Analog Devices Inc. ADP7118 / ADP7142 CMOS LDO Linear Regulators

Analog Devices Inc. ADP7118 CMOS low dropout (LDO) linear regulator operates from 2.7V to 20V and provides up to 200mA of output current. This high input voltage LDO is ideal for the regulation of high-performance analog and mixed-signal circuits operating from 20V down to 1.2V rails. ADP7142 operates from 2.7V to 40V and provides up to 200mA of output current. This high input voltage LDO is ideal for the regulation of high-performance analog and mixed-signal circuits operating from 40V down to 1.2V rails. Using an advanced proprietary architecture, ADI ADP7118 and ADP7142 devices provide high power supply rejection, low noise, and achieve excellent line and load transient response with a small 2.2μF ceramic output capacitor. Regulator output noise is 11μV rms independent of the output voltage for the fixed options of 5V or less.

ADI ADP7118/ADP7142 evaluation boards are used to demonstrate the functionality of the ADP7118/ADP7142 series of linear regulators. Simple device measurements such as line and load regulation, dropout, and ground current can be demonstrated with just a single voltage source, a voltmeter, an ammeter, and load resistors.

Features

ADP7142
- Low Noise: 11μVRMS independent of fixed output voltage
- PSRR of 88dB @ 10KHz, 68dB @ 100KHz, 50dB @ 1MHz, V_OUT ≤5V, V_IN = 7V
- Input voltage range: 2.7V to 40V input voltage range
- Maximum output current: 200mA
- Initial accuracy: ±0.8%
- Accuracy over line, load, and temperature
- ±1.1%, T_J = −40°C to +85°C
- ±1.8%, T_J = −40°C to +125°C
- Low dropout voltage: 200mV @ 200mA load, V_OUT = 5V
- User programmable soft start (LFCSP and SOIC only)
- Low quiescent current, IGND = 50μA with no load
- Low shutdown current: 1.8μA @ V_IN = 5V, 3.0μA @ V_IN = 40V
- Stable with small 2.2μF ceramic output capacitor

ADP7118
- Low Noise: 11μVRMS independent of fixed output voltage
- PSRR of 88dB @ 10KHz, 68dB @ 100KHz, 50dB @ 1MHz, V_OUT ≤5V, V_IN = 7V
- Input voltage range: 2.7V to 20V
- Maximum output current: 200mA
- Initial accuracy: ±0.8%
- Accuracy over line, load, and temperature
- ±1.1%, T_J = −40°C to +85°C
- ±1.8%, T_J = −40°C to +125°C
- Low dropout voltage: 200mV @ 200mA load, V_OUT = 5V
- User programmable soft start (LFCSP and SOIC only)
- Low quiescent current, IGND = 50μA with no load
- Low shutdown current: 1.8μA @ V_IN = 5 V, 3.0μA @ V_IN = 20V
- Stable with small 2.2μF ceramic output capacitor

Applications

ADP7142
- Regulation to noise-sensitive applications
- ADC, DAC circuits, precision amplifiers, power for VCO V_tune control
- Communications and infrastructure
- Medical and healthcare
- Industrial and instrumentation

ADP7118
- Regulation to noise-sensitive applications
- ADC, DAC circuits, precision amplifiers, power for VCO V_tune control
- Communications and infrastructure
- Medical and healthcare
- Industrial and instrumentation