仕様
| 属性 | 値 |
| Package / Case | Tape & Reel (TR) |
| Part Status | Obsolete |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 16V |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage Dropout (Max) | 0.37V @ 100mA |
| Current - Output | 100mA |
| Current - Quiescent (Iq) | 95 µA |
| Current - Supply (Max) | 1.7 mA |
| PSRR | 63dB (1kHz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
概要
Description
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.
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.
Equivalent
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.
- 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.
Features
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.
- 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.
Pinout
- 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.
- 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
Manufacturer: Texas Instruments (TI).
What kind of company: TI is an American multinational technology company that designs and manufactures semiconductors and integrated circuits.
What kind of company: TI is an American multinational technology company that designs and manufactures semiconductors and integrated circuits.
Application
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.)
- 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.)
Package
SOT-23-5 (SC-70-5) 5-pin package.
