ADI ADP166ACBZ-2.3-R7

The ADP165/ADP166 are ultralow quiescent current, low dropout (LDO) linear regulators operating from 2.2 V to 5.5 V with output currents up to 150 mA. The dropout voltage is only 120 mV at 150 mA load; the low dropout characteristic not only improves efficiency but also allows the devices to operate over a wide input voltage range. The ADP165/ADP166 are specifically designed to be stable with small 1 μF ±30% ceramic input and output capacitors, meeting the demands of high-performance, space-constrained applications. The ADP165/ADP166 offer seven fixed output voltage options ranging from 1.2 V to 3.3 V, plus one adjustable output option. The ADP165 includes a discharge resistor that automatically discharges the output when the LDO is disabled. The ADP166 does not include the output discharge function but is otherwise identical to the ADP165. Short-circuit and thermal overload protection circuits prevent damage to the devices under adverse conditions. The ADP165/ADP166 are available in compact 5-lead TSOT, 6-lead LFCSP, and 4-ball, 0.5 mm pitch WLCSP packages, providing the smallest footprint solution for a wide range of portable power applications.

• Ultra-low quiescent current I_Q = 590 nA (0 μA load), I_Q = 890 nA (1 μA load)
• Ultra-low quiescent current maintained at low dropout (active mode), I_Q_DROP = 720 nA (0 μA load), I_Q_DROP = 1200 nA (1 μA load)
• Stable operation with 1 μF ±30% ceramic input and output capacitors
• Maximum load current (I_LOAD_MAX): 150 mA
• Input voltage range: 2.2 V to 5.5 V
• Low shutdown current: 50 pA (typical)
• Low dropout: 120 mV (150 mA load)
• Initial output voltage accuracy: ±1%
• Accuracy over full line, load, and temperature range: ±3.5%
• 7 fixed output voltage options: 1.2 V to 3.3 V
• Adjustable output voltage option settable from 1.0 V to 4.2 V
• PSRR: 72 dB (100 Hz, V_out = 1.2 V)
• Current limiting and thermal overload protection
• Logic-controlled enable
• Integrated output discharge resistor
• Three package options: 5-pin TSOT, 6-pin 2 mm × 2 mm LFCSP, 4-pin 0.5 mm pitch WLCSP

• Portable and battery-powered devices
• Post DC-DC regulation
• Portable medical equipment
• Wireless Sensor Network (WSN) devices