ADP7102ARDZ-1.8-R7

The ADP7102 is a CMOS, low dropout linear regulator that operates from 3.3 V to 20 V and provides up to 300 mA of output current. This high input voltage LDO is ideal for regulation of high performance analog and mixed signal circuits operating from 19 V to 1.22 V rails. Using an advanced proprietary architecture, it provides high power supply rejection, low noise, and achieves excellent line and load transient response with just a small 1 μF ceramic output capacitor. The ADP7102 is available in seven fixed output voltage options and an adjustable version, which allows output voltages that range from 1.22 V to VIN - VDO via an external feedback divider. The ADP7102 output noise voltage is 15 μV rms and is independent of the output voltage. A digital power - good output allows power system monitors to check the health of the output voltage. A user programmable precision undervoltage lockout function facilitates sequencing of multiple power supplies. The ADP7102 is available in 8 - lead, 3 mm×3 mm LFCSP and 8 - lead SOIC packages. The LFCSP offers a very compact solution and also provides excellent thermal performance for applications requiring up to 300 mA of output current in a small, low profile footprint.

Applications

• Regulation to noise sensitive applications: ADC, DAC circuits, precision amplifiers, high frequency oscillators, clocks, and phase - locked loops
• Communications and infrastructure
• Medical and healthcare
• Industrial and instrumentation

Key features

• Input voltage range: 3.3 V to 20 V
• Maximum output current: 300 mA
• Low noise: 15 μV rms for fixed output versions
• PSRR performance of 60 dB at 10 kHz, VOUT = 3.3 V
• Reverse current protection
• Low dropout voltage: 200 mV at 300 mA load
• Initial accuracy: ±0.8%
• Accuracy over line, load, and temperature: -2%, +1%
• Low quiescent current (VIN = 5 V), IGND = 750 μA with 300 mA load
• Low shutdown current: 40 μA at VIN = 12 V
• Stable with small 1 μF ceramic output capacitor
• 7 fixed output voltage options: 1.5 V, 1.8 V, 2.5 V, 3 V, 3.3 V, 5 V, and 9 V
• Adjustable output from 1.22 V to VIN - VDO
• Foldback current limit and thermal overload protection
• User programmable precision UVLO/enable
• Power - good indicator
• 8 - lead LFCSP and 8 - lead SOIC packages