ADP151-EP Datasheet

• Ultralow noise: 9 µV rms
• Input voltage range: 2.2 V to 5.5 V
• Low quiescent current
  • I_GND = 10 µA with 0 load
  • I_GND = 265 μA with 200 mA load
• Low shutdown current: <1 µA
• Low dropout voltage: 150 mV at 200 mA load
• Accuracy over line, load, and temperature: −2.5%/+3%
• PSRR performance of 70 dB at 10 kHz
• Current-limit and thermal overload protection
• Internal pull-down resistor on EN input
• 5-lead TSOT package
• Enhanced processing (EP) for −55°C to +125°C operation

• RF, VCO, and PLL power supplies
• Portable and battery-powered equipment
• Post dc-to-dc regulation
• Portable medical devices
• Aeronautic and military operating temperature environment

The ADP151-EP is an ultralow noise, low dropout linear regulator that operates from 2.2 V to 5.5 V and provides up to 200 mA of output current. The low 150 mV dropout voltage at 200 mA load improves efficiency and allows operation over a wide input voltage range.

Using an innovative circuit topology, the ADP151-EP achieves ultralow noise performance without the necessity of a bypass capacitor, making it ideal for noise-sensitive analog and RF applications. The ADP151-EP also achieves ultralow noise performance without compromising PSRR or transient line and load performance. The low 265 μA of quiescent current at 200 mA load makes the ADP151-EP suitable for batteryoperated portable equipment.

The ADP151-EP also includes an internal pull-down resistor on the EN input.

The ADP151-EP is specifically designed for stable operation with tiny 1 µF, ±30% ceramic input and output capacitors to meet the requirements of high performance, space constrained applications.

The ADP151-EP is capable of 16 fixed output voltage options, ranging from 1.1 V to 3.3 V.

Short-circuit and thermal overload protection circuits prevent damage in adverse conditions. The ADP151-EP is available in a tiny 5-lead TSOT package.

Additional application and technical information can be found in the ADP151 data sheet.