LP5904

LP5904 www.ti.com SNVS637G – MARCH 2011 – REVISED APRIL 2013 Ultra Low Noise, 200 mA Linear Regulator for RF/Analog Circuits - Requires No Bypass Capacitor Check for Samples: LP5904 FEATURES 1 Stable with 1.0 µF Ceramic Input and Output Capacitors No Noise Bypass Capacitor Required Remote Output Capacitor Placement Thermal-overload and Short-circuit Protection –40°C to +125°C Junction Temperature Range for Operation APPLICATIONS Cellular Phones PDA Handsets Wireless LAN Devices KEY SPECIFICATIONS Input Voltage Range … 2.2V to 5.5V Output Voltage Range … 1.2V to 4.4V Output Current … 200 mA Low Output Voltage Noise at 200 mA … 6.5µVRMS PSRR … 78 dB at 1kHz Output Voltage Tolerance … ± 2% Virtually Zero IQ (Disabled) … <1 µA Very Low IQ (Enabled) … 11 µA Startup Time … 85 µs Low Dropout … 95 mV typ PACKAGE 4-Bump DSBGA (lead free) 0.815 mm × 0.815 mm × 0.600 mm DESCRIPTION The LP5904 is a linear regulator capable of supplying 200 mA output current. Designed to meet the requirements of RF/ Analog circuits, the LP5904 device provides low noise, high PSRR, low quiescent current, and low line transient response figures. Using new innovative design techniques the LP5904 offers class-leading device noise performance without a noise bypass capacitor and the ability for remote output capacitor placement. An active pulldown circuit with a 280Ω resistor is wired from the output to ground pins to quickly discharge output when the device is disabl...