LP2981AIM5X-5.0

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LP2981AIM5X-5.0

IC REG LINEAR 5V 100MA SOT23-5

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規格

Package Tape & Reel (TR)
ProductStatus Obsolete
OutputConfiguration Positive
OutputType Fixed
NumberofRegulators 1
Voltage-Input(Max) 16V
Voltage-Output(Min/Fixed) 5V
VoltageDropout(Max) 0.37V @ 100mA
Current-Output 100mA
Current-Quiescent(Iq) 95 µA
Current-Supply(Max) 1.7 mA
PSRR 63dB (1kHz)
ControlFeatures Enable
ProtectionFeatures Over Current, Over Temperature, Short Circuit
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case SC-74A, SOT-753

概述

Description

LP2981AIM5X-5.0 is a fixed-output low-dropout regulator (LDO). It provides a regulated 5.0 V rail from a higher input in a compact 5-pin SOT-23 package (AIM5X). It’s designed for small, battery-powered or space-constrained applications and typically supports up to about 150 mA of output current with low quiescent current and good line/load regulation. It includes basic protection features such as thermal shutdown and current limiting. Common uses include powering microcontrollers, sensors, and other ICs in portable devices. For exact values (input voltage range, dropout at full load, quiescent current, accuracy), refer to the LP2981AIM5X-5.0 datasheet, as specifications vary by revision and packaging.

Features

Here are the key features of LP2981AIM5X-5.0:
- Fixed 5.0 V output
- Ultra-low quiescent current (typical in tens of µA)
- Low dropout voltage (suitable for battery apps)
- Output current up to about 100 mA
- Input supply range roughly 2.7–6.0 V
- Requires output capacitor for stability (typical min 4.7 µF; ESR is specified)
- Good line and load regulation
- Internal protection: current limiting and thermal shutdown
- Small 5-pin package (AIM5X; SOT-23-5/MSOP-5), RoHS compliant
- Operating temperature range: -40 °C to +125 °C
Note: Exact numbers can vary by lot and packaging; consult the official datasheet for precise specs.

Package

LP2981AIM5X-5.0 is in a SOT-23-5 (SC-70-5) 5‑pin package.

Pinout

- Pin count: 5 pins (SOT-23-5).
- Function: Fixed-output 5.0 V low-dropout regulator (LDO) with an enable pin. VIN supplies input, VOUT provides regulated 5.0 V, GND is the return, EN enables/disables the regulator.

Manufacturer

Manufacturer: STMicroelectronics.
What kind of company: STMicroelectronics is a global (multinational) semiconductor company that designs and manufactures integrated circuits and discrete semiconductors for automotive, industrial, consumer, and communications markets.

Application

Common application areas for LP2981AIM5X-5.0:
- 5V fixed-output LDO for portable and battery-powered electronics
- Power supply rail for microcontrollers and digital ICs
- IoT devices and wearables
- RF modules, GPS receivers, sensors, and op-amp circuits
- USB peripherals and other embedded systems needing a compact 5V regulator

Equivalent

Equivalent 5.0 V fixed LDOs (similar current; cross-reference) include:
- Microchip MCP1700-5.0
- TI TLV70050
- TI TLV1117-5.0 (AMS1117-5.0 family)
- ST LD1117V50 (and AMS1117 variants)
- Torex XC6206P502MR (SOT-23)
Note: pinouts and dropout vary; verify datasheets and package compatibility before replacement.

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