Overview
The LD1086PUR, produced by STMicroelectronics, is a low drop voltage regulator designed to provide up to 1.5 A of output current. This regulator is available in a DFN8 (4x4 mm) package and is pin-to-pin compatible with older 3-terminal adjustable regulators, offering improved performance in terms of dropout voltage and output tolerance. The LD1086PUR features a typical dropout voltage of 1.3 V at 1.5 A, making it efficient for various applications. It also includes internal power and thermal limits, ensuring reliable operation over a wide temperature range of -40 °C to 125 °C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 1.8 V, 3.3 V, 5 V (fixed), adjustable | 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 | % |
| Quiescent Current | 5 to 10 mA | mA |
| Operating Temperature Range | -40 °C to 125 °C | °C |
| Package | DFN8 (4x4 mm) | - |
| Thermal Resistance Junction-Ambient | 33 °C/W | °C/W |
Key Features
- Typical dropout voltage of 1.3 V at 1.5 A
- Three-terminal adjustable or fixed output voltage: 1.8 V, 3.3 V, 5 V
- Output current guaranteed up to 1.5 A
- Output tolerance: ± 1% at 25 °C and ± 2% in full temperature range
- Internal power and thermal limits
- Wide operating temperature range: -40 °C to 125 °C
- Pinout compatibility with standard adjustable voltage regulators
- Only a 10 µF (minimum) capacitor needed for stability
Applications
The LD1086PUR is suitable for a variety of applications, including but not limited to:
- Power supplies for industrial and consumer electronics
- Automotive systems (available in automotive grade for adjustable output voltages)
- Embedded systems requiring stable and efficient voltage regulation
- Telecommunication equipment
- Medical devices requiring precise voltage control
Q & A
- What is the maximum output current of the LD1086PUR?
The maximum output current is up to 1.5 A. - What are the available fixed output voltages for the LD1086PUR?
The available fixed output voltages are 1.8 V, 3.3 V, and 5 V. - What is the typical dropout voltage of the LD1086PUR at 1.5 A?
The typical dropout voltage is 1.3 V at 1.5 A. - What is the operating temperature range of the LD1086PUR?
The operating temperature range is -40 °C to 125 °C. - What package is the LD1086PUR available in?
The LD1086PUR is available in a DFN8 (4x4 mm) package. - Is the LD1086PUR pin-to-pin compatible with older regulators?
Yes, it is 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. - Does the LD1086PUR have internal power and thermal limits?
Yes, it includes internal power and thermal limits. - Is the LD1086PUR available in an automotive grade?
Yes, it is available in an automotive grade for adjustable output voltages. - What is the thermal resistance junction-ambient for the DFN8 package?
The thermal resistance junction-ambient is 33 °C/W.
