G918 Global Mixed-mode Technology Inc. 300mA High PSRR, Low Noise, LDO Regulators Features General Description The G918 series is a low supply current, high PSRR, low noise, and low dropout linear regulator that comes in a space saving SOT-23-5 package. The supply current at no-load is 100µA. In the shutdown mode, the maximum supply current is less than 1µA. Operating voltage range is from 2.5V to 6.0V. The over-current protection limit is set at 750mA typical. An over-temperature protection circuit is built-in in the Device to prevent thermal overload. These power saving features make the G918 series ideal for use in the battery-powered applications such as notebook computers, cellular phones, and PDA’s. Low, 100µA No-Load Supply Current Guaranteed 300mA Output Current Dropout Voltage is 400mV @ 300mA Load PSRR=45dB (f =10kHz ,300mA Load) Over-Temperature Protection and Short-Circuit Protection Adjustable Mode: from 0.8V to 5.50V Max. Supply Current in Shutdown Mode < 1µA Stable with low cost ceramic capacitors Applications Notebook Computers Cellular Phones PDAs Digital still Camera and Video Recorders Hand-Held Devices Audio Codec The G918 has one modes of operation. When an output other than the preset value is needed, two external resistors should be used as a voltage divider. The output voltage is then adjusted by the resistor ratio. Ordering Information ORDER NUMBER MARKING VOLTAGE TEMP. RANGE PACKAGE (Green) G918T11U 918Ax Adjustable -40°C~ +85°C SOT-23-5 G918T12U 918Bx Adjustable -40°C~ +85°C SOT-23-5 For other output voltage, please contact us at [email protected] Note: T1: SOT-23-5 1 & 2: Bonding Code U: Tape & Reel Pin Configuration Typical Application Circuit G918 T11 IN 1 GND 2 SHDN 3 5 OUT 4 SET ＋ SOT-23-5 OUTPUT VOLTAGE OUT IN R1 G918 SET － BATTERY CIN 1µF G918 T12 SHDN 1 GND 2 IN 3 5 SHDN R2 GND COUT 4.7µF SET Adjustable mode 4 OUT SOT-23-5 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.2 Apr 20, 2011 1