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LP3853ES-2.5
Texas Instruments
IC REG LIN 2.5V 3A DDPAK/TO263-5
1270 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 3A TO-263 (DDPAK-5)
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Minimum 1
Minimum 1
5.0 / 5.0
- (242 Ratings)
LP3853ES-2.5
Product Overview
1319666
DiGi Electronics Part Number
LP3853ES-2.5-DGManufacturer
Texas Instruments
LP3853ES-2.5
Description
IC REG LIN 2.5V 3A DDPAK/TO263-5Inventory
1270 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 3A TO-263 (DDPAK-5)
Quantity
Minimum 1
Minimum 1
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LP3853ES-2.5 Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Packaging
-
Series
-
Product Status
Last Time Buy
Output Configuration
Positive
Output Type
Fixed
Number of Regulators
1
Voltage - Input (Max)
7V
Voltage - Output (Min/Fixed)
2.5V
Voltage - Output (Max)
-
Voltage Dropout (Max)
0.6V @ 3A
Current - Output
3A
Current - Quiescent (Iq)
4 mA
Current - Supply (Max)
10 mA
PSRR
73dB ~ 57dB (120Hz)
Control Features
Enable
Protection Features
Over Current, Over Temperature, Short Circuit
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package
TO-263 (DDPAK-5)
Base Product Number
LP3853
Datasheet & Documents
HTML Datasheet
LP3853ES-2.5-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Affected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
2156-LP3853ES-2.5
TEXTISLP3853ES-2.5
Standard Package
45
Alternative Parts
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MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Les délais de livraison sont respectés grâce à leur logistique soignée et efficace.
de desembre 02, 2025
DiGi Electronics bietet nicht nur günstige Preise, sondern auch einen außergewöhnlich guten Service.
de desembre 02, 2025
Efficient shipping process and quick responses from customer service made this a great purchase experience.
de desembre 02, 2025
I appreciate the attention to detail in DiGi Electronics' products, ensuring optimal performance.
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Frequently Asked Questions (FAQ)
When designing with the Texas Instruments LP3853ES-2.5, what are the primary thermal management considerations and potential risks if not adequately addressed, especially when operating near its 3A output current limit?
The LP3853ES-2.5 is rated for 3A, but its TO-263 (DDPAK-5) package requires careful thermal design to prevent overheating. The 0.6V dropout at 3A, combined with the 3A output current, results in a power dissipation of at least 1.8W (0.6V * 3A). Without adequate heatsinking (e.g., sufficient PCB copper pour area connected to the tab, or an external heatsink), the junction temperature can quickly exceed the 125°C operating limit, leading to thermal shutdown or premature component failure. Consider using a larger copper pour on both sides of the PCB and ensure good thermal vias to dissipate heat effectively. For continuous operation at higher loads, thermal simulation is highly recommended to predict junction temperature under worst-case conditions.
Given that the LP3853ES-2.5 is listed as 'Last Time Buy,' what are the critical steps an engineer should take to mitigate supply chain risks and ensure long-term product availability, especially for designs with extended lifecycles?
A 'Last Time Buy' (LTB) status for the LP3853ES-2.5 necessitates immediate action. Engineers should proactively identify and qualify suitable, currently available substitute parts from the provided list (e.g., LP3876ES-2.5/NOPB, LP3966ES-2.5/NOPB). This involves verifying that the substitutes meet all electrical requirements, including transient response, PSRR, and quiescent current, and critically, that they can be integrated without significant board redesign. It's prudent to procure a sufficient quantity of the LP3853ES-2.5 to cover the immediate needs while simultaneously completing the qualification and design-in of the replacement part to ensure uninterrupted production.
How does the 73dB ~ 57dB (120Hz) PSRR specification of the LP3853ES-2.5 translate into practical benefits for sensitive analog circuits, and what common input voltage noise sources could this regulator effectively suppress?
The LP3853ES-2.5's good Power Supply Rejection Ratio (PSRR) is crucial for filtering noise from the input power supply that could otherwise corrupt sensitive analog signals. For instance, if the input voltage source (e.g., a switching converter) exhibits ripple or noise at 120Hz, the LP3853ES-2.5 can attenuate this noise significantly (up to 73dB). This makes it an excellent choice for powering analog-to-digital converters (ADCs), operational amplifiers (op-amps) used in precision measurement, or RF circuitry where ripple on the power rail can lead to distortion or reduced signal-to-noise ratio. When selecting this regulator, ensure the dominant noise frequencies of your input source are within the range where the LP3853ES-2.5 offers the best PSRR.
Considering the LP3853ES-2.5's 0.6V maximum dropout voltage at 3A, what is the minimum input voltage required for stable 2.5V output in a real-world application, and what are the potential consequences of operating too close to this limit?
To reliably achieve a 2.5V output from the LP3853ES-2.5, the input voltage must be at least the sum of the desired output voltage and the maximum dropout voltage, plus any additional margin for component tolerances and temperature variations. Therefore, a minimum input of approximately 2.5V + 0.6V = 3.1V is needed at full 3A load. Operating the LP3853ES-2.5 too close to this minimum input voltage, especially with varying load conditions or a less stable input supply, risks the output voltage dropping below the required 2.5V. This can lead to system malfunction, data corruption in digital systems, or performance degradation in analog circuits that rely on a stable 2.5V rail.
If replacing a competitor's linear regulator, such as the MIC39301-2.5WU-TR, with the Texas Instruments LP3853ES-2.5, what are the key performance differences and integration challenges beyond pin compatibility that an engineer must carefully evaluate?
While pin compatibility might exist between the LP3853ES-2.5 and a part like the MIC39301-2.5WU-TR, crucial performance differences can impact design. The LP3853ES-2.5 offers a higher output current capability (3A vs. typically 1A for some MIC39301 variants), which might necessitate a re-evaluation of thermal management if the application was previously pushing the MIC39301 to its limits. Furthermore, transient response characteristics, quiescent current (LP3853ES-2.5 has 4mA Iq), and the specific protection features (Over Current, Over Temperature, Short Circuit for LP3853ES-2.5) might differ, impacting system robustness and power budgeting. Thoroughly compare the application's transient load requirements against the transient response curves of both parts, and verify that the current and thermal handling capabilities of the LP3853ES-2.5 are a sufficient upgrade or equivalent for the specific application's demands.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
LP3853ES-2.5 CAD Models
Texas Instruments LP3853ES-2.5 PCB symbols & footprints
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