G923 Global Mixed-mode Technology Inc. 300mA High PSRR LDO Regulators Features General Description The G923 is a low supply current, high PSRR, and low dropout linear regulator that comes in a space saving SOT-23-5 package. The supply current at no-load is 90µA. In the shutdown mode, the maximum supply current is less than 1µA. Operating voltage range of the G923 is from 2.50V to 5.50V. The over-current protection limit is set at 550mA typical. An over- temperature protection circuit is built-in in the G923 to prevent thermal overload. These power saving features make the G923 ideal for use in the battery-powered applications such as notebook computers, cellular phones, and PDA’s. Low, 90µA No-Load Supply Current Guaranteed 300mA Output Current Dropout Voltage is 200mV @ 150mA Load PSRR=65dB @ 120Hz Over-Temperature Protection and Short-Circuit Protection Two Modes of Operation ---Fixed Mode: 1.50V~5.00V Adjustable Mode: from 1.25V to 5.50V Max. Supply Current in Shutdown Mode < 1µA Low Output Noise at 238µVRMS Stable with low cost ceramic capacitors The G923 has two modes of operation. When the SET pin is connected to ground, its output is a pre-set value: 1.50V~5.00V. There is no external component needed to decide the output voltage. 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 decided by the resistor ratio. The G923 comes in a space saving SOT-23-5 package. Applications Notebook Computers Cellular Phones PDAs Digital still Camera and Video Recorders Hand-Held Devices Audio Codec Pin Configuration Typical Application Circuit IN ＋C BATTERY G923 IN GND SHDN 1 5 COUT 4.7µF SHDN _ 1µF OUTPUT VOLTAGE OUT SET SET Fixed mode GND 2 G923 G963 IN 4 3 ＋ SOT-23-5 OUTPUT VOLTAGE OUT IN OUT R1 G923 SET － BATTERY CIN 1µF SHDN GND R2 COUT 4.7µF Adjustable mode TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.8 Apr 20, 2011 1 G923 Global Mixed-mode Technology Inc. Ordering Information ORDER NUMBER (Pb free/Green) MARKING VOLTAGE TEMP. RANGE PACKAGE G923-330T1Uf 92AUx 3.30V -40°C~ +85°C SOT-23-5 For other output voltage, please contact us at [email protected] Note: T1: SOT-23-5 U: Tape & Reel Selector Guide ORDER NUMBER (Pb free/Green) OUTPUT VOLTAGE (V) MARKING G923-150T1Uf G923-160T1Uf G923-170T1Uf G923-180T1Uf G923-190T1Uf G923-200T1Uf G923-210T1Uf G923-220T1Uf G923-230T1Uf G923-240T1Uf G923-250T1Uf G923-260T1Uf G923-270T1Uf G923-280T1Uf G923-285T1Uf G923-290T1Uf G923-300T1Uf G923-310T1Uf G923-315T1Uf G923-320T1Uf G923-330T1Uf G923-340T1Uf G923-350T1Uf G923-360T1Uf G923-370T1Uf G923-380T1Uf G923-390T1Uf G923-400T1Uf G923-410T1Uf G923-420T1Uf G923-430T1Uf G923-440T1Uf G923-450T1Uf G923-460T1Uf G923-470T1Uf G923-475T1Uf G923-480T1Uf G923-490T1Uf G923-500T1Uf 1.50 1.60 1.70 1.80 1.90 2.00 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.85 2.90 3.00 3.10 3.15 3.20 3.30 3.40 3.50 3.60 3.70 3.80 3.90 4.00 4.10 4.20 4.30 4.40 4.50 4.60 4.70 4.75 4.80 4.90 5.00 92AAx 92ABx 92ACx 92ADx 92AEx 92AFx 92AGx 92AHx 92AIx 92AJx 92AKx 92ALx 92AMx 92ANx 92AOx 92APx 92AQx 92ARx 92ASx 92ATx 92AUx 92AVx 92AWx 92AXx 92AYx 92AZx 92BAx 92BBx 92BCx 92BDx 92BEx 92BFx 92BGx 92BHx 92BIx 92BJx 92BKx 92BLx 92BMx TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.8 Apr 20, 2011 2