SPX5205

SPX5205 150mA, Low-Noise LDO Voltage Regulator Description The SPX5205 is a positive voltage regulator with very low dropout voltage, output noise and ground current (750μA at 100mA). VOUT has a tolerance of less than 1% and is temperature compensated. Fixed output voltages 1.8V, 3.0V, 3.3V, and 5.0V and an adjustable version are available in a small 5-pin SOT-23 package. Other key features include zero off-mode current, reverse battery protection, thermal shutdown and current limit. The SPX5205 is an excellent choice for use in batterypowered applications, and where power conservation is desired such as: cellular/ cordless telephones, radio control systems and portable computers. Top Vi ew V OUT BYP Top Vi ew V OUT ADJ 54 SPX5205 123 54 SPX5205 12 3 V IN GND EN Fixed Output Voltage V IN GND EN Adjustable Output Voltage Typical Applications Circuit FEATURES ■■ Low Noise Output LDO: 40μVRMS Possible ■■ 1% Initial Accuracy ■■ Very Low Quiecent Current: 70μA ■■ Low Dropout Voltage (210mV at 150mA) ■■ Current and Thermal Limiting ■■ Reverse-Battery Protection ■■ Wide Range of Fixed Output Voltages: 1.8V, 3.0V, 3.3V and 5.0V ■■ Zero Off-Mode Current ■■ Small 5-Pin SOT-23 ■■ Pin Compatible to MIC5205/MAX8877 (fixed options only) and LP2985 APPLICATIONS ■■ PDA ■■ Battery Powered Systems ■■ Cellular Phone ■■ Cordless Telephones ■■ Radio Control Systems ■■ Laptop, Palmtop and Notebook Computers ■■ Portable Consumer Equipment ■■ Portable Instrumentation ■■ Bar Code Scanner...