Overview
The LD1086VY, produced by STMicroelectronics, is a low drop voltage regulator designed to provide up to 1.5 A of output current. This regulator is known for its high efficiency and low dropout voltage, making it suitable for a variety of applications. It is pin-to-pin compatible with older 3-terminal adjustable regulators but offers improved performance in terms of dropout voltage and output tolerance. The LD1086VY is available in several package types, including TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4), and operates over a wide temperature range from -40 °C to 125 °C.
Key Specifications
| Parameter | Test Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Output Voltage (VO) | IO = 0 mA, TJ = 25 °C | 3.267 | 3.3 | 3.333 | V |
| Output Voltage (VO) | IO = 0 to 1.5 A, VI = 4.9 to 30 V | 3.234 | 3.3 | 3.366 | V |
| Line Regulation (ΔVO) | IO = 0 mA, VI = 4.9 to 18 V, TJ = 25 °C | 0.5 | 6 | 10 | mV |
| Load Regulation (ΔVO) | IO = 0 to 1.5 A, TJ = 25 °C | 1 | 10 | 25 | 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 | |
| Thermal Regulation | TA = 25 °C, 30 ms pulse | 0.008 | 0.04 | %/W | |
| Supply Voltage Rejection (SVR) | f = 120 Hz, CO = 25 µF, IO = 1.5 A | 60 | 79 | dB | |
| RMS Output Noise Voltage (eN) | TA = 25 °C, f = 10 Hz to 10 kHz | 0.003 | % |
Key Features
- Typical dropout voltage of 1.3 V at 1.5 A output current
- Three-terminal adjustable or fixed output voltage options: 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 limit
- Wide operating temperature range: -40 °C to 125 °C
- Available in TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4) packages
- Pinout compatibility with standard adjustable voltage regulators
- Only a 10 µF capacitor required for stability
Applications
The LD1086VY is suitable for various applications requiring high current and low dropout voltage, such as:
- Power supplies for industrial and consumer electronics
- Automotive systems (automotive grade versions available)
- Telecommunication equipment
- Medical devices
- Embedded systems and microcontrollers
Q & A
- What is the maximum output current of the LD1086VY?
The LD1086VY can provide up to 1.5 A of output current.
- What are the available output voltage options for the LD1086VY?
The LD1086VY is available with fixed output voltages of 1.8 V, 3.3 V, and 5 V, and it can also be configured as an adjustable voltage regulator.
- What is the typical dropout voltage of the LD1086VY at maximum output current?
The typical dropout voltage is 1.3 V at 1.5 A output current.
- What is the output voltage tolerance of the LD1086VY?
The output voltage tolerance is ± 1% at 25 °C and ± 2% over the full temperature range.
- What are the package options available for the LD1086VY?
The LD1086VY is available in TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4) packages.
- What is the operating temperature range of the LD1086VY?
The operating temperature range is from -40 °C to 125 °C.
- Is the LD1086VY pinout compatible with older 3-terminal adjustable regulators?
- What is the quiescent current of the LD1086VY?
The quiescent current is typically 5 mA and can be up to 10 mA.
- What is the short-circuit current of the LD1086VY?
The short-circuit current is typically 1.5 A when VI - VO = 5 V and up to 2 A.
- What is the thermal regulation of the LD1086VY?
The thermal regulation is 0.008 to 0.04 %/W at 25 °C with a 30 ms pulse.
