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Product Detailed Parameters
- Description：IC REG LIN 2.85V 800MA TO252-3
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：2.85V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.2V @ 800mA
- Current - Output：800mA
- Current - Quiescent (Iq)：5 mA
- Current - Supply (Max)：10 mA
- PSRR：75dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：0°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：TO-252-3
- Grade：-
- Qualification：-
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Overview
The LM1117DT-2.85/NOPB is a positive low-dropout linear regulator from Texas Instruments, delivering an output current of up to 800 mA. It provides a fixed output voltage of 2.85 V with a maximum dropout voltage of 1.3 V at full load. The device operates within a junction temperature range of 0°C to 125°C and features line regulation of 0.2% maximum and load regulation of 0.4% maximum. It incorporates internal current limiting and thermal shutdown protection.
Feature Summary
- Integrated Zener-trimmed bandgap reference ensures high output voltage accuracy.
- Includes built-in current limiting and thermal shutdown for robust operation under fault conditions.
- Requires only minimal external components, typically two resistors for adjustable versions or none for fixed outputs.
Applications
- Post-regulator for switching DC-DC converters
- High-efficiency linear regulators
- Battery chargers
- Portable instrumentation power supplies
Procurement Notes
Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as per the manufacturer's latest documentation. Confirm that the 'DT' package designation corresponds to the required TO-252 form factor for your PCB layout. Ensure the operating environment remains within the specified 0°C to 125°C junction temperature range to maintain guaranteed electrical characteristics.
Selection Notes
Select this component when a stable 2.85 V rail is required with moderate current demands up to 800 mA. Consider the TO-252 package for surface-mount applications requiring efficient heat dissipation through the tab. Evaluate the input-to-output voltage differential to ensure it exceeds the dropout voltage across all expected load and temperature conditions.
Part Context
This part belongs to the LM1117 family of low-dropout regulators, designed as a drop-in replacement for the industry-standard LM317 in many applications. The LM1117 series offers both adjustable and fixed voltage options, providing versatility for various power management needs in consumer and industrial electronics.
Replacement Considerations
The LM1117DT-2.85/NOPB replaced the LM1117-N-2.85 option, which has been removed from production. Verify compatibility with existing circuit designs if substituting older inventory.
