Overview
The LD1086DTTRY is a low drop voltage regulator produced by STMicroelectronics. It is capable of providing up to 1.5 A of output current and features a maximum dropout voltage 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 drop and output tolerance. The LD1086DTTRY is designed to increase efficiency by ensuring that the quiescent current flows into the load, rather than being wasted. It requires only a 10 μF (minimum) capacitor for stability and is available in various packages including TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4 mm).
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | Up to 1.5 A | A |
| Dropout Voltage | 1.3 V at 1.5 A | V |
| Output Voltage Tolerance | ± 1% at 25 °C, ± 2% in full temperature range | % |
| Output Voltage Options | 1.8 V, 3.3 V, 5 V | V |
| Operating Temperature Range | -40 °C to 125 °C | °C |
| Package Options | TO-220, D²PAK, D²PAK/A, DPAK, DFN8 (4x4 mm) | - |
| Quiescent Current | 5-10 mA | mA |
| Thermal Resistance (Junction to Case) | 5 °C/W (TO-220), 3 °C/W (D²PAK), 8 °C/W (D²PAK/A), 1.5 °C/W (DPAK), 33 °C/W (DFN8) | °C/W |
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
- Tight output voltage tolerance: ± 1% at 25 °C and ± 2% in full temperature range
- Internal power and thermal limit for protection
- Wide operating temperature range: -40 °C to 125 °C
- Available in TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4 mm) packages
- Pinout compatibility with standard adjustable voltage regulators
- Automotive grade available for adjustable output voltages in TO-220 and DPAK packages
Applications
The LD1086DTTRY is suitable for a variety of applications requiring stable and efficient voltage regulation. These include:
- Automotive systems: Due to its automotive grade and wide operating temperature range, it is ideal for use in automotive electronics.
- Industrial control systems: The regulator's high current capability and thermal protection make it suitable for industrial control and automation systems.
- Consumer electronics: It can be used in various consumer electronic devices that require reliable and efficient power supply.
- Medical devices: The tight output voltage tolerance and low dropout voltage make it a good choice for medical devices requiring stable power supply.
Q & A
- What is the maximum output current of the LD1086DTTRY?
The LD1086DTTRY can provide up to 1.5 A of output current.
- What are the available output voltage options for the LD1086DTTRY?
The available output voltage options are 1.8 V, 3.3 V, and 5 V.
- What is the typical dropout voltage of the LD1086DTTRY at 1.5 A output current?
The typical dropout voltage is 1.3 V at 1.5 A output current.
- What is the operating temperature range of the LD1086DTTRY?
The operating temperature range is -40 °C to 125 °C.
- What packages are available for the LD1086DTTRY?
The regulator is available in TO-220, D²PAK, D²PAK/A, DPAK, and DFN8 (4x4 mm) packages.
- Is the LD1086DTTRY compatible with older 3-terminal adjustable 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 LD1086DTTRY have internal protection features?
Yes, it has internal power and thermal limit protection.
- Is the LD1086DTTRY suitable for automotive applications?
Yes, it is available as an automotive grade for adjustable output voltages in TO-220 and DPAK packages.
- What is the output voltage tolerance of the LD1086DTTRY?
The output voltage tolerance is ± 1% at 25 °C and ± 2% in the full temperature range.
