Overview
The LD1086V80 is a low drop voltage regulator produced by STMicroelectronics. It is part of the LD1086 series, which offers both adjustable and fixed output voltage options. The LD1086V80 specifically provides a fixed output voltage of 8.0 volts. This regulator is capable of delivering up to 1.5 A of output current and features a typical dropout voltage of 1.3 V at the maximum output current. The device is designed to be pin-to-pin compatible with older 3-terminal adjustable regulators but offers improved performance in terms of dropout voltage and output tolerance.
Key Specifications
| Parameter | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Output Voltage (VO) | IO = 0 mA, TJ = 25 °C | 7.92 | 8.0 | 8.08 | V |
| Output Voltage (VO) | IO = 0 to 1.5 A, VI = 10.4 to 30 V | 7.84 | 8.0 | 8.16 | V |
| Line Regulation (∆VO) | IO = 0 mA, VI = 10.4 to 20 V, TJ = 25 °C | 0.5 | 10 | 10 | mV |
| Load Regulation (∆VO) | IO = 0 to 1.5 A, TJ = 25 °C | 5 | 20 | 20 | mV |
| Dropout Voltage (Vd) | IO = 1.5 A | 1.3 | 1.5 | 1.5 | V |
| Quiescent Current (Iq) | VI ≤ 30 V | 5 | 10 | 10 | mA |
| Short-Circuit Current (Isc) | VI - VO = 5 V | 1.5 | 2 | 2 | A |
| Thermal Resistance Junction-Case (RthJC) | TO-220 | - | 5 | - | °C/W |
| Thermal Resistance Junction-Ambient (RthJA) | TO-220 | - | 50 | - | °C/W |
| Operating Temperature Range | - | -40 | - | 125 | °C |
Key Features
- Low Dropout Voltage: Typical dropout voltage of 1.3 V at 1.5 A, decreasing at lower loads.
- High Output Current: Guaranteed up to 1.5 A.
- Tight Output Voltage Tolerance: ±1% at 25 °C and ±2% over the full temperature range.
- Internal Power and Thermal Limit: Built-in protection against overcurrent and overheating.
- Wide Operating Temperature Range: From -40 °C to 125 °C.
- Multiple Package Options: Available in TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4) packages.
- Pinout Compatibility: Compatible with standard adjustable voltage regulators.
- Efficient Quiescent Current: Quiescent current flows into the load, increasing efficiency.
- Automotive Grade: Available for adjustable output voltages in TO-220 and DPAK packages, qualified according to AEC-Q100 specification.
Applications
- Automotive Systems: Suitable for automotive applications due to its wide operating temperature range and compliance with AEC-Q100 standards.
- Industrial Power Supplies: Ideal for use in industrial power supplies where high current and low dropout voltage are required.
- Consumer Electronics: Used in various consumer electronics requiring stable and efficient voltage regulation.
- Medical Devices: Can be used in medical devices that require reliable and precise voltage regulation.
- Telecommunications: Suitable for telecommunications equipment needing stable and efficient power supply solutions.
Q & A
- What is the typical dropout voltage of the LD1086V80 at 1.5 A?
The typical dropout voltage is 1.3 V at 1.5 A.
- What is the maximum output current of the LD1086V80?
The maximum output current is guaranteed up to 1.5 A.
- What are the available package options for the LD1086V80?
The device is available in TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4) packages.
- What is the operating temperature range of the LD1086V80?
The operating temperature range is from -40 °C to 125 °C.
- Is the LD1086V80 compatible with standard adjustable voltage regulators?
- What is the output voltage tolerance of the LD1086V80 at 25 °C?
- Does the LD1086V80 have built-in thermal protection?
- What is the minimum capacitor required for stability?
- Is the LD1086V80 suitable for automotive applications?
- What is the quiescent current characteristic of the LD1086V80?
