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Product Detailed Parameters
- Description：IC REG LINEAR 5V 800MA TO220-3
- Series：-
- Mfr：National Semiconductor
- Package：Bulk
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：5V
- 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：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220-3
- Grade：-
- Qualification：-
Download product information
Overview
The LM1117T-5.0/NOPB is a fixed-output low-dropout linear regulator manufactured by Texas Instruments, which acquired National Semiconductor. It provides a fixed 5V output with a maximum load current of 800mA. The device features a dropout voltage of 1.2V at full load and operates within an input voltage range up to 15V. It is housed in a TO-220-3 through-hole package and supports an operating temperature range from -40°C to +125°C. Internal protections include thermal shutdown and current limiting.
Feature Summary
- Fixed 5V output voltage with ±1% initial accuracy
- Low dropout performance of 1.2V at 800mA load
- Integrated thermal shutdown and current limit protection
Applications
- General-purpose power supply regulation
- Battery-powered systems requiring efficient voltage step-down
- Pre-regulator for switching regulators
Procurement Notes
Verify the manufacturer designation on official datasheets, as Texas Instruments now produces this component following its acquisition of National Semiconductor. Confirm the specific suffix 'NOPB' indicates lead-free and RoHS compliance. Ensure the TO-220-3 package matches the required mounting style for the target application design.
Selection Notes
Select this component when a stable 5V rail is needed with moderate current demands up to 800mA. It is suitable for applications where input voltage remains close to the output level, leveraging its low dropout characteristic. Consider thermal management requirements based on the power dissipation calculated from the voltage difference between input and output multiplied by the load current.
Part Context
This part belongs to the LM1117 series of low-dropout linear regulators. The series offers both fixed and adjustable output versions in various packages including SOT-223, TO-252, and TO-220. The LM1117T variant specifically denotes the TO-220 through-hole package option, providing robust thermal performance compared to surface-mount alternatives.
Replacement Considerations
LM1117DT-5.0/NOPB (Surface Mount DPAK/TO-252)
FAQ
What type of output capacitor is required for stability?
A minimum 10µF tantalum capacitor or a low-ESR electrolytic capacitor is required at the output. If using ceramic capacitors, a series resistor may be necessary to ensure stability.
Is this component adjustable?
No, the LM1117T-5.0/NOPB is a fixed-output regulator providing a constant 5V. Adjustable versions are available with the suffix '-ADJ'.
