LP2981AIM5X-5.0

LP2981AIM5X-5.0 is a fixed 5.0 V low-dropout regulator (LDO) in a 5‑pin SOT‑23 (AIM5X) package. It provides a regulated 5 V output from a higher input with a small dropout and is suited for portable/battery-powered circuits.
Key features
- Fixed output: 5.0 V
- Output current: up to about 150 mA
- Low dropout (typical a few hundred millivolts depending on load)
- Enable (EN) pin to disable the regulator
- Built-in current limit and thermal/shutdown protections
- Low quiescent current (suitable for battery-powered apps)
Usage notes
- Requires input and output capacitors for stability (check datasheet for recommended values and ESR range).
- EN pin can be tied high to enable or driven to disable.
- Useful for powering microcontrollers and digital logic from a higher voltage rail.
For exact electrical limits (max input voltage, dropout at full load, EN behavior, capacitor specs), refer to the LP2981AIM5X-5.0 datasheet.

Equivalents (fixed 5.0 V LDOs with similar current; footprint/pinout may differ):
- MIC5205-5.0
- MCP1700-5.0
- AMS1117-5.0
- LD1117V50
- XC6206P502MR
Note: verify pinout, footprint, and dropout in datasheets; use TI’s cross-reference tool for exact substitutions.

Here are typical features of LP2981AIM5X-5.0 (fixed 5V LDO):
- Fixed output: 5.0 V
- Output current: up to about 100 mA
- Low dropout: very low Vout–Vin differential at load
- Very low quiescent current (µA range)
- Low output noise and good PSRR
- Stable with small output capacitors (ceramic, ≥1 µF) over ESR range
- Protection: short-circuit/overcurrent protection and thermal shutdown
- Compact package options (SOT-23 family)
- Industrial temperature range (e.g., -40°C to 125°C)
Note: exact figures (dropout, max load, quiescent current) vary by exact lot and packaging; consult the datasheet for precise numbers.

- Pin count: 5 pins (SOT-23-5 package)
- Function: Fixed 5.0 V low-dropout regulator (LDO) with an enable (EN) input and a bypass (BYP) pin for noise reduction; provides a regulated 5 V output from an input supply. Pin functions are typically VIN, GND, VOUT, EN, BYP.

Manufacturer: Texas Instruments (TI).
What kind of company: TI is an American multinational technology company that designs and manufactures semiconductors and integrated circuits.

LP2981AIM5X-5.0 is a fixed 5.0V LDO. Typical application areas include:
- Power supply for microcontrollers, digital ICs, and logic in portable devices
- Sensor front-ends (MEMS, ADCs/DACs) and instrumentation
- RF/IF and wireless modules (Bluetooth, GPS, WLAN)
- USB-powered peripherals and consumer electronics
- Battery-powered handheld equipment
- Low-noise analog/RF circuits requiring a stable 5V rail
(Note: suitable where a compact, low-quiescent, 5V regulator is needed.)

SOT-23-5 (SC-70-5) 5-pin package.