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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：-
Download product information
Overview
The LM1117LDX-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 utilizes an 8-pin WSON package (DCY) measuring 4.00 mm x 4.00 mm. The device features a dropout voltage of 1.2 V at full load and maintains output accuracy within ±1%. Operating conditions include a junction temperature range from 0°C to 125°C, a maximum input voltage of 15 V, and a typical ripple rejection ratio of 75 dB.
Feature Summary
- Integrated Zener-trimmed bandgap reference ensures precise output voltage regulation.
- Built-in current limiting and thermal shutdown mechanisms protect against overload and overheating.
- Space-saving surface-mount packaging designed for high-density circuit board layouts.
Applications
- Post-regulator for switching DC-DC converters
- Battery charger circuits
- Portable instrumentation power supplies
Procurement Notes
Verify the specific suffix 'LDX' against the manufacturer's official orderable addendum to confirm active status and exact package dimensions. Ensure the procurement documentation explicitly references the WSON-8 form factor and confirms compliance with RoHS standards as indicated by the NOPB designation.
Selection Notes
Select this component when a compact footprint is required alongside standard 5 V logic supply needs. Confirm that the application can accommodate the minimum 10 µF tantalum output capacitor requirement for stability. Evaluate thermal dissipation capabilities based on the WSON package's thermal resistance characteristics relative to the PCB layout.
Part Context
This part belongs to the LM1117 family of low-dropout regulators, which offers both adjustable and fixed voltage options. While other variants utilize TO-220 or SOT-223 packages, the LDX suffix specifically denotes the 8-pin WSON configuration, providing a significantly smaller body size compared to traditional leaded packages while maintaining identical electrical performance specifications.
Replacement Considerations
LM1117IDTX-ADJ/NOPB
FAQ
What type of output capacitor is required for stability?
A minimum 10 µF tantalum capacitor is required at the output to ensure transient response and stability.
How does the WSON package affect thermal management?
The WSON package relies heavily on PCB copper area for heat dissipation, requiring careful layout consideration to manage junction temperatures under load.
