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Product Detailed Parameters
- Description：IC REG LINEAR 2.85V 1.5A TO220-3
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：27V
- Voltage - Output (Min/Fixed)：2.85V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.5V @ 1.5A
- Current - Output：1.5A
- Current - Quiescent (Iq)：5 mA
- Current - Supply (Max)：10 mA
- PSRR：72dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：0°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220-3
- Grade：-
- Qualification：-
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Overview
The LM1086CT-2.85/NOPB is a positive low-dropout linear regulator manufactured by Texas Instruments, delivering a fixed 2.85V output at up to 1.5A. It operates within an input voltage range of 2.6V to 30V and features a typical dropout voltage of 1.3V at full load. The device utilizes a TO-220-3 through-hole package with dimensions of 10.16mm length, 4.7mm width, and 8.89mm height. It supports an operating temperature range from -40°C to +125°C and includes internal current limiting and thermal shutdown protection.
Feature Summary
- Fixed 2.85V output eliminates external resistor requirements for standard voltage rails
- Integrated thermal shutdown and current limit protection ensures operational safety under overload conditions
- Low dropout characteristic allows efficient regulation with minimal input-to-output voltage difference
Applications
- General-purpose power supply regulation in industrial equipment
- Biasing circuits requiring stable 2.85V reference voltages
- Embedded systems power distribution networks
Procurement Notes
Verify the specific suffix '2.85' confirms the fixed 2.85V output variant, distinct from adjustable or other fixed voltage versions. Confirm the 'CT' designation corresponds to the TO-220-3 through-hole package. Ensure NOPB indicates lead-free and halogen-free compliance. Cross-reference manufacturer datasheets for exact pinout and thermal resistance specifications before integration.
Selection Notes
Select this component when a stable 2.85V rail is required with high current capability up to 1.5A. The TO-220-3 package suits applications needing robust thermal dissipation via heatsinking. Consider the minimum input voltage requirement relative to the dropout voltage to maintain regulation. Evaluate thermal performance based on ambient temperature and load current to ensure operation within the specified junction temperature limits.
Part Context
This part belongs to the LM1086 family of 1.5A low-dropout positive regulators. The family offers both adjustable and fixed output options in various packages including TO-220, D2PAK, and WSON. The LM1086 series is designed for applications requiring efficient linear regulation with built-in protection features, serving as a reliable alternative to traditional three-terminal adjustable regulators.
Replacement Considerations
LM1086CT-ADJ/NOPB (requires external resistors for 2.85V)
FAQ
Does the LM1086CT-2.85/NOPB require external feedback resistors?
No, the fixed output version integrates the necessary feedback network internally, unlike the adjustable variant which requires two external resistors.
What is the maximum input voltage for this regulator?
The maximum input voltage is 30V, allowing it to regulate from higher voltage sources down to the fixed 2.85V output.
