Features for the LP2985A
- VIN range (new chip): 2.5V to 16V
- VOUT range (new chip):
- 1.2V to 5.0V (fixed, 100mV steps)
- VOUT accuracy:
- ±1% for A-grade (legacy chip)
- ±1.5% for standard-grade (legacy chip)
- ±0.5% (new chip)
- ±1% output accuracy over load and temperature (new chip)
- Output current: Up to 150mA
- Low IQ (new chip): 71µA at ILOAD = 0mA
- Low IQ (new chip): 750µA at ILOAD = 150mA
- Shutdown current:
- 0.01µA (typ, legacy chip)
- 1.12µA (typ, new chip)
- Low noise: 30µVRMS with 10nF bypass capacitor
- Output current limiting and thermal protection
- Stable with 2.2µF ceramic capacitors (new chip)
- High PSRR: 70dB at 1kHz, 40dB at 1MHz (new chip)
- Operating junction temperature: –40°C to +125°C
- Package: 5-pin SOT-23 (DBV)
Description for the LP2985A
The LP2985 is a fixed-output, wide-input, low-noise, low-dropout voltage regulator supporting an input voltage range from 2.5V to 16V (for new chip) and up to 150mA of load current. The LP2985 supports an output range of 1.2V to 5.0V (for new chip).
Additionally, the LP2985 (new chip) has a ±1% output accuracy across load, and temperature that can meet the needs of low-voltage microcontrollers (MCUs) and processors.
Low output noise of 30µVRMS (with 10nF bypass capacitors) and wide bandwidth PSRR performance of greater than 70dB at 1kHz and 40dB at 1MHz help attenuate the switching frequency of an upstream DC/DC converter and minimize post regulator filtering.
The new chip provides internal soft-start mechanism to reduce inrush current during start up, thus minimizing input capacitance. Standard protection features, such as overcurrent and overtemperature protection, are also included.
The LP2985 is available in a 5-pin 2.9mm × 2.8mm SOT-23 (DBV) package.