LP3981ILD-3.3
- Mfr.Part #
- LP3981ILD-3.3
- Manufacturer
- National Semiconductor
- Package / Case
- 6-WDFN Exposed Pad
- Datasheet
- Download
- Description
- IC REG LINEAR FIXED POS LDO REG
- Stock
- 43,156
- In Stock :
- 43,156
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- Manufacturer :
- National Semiconductor
- Product Category :
- Voltage Regulators - Linear
- Power Dissipation :
- 2W
- Min Current Limit :
- 300mA
- Radiation Hardening :
- No
- Output Type :
- FIXED
- Width :
- 3mm
- Lead Free :
- Contains Lead
- Accuracy :
- 2 %
- Voltage Dropout (Max) :
- 0.2V @ 300mA
- Dropout Voltage1-Nom :
- 0.132V
- Dropout Voltage :
- 132mV
- Max Output Current :
- 300mA
- Current - Quiescent (Iq) :
- 120μA
- Package / Case :
- 6-WDFN Exposed Pad
- Packing Method :
- Tape and Reel
- Number of Pins :
- 6
- Control Features :
- Enable
- Current - Supply (Max) :
- 210μA
- Max Power Dissipation :
- 2W
- Voltage Tolerance-Max :
- 3%
- Operating Temperature :
- -40°C~125°C
- Quiescent Current :
- 70µA
- ECCN Code :
- EAR99
- Base Part Number :
- LP3981
- Height Seated (Max) :
- 0.8mm
- Output Voltage 1 :
- 3.3V
- Number of Regulators :
- 1
- Number of Terminations :
- 6
- Protection Features :
- Over Current, Over Temperature, Short Circuit
- JESD-609 Code :
- e0
- Voltage - Input (Max) :
- 6V
- Pbfree Code :
- No
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Output Voltage :
- 3.3V
- Length :
- 4mm
- Peak Reflow Temperature (Cel) :
- 235
- Number of Outputs :
- 1
- Terminal Finish :
- Tin/Lead (Sn/Pb)
- Terminal Position :
- Dual
- Min Input Voltage :
- 2.7V
- Mounting Type :
- Surface Mount
- Terminal Pitch :
- 0.8mm
- Output Configuration :
- Positive
- Packaging :
- Tape and Reel (TR)
- Output Voltage Accuracy :
- 2 %
- Number of Functions :
- 1
- Pin Count :
- 6
- Mount :
- Surface Mount
- PSRR :
- 50dB ~ 55dB (1kHz ~ 10kHz)
- RoHS Status :
- Non-RoHS Compliant
- Datasheets
- LP3981ILD-3.3

Voltage Regulators - Linear National Semiconductor LP3981ILD-3.3 Overview
The Voltage Regulators - Linear National Semiconductor LP3981ILD-3.3 is a high-performance, fixed output low-dropout (LDO) regulator, expertly designed for maintaining stable voltage levels in various electronic applications. This component guarantees a consistent 3.3V output with minimal input-output differential, making it an ideal choice for sensitive electronics requiring reliable power stability. The LP3981ILD-3.3 stands out for its robust thermal performance and low quiescent current, enhancing overall system efficiency and reducing power loss.
LP3981ILD-3.3 Features
This LDO regulator is optimized for performance in compact electronics, offering features such as a low dropout voltage, which ensures efficient operation even at low input voltages. It also features high accuracy in voltage regulation, thermal-overload protection, and a noise-reducing bypass capacitor input, which makes it suitable for noise-sensitive applications. The device's small package size facilitates integration into space-constrained designs without compromising performance.
LP3981ILD-3.3 Applications
- Consumer Electronics: Utilized in smartphones and tablets to provide stable power, ensuring efficient operation and prolonging device longevity.
- Portable Medical Devices: Essential in portable glucose monitors and blood pressure meters where precise voltage regulation is critical for accurate readings.
- Wearable Technology: Implements power supply solutions for smartwatches and fitness trackers, offering both miniaturization and energy efficiency.
- Telecommunications: Applied in routers and other communication devices to maintain stable operation and prevent data loss during voltage fluctuations.
- Automotive Applications: Used in vehicle-mounted GPS systems to ensure continuous and reliable power supply under varying engine conditions.
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