Overview
The LD1085V25 is a low drop positive voltage regulator produced by STMicroelectronics. This regulator is capable of providing up to 3 A of output current and is available in both adjustable and fixed output voltage configurations. The LD1085V25 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 device is pin-to-pin compatible with older 3-terminal adjustable regulators but offers improved performance in terms of dropout and output tolerance. Unlike PNP regulators, the LD1085V25's quiescent current flows into the load, enhancing efficiency. Only a 10 μF minimum capacitor is required for stability.
Key Specifications
| Parameter | Typical | Minimum | Maximum | Unit |
|---|---|---|---|---|
| Output Voltage | 2.5 | 2.45 | 2.55 | V |
| Output Current | 3 | - | 3 | A |
| Dropout Voltage | 1.3 | 1.2 | 1.5 | V |
| Output Tolerance | ±1% at 25°C | - | ±2% in full temperature range | % |
| Input Voltage Range | - | 4.25 | 30 | V |
| Quiescent Current | 5 | - | 10 | mA |
| Operating Temperature Range | - | -40 | 125 | °C |
| Package | - | - | TO-220, TO-220FP, D²PAK, D²PAK/A | - |
Key Features
- Typical dropout voltage of 1.3 V at 3 A
- Three-terminal adjustable or fixed output voltage (1.8 V, 2.5 V, 3.3 V, 5 V)
- Guaranteed output current up to 3 A
- Output tolerance of ±1% at 25°C and ±2% in full temperature range
- Internal power and thermal limit
- Wide operating temperature range from -40°C to 125°C
- Pinout compatibility with standard adjustable voltage regulators
- Quiescent current flows into the load, increasing efficiency
- Minimum 10 μF capacitor required for stability
Applications
The LD1085V25 is suitable for a variety of applications where a stable and efficient voltage regulation is required. These include:
- Industrial control systems
- Power supplies for electronic equipment
- Automotive systems requiring stable voltage regulation
- Telecommunication equipment
- Consumer electronics needing reliable power management
Q & A
- What is the maximum output current of the LD1085V25?
The LD1085V25 can provide up to 3 A of output current.
- What are the available output voltage options for the LD1085V25?
The LD1085V25 is available with fixed output voltages of 1.8 V, 2.5 V, 3.3 V, and 5 V.
- What is the typical dropout voltage of the LD1085V25?
The typical dropout voltage is 1.3 V at 3 A.
- What is the operating temperature range of the LD1085V25?
The operating temperature range is from -40°C to 125°C.
- What packages are available for the LD1085V25?
The device is available in TO-220, TO-220FP, D²PAK, and D²PAK/A packages.
- Is the LD1085V25 pin-to-pin compatible with older regulators?
Yes, it is pin-to-pin compatible with standard adjustable voltage regulators.
- What is the minimum capacitor required for stability?
A minimum of 10 μF capacitor is required for stability.
- How does the quiescent current of the LD1085V25 affect efficiency?
The quiescent current flows into the load, increasing efficiency compared to PNP regulators.
- What is the maximum input voltage that can be applied to the LD1085V25?
The maximum input voltage is 30 V.
- What are some common applications for the LD1085V25?
Common applications include industrial control systems, power supplies, automotive systems, telecommunication equipment, and consumer electronics.
