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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 1.5A D2PAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：30V
- Voltage - Output (Min/Fixed)：1.25V
- Voltage - Output (Max)：28.5V
- Voltage Dropout (Max)：1.5V @ 1.5A
- Current - Output：1.5A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：88dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Supplier Device Package：D2PAK
- Grade：-
- Qualification：-
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Overview
The LD1086D2TTR is a positive adjustable low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides an output current of up to 1.5 A with a maximum input voltage of 30 V and a minimum adjustable output voltage of 1.25 V. The device features a typical dropout voltage of 1.3 V at full load, with a maximum of 1.5 V. It operates within a temperature range of -40 °C to +125 °C and utilizes a D2PAK-3 surface-mount package.
Feature Summary
- Adjustable output voltage configuration compatible with standard three-terminal regulators
- High efficiency design where quiescent current flows into the load rather than being wasted
- Integrated protection against overcurrent and thermal overload conditions
Applications
- Battery-powered systems requiring efficient power management
- Post-regulation stages for switching power supplies
- Local voltage regulation in embedded control circuits
Procurement Notes
Verify the specific suffix 'D2' indicates the D2PAK package variant when sourcing. Confirm the 'TR' designation corresponds to tape-and-reel packaging requirements for automated assembly lines. Ensure compatibility with RoHS standards if environmental compliance is mandatory for the target application.
Selection Notes
Select this component when a high-current adjustable LDO is required in a surface-mount form factor. It serves as a direct pin-compatible replacement for older TO-220 adjustable regulators while offering improved dropout performance. Consider the thermal dissipation capabilities of the D2PAK package relative to the expected power loss under maximum load conditions.
Part Context
This part belongs to the LD1086 series of low-dropout regulators designed for applications demanding stable voltage regulation with minimal heat generation. The series includes both fixed and adjustable variants across multiple packages, including TO-220 and DFN, providing flexibility for various power management architectures.
Replacement Considerations
LD1086DTTR (Adjustable version in identical D2PAK package)
FAQ
How does the quiescent current behavior differ from PNP regulators?
Unlike PNP regulators that waste quiescent current, the LD1086 directs its quiescent current into the load, thereby increasing overall system efficiency.
What is the minimum capacitance required for stability?
A minimum capacitor of 10 μF is required at the output to ensure stable operation of the regulator.
