems (with appropriate automotive-grade versions)
- Consumer electronics
- Telecommunication equipment
Q & A
- What is the maximum output current of the LD1086D2TTR?
The LD1086D2TTR can provide up to 1.5 A of output current.
- What are the available output voltage options for the LD1086D2TTR?
The LD1086D2TTR is available with fixed output voltages of 1.8 V, 3.3 V, and 5 V, and it can also be configured as an adjustable voltage regulator.
- What is the typical dropout voltage of the LD1086D2TTR?
The typical dropout voltage is 1.3 V at 1.5 A.
- What is the operating temperature range of the LD1086D2TTR?
The operating temperature range is from -40 °C to 125 °C.
- What packages are available for the LD1086D2TTR?
The LD1086D2TTR is available in D²PAK, among other packages such as TO-220, D²PAK/A, DPAK, and DFN8 (4x4).
- What is the quiescent current of the LD1086D2TTR?
The quiescent current is typically 5 mA.
- How much thermal resistance does the D²PAK package have?
The thermal resistance junction-case for the D²PAK package is 3 °C/W, and the thermal resistance junction-ambient is 62.5 °C/W.
- What is the output voltage tolerance of the LD1086D2TTR?
The output voltage tolerance is ± 1% at 25 °C and ± 2% over the full temperature range.
- Does the LD1086D2TTR have internal protection features?
Yes, it has internal power and thermal limits for protection.
- How much capacitance is required for stability?
A minimum of 10 µF capacitor is required for stability.
