Overview
The LD1086V12 is a low drop voltage regulator produced by STMicroelectronics, designed to provide up to 1.5 A of output current. It is part of the LD1086 series, which offers both adjustable and fixed output voltage options. The LD1086V12 specifically provides a fixed output voltage of 12 V. This regulator is known for its high efficiency, with a typical dropout voltage of 1.3 V at the maximum output current, decreasing at lower loads. It 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 available in various packages, including TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4), making it versatile for different application needs.
Key Specifications
| Parameter | Test Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Output Voltage (VO) | IO = 0 mA, TJ = 25 °C | 11.88 | 12 | 12.12 | V |
| Output Voltage (VO) | IO = 0 to 1.5 A, VI = 13.8 to 30 V | 11.76 | 12 | 12.24 | V |
| Line Regulation (ΔVO) | IO = 0 mA, VI = 13.8 to 25 V, TJ = 25 °C | 1 | - | 25 | mV |
| Load Regulation (ΔVO) | IO = 0 to 1.5 A, TJ = 25 °C | 12 | - | 36 | mV |
| Dropout Voltage (Vd) | IO = 1.5 A | 1.3 | - | 1.5 | V |
| Quiescent Current (Iq) | VI ≤ 30 V | 5 | - | 10 | mA |
| Short-Circuit Current (Isc) | VI - VO = 5 V | 1.5 | - | 2 | A |
| Operating Temperature Range | - | -40 | - | 125 | °C |
Key Features
- Typical dropout voltage of 1.3 V at 1.5 A, with a maximum dropout of 1.2 V at maximum output current.
- Fixed output voltage of 12 V, with options for other fixed voltages (1.8 V, 2.5 V, 3.3 V, 5 V) in the LD1086 series.
- Output current guaranteed up to 1.5 A.
- Output tolerance: ± 1% at 25 °C and ± 2% in the full temperature range.
- Internal power and thermal limit for enhanced reliability.
- Wide operating temperature range: -40 °C to 125 °C.
- Available in various packages: TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4).
- Pinout compatibility with standard adjustable voltage regulators.
- Automotive grade available for adjustable output voltages in TO-220 and DPAK packages.
Applications
The LD1086V12 is suitable for a variety of applications requiring a stable and efficient voltage regulation. These include:
- Power supplies for industrial and consumer electronics.
- Automotive systems, especially where high reliability and wide temperature range are critical.
- Telecommunication equipment.
- Medical devices requiring stable voltage regulation.
- Embedded systems and IoT devices.
Q & A
- What is the maximum output current of the LD1086V12?
The LD1086V12 can provide up to 1.5 A of output current.
- What is the typical dropout voltage of the LD1086V12?
The typical dropout voltage is 1.3 V at 1.5 A).
- What are the available output voltages for the LD1086 series?
The LD1086 series offers fixed output voltages of 1.8 V, 2.5 V, 3.3 V, 5 V, and 12 V, as well as adjustable output voltage options).
- What is the operating temperature range of the LD1086V12?
The operating temperature range is -40 °C to 125 °C).
- What packages are available for the LD1086V12?
The device is available in TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4) packages).
- Is the LD1086V12 compatible with older 3-terminal adjustable regulators?
Yes, the LD1086V12 is pin-to-pin compatible with older 3-terminal adjustable regulators but offers better performance in terms of drop and output tolerance).
- What is the quiescent current characteristic of the LD1086V12?
The quiescent current flows into the load, increasing efficiency, unlike PNP regulators where part of the output current is wasted as quiescent current).
- Does the LD1086V12 require any external components for stability?
Only a minimum 10 µF capacitor is needed for stability).
- Is the LD1086V12 qualified for automotive applications?
Yes, the LD1086 series is available as automotive grade for adjustable output voltages in TO-220 and DPAK packages, qualified according to the AEC-Q100 specification).
- What is the output voltage tolerance of the LD1086V12?
The output voltage tolerance is ± 1% at 25 °C and ± 2% in the full temperature range).
