ADP7118ARDZ-1.8

The ADP7118 is a CMOS, low dropout (LDO) linear regulator powered by a 2.7 V to 20 V supply with a maximum output current of 200 mA. This high input voltage LDO is designed for regulating high-performance analog and mixed-signal circuits supplied from 20 V to 1.2 V. The device employs an advanced proprietary architecture to deliver high power supply rejection, low noise, and excellent line and load transient response with only a single 2.2 μF small ceramic output capacitor. The ADP7118 output noise is 11 μV rms, independent of fixed output voltage options at 5 V and below. The ADP7118 offers 16 fixed output voltage options. The following voltage versions are available from stock: 1.2 V (adjustable), 1.8 V, 2.5 V, 3.3 V, and 5.0 V. The following voltage versions are available upon special request: 1.5 V, 1.85 V, 2.0 V, 2.2 V, 2.75 V, 2.8 V, 2.85 V, 3.8 V, 4.2 V, and 4.6 V. Each fixed output voltage can be adjusted above the initial setpoint using an external feedback resistor divider. This allows the ADP7118 to provide output voltages from 1.2 V to VN − VDO with high PSRR and low noise. The LFCSP and SOIC packages support user-programmable soft start via an external capacitor. The ADP7118 is available in a compact 6-lead, 2 mm × 2 mm LFCSP package with excellent thermal performance, suitable for thin, small form factor applications requiring up to 200 mA output current. The ADP7118 is also available in a 5-lead TSOT package and an 8-lead SOIC package.

Applications

• Noise-sensitive ADC and DAC circuits, precision amplifiers, suitable for VCO control supply
• Communications and infrastructure
• Medical and healthcare
• Industrial and instrumentation

Key features

• Low noise: 11 μV rms, independent of fixed output voltage
• PSRR: 88 dB (10 kHz), 68 dB (100 kHz), 50 dB (1 MHz) (VOUT ≤ 5 V, VIN = 7 V)
• Input voltage range: 2.7 V to 20 V
• Maximum output current: 200 mA
• Initial accuracy: ±0.8%
• Accuracy over line, load, and temperature:
• ±1.1% (Tj = -40°C to +85°C)
• ±1.8% (Tj = -40°C to +125°C)
• Low dropout: 200 mV (typical, 200 mA load, VOUT = 5 V)
• User-programmable soft-start (LFCSP and SOIC packages only)
• Low quiescent current, IGND = 50 μA (typical, no load)
• Low shutdown current: 1.8 μA (VIN = 5 V), 3.0 μA (VIN = 20 V)
• Stable with small 2.2 μF ceramic output capacitor
• Fixed output voltage options: 1.8 V, 2.5 V, 3.3 V, and 5.0 V; 16 standard voltages available from 1.2 V to 5.0 V
• Adjustable output voltage range: 1.2 V to VIN - VDO (output adjustable above initial setpoint)
• Precision enable
• 2 mm × 2 mm 6-lead LFCSP, 8-lead SOIC, 5-lead TSOT