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Product Detailed Parameters
- Description：IC REG LINEAR 5V 800MA 8-WSON
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- 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：Surface Mount
- Package / Case：8-WDFN Exposed Pad
- Supplier Device Package：8-WSON (4x4)
- Grade：-
- Qualification：-
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Overview
The LM1117LD-5.0/NOPB is a fixed-output low-dropout linear regulator manufactured by Texas Instruments, providing a stable 5 V output with a maximum load current of 800 mA. It operates within a junction temperature range of 0°C to 125°C and features a typical dropout voltage of 1.2 V at full load. The device incorporates internal current limiting and thermal shutdown protection mechanisms. It utilizes a Zener-trimmed bandgap reference to ensure output voltage accuracy within ±1%. A minimum 10-µF tantalum capacitor is required at the output for stability.
Feature Summary
- Integrated current limiting and thermal shutdown protection
- Zener-trimmed bandgap reference for high voltage accuracy
- Low dropout performance suitable for efficient power conversion
Applications
- Post regulator for switching DC-DC converters
- Battery chargers
- Portable instrumentation
Procurement Notes
Verify that the specific suffix LD corresponds to the WSON package variant when sourcing. Confirm RoHS compliance status as indicated in official documentation. Ensure the ordering part number matches the exact pin configuration and thermal characteristics required for the target PCB layout design.
Selection Notes
Select this component for applications requiring a fixed 5 V rail from higher input voltages. Verify that the input-to-output differential remains above the specified dropout voltage across all operating temperatures. Ensure the output capacitor meets the minimum capacitance and ESR requirements to maintain loop stability during transient load changes.
Part Context
This device belongs to the LM1117 family of low-dropout regulators. The LM1117 series offers both adjustable and fixed voltage options in various packages including SOT-223, TO-220, and WSON. The LM1117LD variant specifically denotes the WSON package configuration within this product line.
FAQ
What type of output capacitor is required for stability?
A minimum 10-µF tantalum capacitor is required at the output to improve transient response and ensure stability.
Does the LM1117LD-5.0/NOPB include overcurrent protection?
Yes, the device includes internal current limiting and thermal shutdown protection to safeguard against overload conditions.
