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LM1117IDTX-5.0/NOPB
Texas Instruments
IC REG LINEAR 5V 800MA TO252-3
19855 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 800mA TO-252-3
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5.0 / 5.0
- (178 Ratings)
LM1117IDTX-5.0/NOPB
Product Overview
1364048
DiGi Electronics Part Number
LM1117IDTX-5.0/NOPB-DGManufacturer
Texas Instruments
LM1117IDTX-5.0/NOPB
Description
IC REG LINEAR 5V 800MA TO252-3Inventory
19855 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 800mA TO-252-3
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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LM1117IDTX-5.0/NOPB Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
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
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
TO-252-3, DPAK (2 Leads + Tab), SC-63
Supplier Device Package
TO-252-3
Base Product Number
LM1117
Datasheet & Documents
HTML Datasheet
LM1117IDTX-5.0/NOPB-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
LM1117IDTX50NOPB
LM1117IDTX-5.0/NOPB-DG
-LM1117IDTX-5.0/NOPBCT-DG
TEXTISLM1117IDTX-5.0/NOPB
LM1117IDTX-5.0/NOPBTR
LM1117IDTX-5.0/NOPBDKR
LM1117IDTX-5.0/NOPBCT
2156-LM1117IDTX-5.0/NOPB
Standard Package
2,500
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Der Kundenkontakt ist stets freundlich und hilfsbereit. Supportleistungen erfolgen schnell und unkompliziert.
de desembre 02, 2025
Ich kann den Service nur empfehlen, da er schnell, freundlich und kompetent ist.
de desembre 02, 2025
I am always confident shopping here because of their reasonable prices and caring support.
de desembre 02, 2025
DiGi Electronics’ diverse products accommodate all my projects and ideas.
de desembre 02, 2025
The affordability combined with high-quality packaging makes DiGi Electronics stand out.
de desembre 02, 2025
Customer support was available via multiple channels, making help accessible.
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Frequently Asked Questions (FAQ)
What are the thermal design considerations when using the LM1117IDTX-5.0/NOPB in a high-ambient-temperature environment above 85°C?
When operating the LM1117IDTX-5.0/NOPB in environments above 85°C, thermal management becomes critical due to its 1.2V dropout at 800mA and TO-252-3 package thermal resistance. Calculate power dissipation as (Vin - 5V) × load current, and ensure junction temperature stays below 125°C. Use a sufficiently large PCB copper pour connected to the tab for heatsinking—typically 1–2 in² of 2 oz copper with thermal vias. In compact or sealed enclosures, consider derating output current or switching to a switching regulator if Vin exceeds 7V to reduce waste heat and avoid thermal shutdown during sustained loads.
Can the LM1117IDTX-5.0/NOPB be used as a direct drop-in replacement for the AMS1117-5.0 in existing designs, and what are the key risks?
While the LM1117IDTX-5.0/NOPB is functionally similar to the AMS1117-5.0, it is not a guaranteed drop-in replacement without review. Key risks include differences in transient response and line regulation under fast load steps, as well as tighter tolerance on internal feedback in the LM1117, which may expose marginal power sequencing or startup issues in legacy designs. Additionally, TI's LM1117 typically has better PSRR (75dB at 120Hz) and more robust over-temperature protection than some AMS1117 variants. Always verify startup behavior with decoupling used and confirm thermal layout sufficiency, especially if the original design operated near thermal limits.
How does input voltage noise affect the LM1117IDTX-5.0/NOPB output, and is additional filtering needed for sensitive analog loads like ADC references?
The LM1117IDTX-5.0/NOPB provides 75dB PSRR at 120Hz, which attenuates low-frequency ripple well but diminishes above 10kHz, making it less effective against high-frequency switching noise from DC-DC converters. For sensitive analog loads such as precision ADC voltage references, add a small LC or RC filter (e.g., 10Ω resistor + 10μF ceramic) at the output along with 10μF ceramic input and output capacitors near the device. Also, ensure layout minimizes noise coupling—avoid running noisy traces near the regulator and use a clean ground plane. These steps reduce output noise and maintain accuracy in mixed-signal applications.
What are the risks of using the LM1117IDTX-5.0/NOPB with a 15V input when operating near 800mA output current, and how can I mitigate them?
Using the LM1117IDTX-5.0/NOPB at 15V input and 800mA output results in approximately 8W of power dissipation (10V × 0.8A), which far exceeds safe operating levels for the TO-252-3 package without exceptional cooling. The device will trigger thermal shutdown or suffer early failure. To mitigate, either reduce the input voltage to 7–8V using a pre-regulator stage or switch to a buck switching regulator for efficiency. If linearity is required, use forced-air cooling or derate the load to ≤200mA with a large heatsink. Always perform thermal validation under worst-case conditions to avoid in-field reliability issues.
What PCB layout practices should I follow to ensure stability and reliability of the LM1117IDTX-5.0/NOPB in a high-reliability industrial application?
For reliable operation of the LM1117IDTX-5.0/NOPB in industrial environments, place a minimum 10μF low-ESR ceramic capacitor on both input and output, as close as possible to the device pins with short, wide traces. Connect the tab (pin 2) directly to a large ground plane using multiple vias to reduce thermal resistance. Avoid routing high-speed signals under the device. Use a solid power and ground plane pair to minimize impedance and improve noise rejection. Additionally, separate analog and digital ground planes but tie them at a single point near the regulator ground to prevent ground loops. Proper layout improves thermal performance, reduces EMI sensitivity, and ensures long-term reliability in harsh conditions.
Quality Assurance (QC)
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LM1117IDTX-5.0/NOPB CAD Models
Texas Instruments LM1117IDTX-5.0/NOPB PCB symbols & footprints
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