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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1.5A TO263
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：27V
- Voltage - Output (Min/Fixed)：3.3V
- 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：Surface Mount
- Package / Case：TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Supplier Device Package：TO-263 (DDPAK-3)
- Grade：-
- Qualification：-
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Overview
The LM1086CSX-3.3/NOPB is a fixed positive low-dropout linear regulator manufactured by Texas Instruments, delivering a stable 3.3 V output at up to 1.5 A. Housed in a surface-mount D2PAK-3 (TO-263-3) package, it operates within an extended temperature range of -40 °C to +125 °C. The device features a typical dropout voltage of 1.3 V and supports input voltages up to 27 V. It incorporates internal thermal overload and current-limiting protection mechanisms to ensure reliable operation under varying load conditions.
Feature Summary
- Provides a fixed 3.3 V regulated output suitable for standard logic and analog circuits
- Integrates comprehensive protection against thermal overload and excessive output current
- Utilizes a robust TO-263-3 surface-mount package designed for efficient heat dissipation
Applications
- Point-of-load regulation in embedded computing systems
- Power conditioning for microcontroller-based digital circuits
- Bias voltage generation for analog signal processing stages
Procurement Notes
Verify the specific suffix configuration against official Texas Instruments documentation to confirm pinout compatibility and electrical tolerances. Ensure that the procurement source provides valid traceability for the component's manufacturing origin. Cross-reference the datasheet revision history to validate performance specifications prior to integration into final designs.
Selection Notes
Select this component when a fixed 3.3 V rail is required with high current capability in a compact surface-mount form factor. Evaluate the thermal resistance characteristics of the D2PAK-3 package relative to the expected ambient operating environment. Confirm that the input voltage range remains within the specified limits to maintain adequate headroom for proper regulation.
Part Context
This part belongs to the LM1086 family of 1.5 A low-dropout regulators produced by Texas Instruments. The series includes both adjustable and fixed-output variants available in through-hole and surface-mount packages. The CSX designation indicates a specific surface-mount variant optimized for automated assembly processes.
Replacement Considerations
LM1086CSX-3.3/NOPB serves as the primary equivalent for the discontinued LM1086CSX-3.3. Verify pinout alignment before substituting with other LDO families.
