Overview
The LD1085V12 is a low drop positive voltage regulator produced by STMicroelectronics. It is capable of providing up to 3 A of output current and is available in both adjustable and fixed output voltage configurations. The LD1085V12 is particularly notable for its low dropout voltage, guaranteed at a maximum of 1.2 V at the maximum output current, which decreases at lower loads. This regulator is pin-to-pin compatible with older 3-terminal adjustable regulators but offers improved performance in terms of dropout and output tolerance. The device is supplied in various packages including TO-220, TO-220FP, D²PAK, and D²PAK/A, and it requires only a 10 µF minimum capacitor for stability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 12 V | V |
| Output Current | Up to 3 A | A |
| Dropout Voltage | Typical 1.3 V (at 3 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, TO-220FP, D²PAK, D²PAK/A | |
| Input Voltage | Up to 30 V | V |
| Quiescent Current | 5 to 10 mA | mA |
Key Features
- Low dropout voltage: Typical 1.3 V at 3 A output current.
- Adjustable or fixed output voltage: Available in various fixed voltages including 12 V.
- High output current: Up to 3 A.
- Tight output voltage tolerance: ± 1% at 25 °C and ± 2% in full temperature range.
- Internal power and thermal limit: Ensures safe operation under various conditions.
- Wide operating temperature range: -40 °C to 125 °C.
- Pinout compatibility with standard adjustable VREG.
- Efficient operation: Quiescent current flows into the load, increasing efficiency.
Applications
The LD1085V12 is suitable for a variety of applications requiring stable and efficient voltage regulation. These include:
- Industrial control systems
- Power supplies for electronic equipment
- Active termination for SCSI-2 interfaces (for specific voltage versions).
- General-purpose voltage regulation in high-current applications
Q & A
- What is the maximum output current of the LD1085V12?
The LD1085V12 can provide up to 3 A of output current.
- What is the typical dropout voltage of the LD1085V12?
The typical dropout voltage is 1.3 V at 3 A output current.
- What are the available package types for the LD1085V12?
The device is available in TO-220, TO-220FP, D²PAK, and D²PAK/A packages.
- What is the operating temperature range of the LD1085V12?
The operating temperature range is -40 °C to 125 °C.
- How much quiescent current does the LD1085V12 consume?
The quiescent current is between 5 to 10 mA.
- Is the LD1085V12 pin-to-pin compatible with older 3-terminal adjustable regulators?
- What is the minimum capacitor required for stability?
A minimum of 10 µF capacitor is required for stability.
- What is the output voltage tolerance of the LD1085V12?
The output voltage tolerance is ± 1% at 25 °C and ± 2% in the full temperature range.
- Does the LD1085V12 have internal power and thermal limits?
- What are some typical applications for the LD1085V12?
