Overview
The LD1084V is a low-drop voltage regulator produced by STMicroelectronics. This regulator is capable of providing up to 5 A of output current and features a maximum dropout voltage of 1.5 V at the maximum output current. It 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. The LD1084V is available in the TO-220 package and operates over a wide temperature range from -40 °C to 125 °C, making it suitable for various applications requiring high current and low voltage drop.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Output Current (IO) | - | - | 5 A | A |
| Dropout Voltage (Vd) | - | 1.3 V | 1.5 V | V |
| Reference Voltage (Vref) | 1.225 V | 1.25 V | 1.275 V | V |
| Line Regulation (ΔVO) | 0.015 % | 0.2 % | - | % |
| Load Regulation (ΔVO) | 0.1 % | 0.3 % | - | % |
| Operating Temperature Range (TOP) | -40 °C | - | 125 °C | °C |
| Thermal Resistance Junction-Case (RthJC) | - | - | 3 °C/W | °C/W |
| Thermal Resistance Junction-Ambient (RthJA) | - | - | 50 °C/W | °C/W |
| Package | - | - | TO-220 | - |
Key Features
- Low Dropout Voltage: Guaranteed maximum dropout voltage of 1.5 V at 5 A output current.
- Adjustable Output Voltage: Three-terminal adjustable output voltage configuration.
- High Output Current: Capable of providing up to 5 A of output current.
- Tight Output Tolerance: Output voltage tolerance of ±1% at 25 °C and ±2% over the full temperature range.
- Internal Protection: Internal power and thermal limiting for enhanced reliability.
- Wide Operating Temperature Range: Operates from -40 °C to 125 °C.
- Pin Compatibility: Pin-to-pin compatible with standard adjustable voltage regulators.
- Efficient Quiescent Current: Quiescent current flows into the load, increasing efficiency.
Applications
The LD1084V is suitable for a variety of applications requiring high current and low voltage drop, including:
- Power supplies for industrial and automotive systems.
- High-current linear voltage regulation in electronic devices.
- Systems requiring tight output voltage tolerance and high reliability.
- Applications where space is limited and high thermal performance is necessary.
Q & A
- What is the maximum output current of the LD1084V?
The LD1084V can provide up to 5 A of output current.
- What is the maximum dropout voltage of the LD1084V?
The maximum dropout voltage is guaranteed at 1.5 V at the maximum output current.
- What is the operating temperature range of the LD1084V?
The LD1084V operates from -40 °C to 125 °C.
- What package is the LD1084V available in?
The LD1084V is available in the TO-220 package.
- Is the LD1084V pin-to-pin compatible with other regulators?
- What is the output voltage tolerance of the LD1084V?
The output voltage tolerance is ±1% at 25 °C and ±2% over the full temperature range.
- Does the LD1084V have internal protection features?
- What is the minimum capacitor required for stability?
A minimum capacitor of 10 µF is required for stability.
- How does the quiescent current of the LD1084V contribute to efficiency?
The quiescent current flows into the load, increasing efficiency.
- What are some typical applications of the LD1084V?
It is used in power supplies for industrial and automotive systems, high-current linear voltage regulation, and systems requiring tight output voltage tolerance and high reliability.
