NCP705MT18TCG

Noise sensitive RF applications such as Power Amplifiers in satellite radios, infotainment equipment, and precision instrumentation require very clean power supplies. The NCP705 is 500 mA LDO that provides the engineer with a very stable, accurate voltage with ultra low noise and very high Power Supply Rejection Ratio (PSRR) suitable for RF applications. The device doesn’t require any additional noise bypass capacitor to achieve ultra−low noise performance. In order to optimize performance for battery operated portable applications, the NCP705 employs dynamic Iq management for ultra−low quiescent current consumption at light−load conditions and great dynamic performance.

Applications

• PDAs, Mobile Phones, GPS, Smartphones
• Wireless Handsets, Wireless LAN, Bluetooth, ZigBee
• Portable Medical Equipment
• Other Battery Powered Applications

Key features

• Operating Input Voltage Range: 2.5 V to 5.5 V
• Available − Fixed Voltage Option: 0.8 V to 3.5 V
• Adjustable Voltage Option: 0.8 V to 5.5 V−VDROP
• Reference Voltage 0.8 V
• Ultra−Low Quiescent Current of Typ. 13 μA
• Ultra−Low Noise: 12 μVRMS from 100 Hz to 100 kHz
• Very Low Dropout: 230 mV Typical at 500 mA
• ±2% Accuracy Over Load/Line/Temperature
• High PSRR: 71 dB at 1 kHz
• Internal Soft−Start to Limit the Turn−On Inrush Current
• Thermal Shutdown and Current Limit Protections
• Stable with a 1 μF Ceramic Output Capacitor
• Active Output Discharge for Fast Turn−Off
• These are Pb−Free Devices