ADP7102ACPZ-R7

The ADP7102 is a CMOS, low dropout linear regulator operating from a 3.3 V to 20 V supply with a maximum output current of 300 mA. This high input voltage LDO is designed for regulating 19 V to 1.22 V supplies in high performance analog and mixed-signal circuits. The device employs an advanced proprietary architecture to deliver high power supply rejection and low noise, requiring only a single 1 μF small ceramic output capacitor to achieve excellent line and load transient response. The ADP7102 offers 7 fixed output voltage options and an adjustable output version, which allows the output voltage to be set from 1.22 V to VIN − VDO using an external resistor divider. The ADP7102 output noise voltage is 15 μV rms and is independent of the output voltage. These devices feature a power good digital output pin, allowing a power system monitor to check whether the output voltage is within regulation. A user-programmable precision undervoltage lockout function facilitates sequencing control of multiple power supplies. The ADP7102 is available in an 8-lead 3 mm × 3 mm LFCSP and an 8-lead SOIC package. The LFCSP not only provides an ultracompact solution but also offers excellent thermal performance, meeting up to 300 mA output current requirements in small, low-profile board space applications.

Applications

• Noise-sensitive applications: ADC, DAC circuits, precision amplifiers, high-frequency oscillators, clocks, and PLL
• 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: 75 μV rms (fixed output version)
• PSRR performance: 60 dB (10 kHz, Vout = 3.3 V)
• Reverse current protection
• Low dropout: 200 mV (300 mA load)
• Initial accuracy: ±0.8%
• Accuracy over full line, load, and temperature range: -2%, +1%
• Low quiescent current (VIN = 5 V): IGND = 750 μA (300 mA load)
• Low shutdown current: 40 μA (at VIN = 12 V)
• Stable operation with 1 μF small 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 voltage range: 1.22 V to VIN - VDO
• Foldback current limiting and thermal overload protection
• User-programmable precision UVLO/enable function
• Power good indication
• 8-lead LFCSP and 8-lead SOIC packages