LP2981A
LP2981A is 100-mA Ultra-Low Dropout Regulators manufactured by Texas Instruments.
- Part of the LP2981-28 comparator family.
- Part of the LP2981-28 comparator family.
Features
- Input Voltage (VIN) Range:
- Legacy chip: 2.2 V to 16 V
- New chip: 2.5 V to 16 V
- Output Voltage (VOUT) Range: 1.2 V to 5.0 V
- Output Voltage (VOUT) Accuracy:
- ±0.75% for A-Grade legacy chip
- ±1.25% for standard-grade legacy chip
- ±0.5% for new chip (A grade and standard grade)
- Output Voltage (VOUT) accuracy over load, and temperature: ±1% (new chip)
- Output current: Up to 100 m A
- Low IQ (new chip): 69 μA at ILOAD = 0 m A
- Low IQ (new chip): 620 μA at ILOAD = 100 m A
- Shutdown current over temperature:
- < 1 μA (legacy chip)
- ≤ 1.75 μA (new chip)
- Output current limiting and thermal protection
- Stable with 2.2-µF ceramic capacitors (new chip)
- High PSRR (new chip):
- 75 d B at 1 k Hz, 45 d B at 1 MHz
- Operating junction temperature:
- 40°C to 125°C
- Package: 5-pin SOT-23 (DBV)
2 Applications
- Electricity meters
- Micro inverters
- Server PSU (12-V output)
- Residential breakers
- Single & multiaxis servo drives
VOUT
CIN GND
LP2981
ON/ OFF
COUT GND
Typical Application...
