The Analog Devices Low Dropout (LDO) Linear Regulators offer fast transient response, excellent line and load regulation, and they have a wide input voltage range.
Feature
- Fixed (ADP322) and adjustable output (ADP323) options
- Bias voltage range (VBIAS): 2.5 V to 5.5 V
- LDO input voltage range (VIN1/VIN2, VIN3): 1.8 V to 5.5 V
- Three 200 mA low dropout voltage regulators (LDOs)
- 16-lead, 3 mm × 3 mm LFCSP
- Initial accuracy: ±1%
- Stable with 1 µF ceramic output capacitors
- No noise bypass capacitor required
- 3 independent logic controlled enables
- Overcurrent and thermal protection
- Key specifications
- High PSRR
- 76 dB PSRR up to 1 kHz
- 70 dB PSRR at 10 kHz
- 60 dB PSRR at 100 kHz
- 40 dB PSRR at 1 MHz
- Low output noise
- 24 µV rms typical output noise at VOUT = 1.2 V
- 43 µV rms typical output noise at VOUT = 2.8 V
- High PSRR
- Excellent transient response
- Low dropout voltage: 110 mV at 200 mA load
- 85 µA typical ground current at no load, all LDOs enabled
- 100 µs fast turn on circuit
- Guaranteed 200 mA output current per regulator
- −40°C to +125°C junction temperature
Applications
- Mobile phones
- Digital cameras and audio devices
- Portable and battery-powered equipment
- Portable medical devices
- Post dc-to-dc regulation
(Picture: Pinout)
