Overview
The LD1086DT18TR, produced by STMicroelectronics, is a low drop positive voltage regulator designed to provide high accuracy and reliability in various applications. This regulator is capable of delivering up to 1.5 A of output current and is available in several package types, including TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4 mm). 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 LD1086DT18TR is particularly suited for automotive and industrial applications due to its wide operating temperature range of -40 °C to 125 °C and its compliance with the AEC-Q100 specification for automotive-grade devices.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 1.8 V (fixed for LD1086DT18TR) | 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 | % |
| Operating Temperature Range | -40 °C to 125 °C | °C |
| Package Types | TO-220, D²PAK, D²PAK/A, DPAK, DFN8 (4x4 mm) | |
| Quiescent Current | 5 to 10 mA | mA |
| Thermal Resistance Junction-Case | Varies by package (e.g., 5 °C/W for TO-220) | °C/W |
| Thermal Resistance Junction-Ambient | Varies by package (e.g., 50 °C/W for TO-220) | °C/W |
Key Features
- Low dropout voltage: Typical 1.3 V at 1.5 A, decreasing at lower loads.
- High accuracy: Output voltage tolerance within ± 1% at 25 °C and ± 2% in full temperature range.
- Internal power and thermal limit: Ensures device protection against overheating and overcurrent.
- Wide operating temperature range: -40 °C to 125 °C, making it suitable for harsh environments.
- Pin-to-pin compatibility: Compatible with standard adjustable voltage regulators but with improved performance.
- Efficient quiescent current: Quiescent current flows into the load, increasing overall efficiency.
- Minimal external components: Only a 10 µF capacitor is required for stability.
- Automotive grade: Compliant with AEC-Q100 specification for automotive applications in TO-220 and DPAK packages.
Applications
- Automotive systems: Suitable for use in automotive electronics due to its compliance with AEC-Q100 and wide operating temperature range.
- Industrial control systems: Used in industrial environments where high reliability and accuracy are required.
- Power supplies: Ideal for use in power supply units where low dropout voltage and high current capability are necessary.
- Embedded systems: Can be used in various embedded systems requiring stable and efficient voltage regulation.
Q & A
- What is the maximum output current of the LD1086DT18TR?
The maximum output current is up to 1.5 A.
- What are the available output voltages for the LD1086 series?
The LD1086 series offers fixed output voltages of 1.8 V, 2.5 V, 3.3 V, 5 V, and 12 V, as well as adjustable output voltages.
- What is the typical dropout voltage of the LD1086DT18TR at 1.5 A?
The typical dropout voltage is 1.3 V at 1.5 A.
- What is the operating temperature range of the LD1086DT18TR?
The operating temperature range is -40 °C to 125 °C.
- Is the LD1086DT18TR compatible with older 3-terminal adjustable regulators?
- What is the quiescent current of the LD1086DT18TR?
The quiescent current is between 5 to 10 mA.
- Does the LD1086DT18TR require any external components for stability?
Yes, a minimum of 10 µF capacitor is required for stability.
- Is the LD1086DT18TR suitable for automotive applications?
- What are the available package types for the LD1086DT18TR?
The available package types include TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4 mm).
- What is the thermal resistance junction-case for the TO-220 package?
The thermal resistance junction-case for the TO-220 package is 5 °C/W.
