G922 Global Mixed-mode Technology Inc. High Input Voltage, High PSRR, Low Quiescent Current LDO Regulator Features General Description The G922 is a highly accurate, low dropout regulator with 100mA output driving capacity and ultra-low ground current. The G922 can work in a wide operation range from 5V up to 24V. The quiescent current is small even at high input voltage. The typical current consumption is about 10μA. It is stable with either ceramic or tantalum output capacitor, the minimum output capacitor is only 2.2μF required. It is very suitable for the battery-powered portable equipment, especially the keep-alive system. The G922 can provide the higher performance and a longer battery service life. Low Current Consumption , Typically 10μA Output Voltage Accuracy ±2.5% Output Adjusts from 1.24 to (VIN-1)V Low Dropout Voltage of 320mV @ IO = 30mA Stable with Ceramic or Tantalum Capacitors Wide Operating range : 5V ~ 24V Low Shutdown Current , Typically 1µA Good Line Regulation and Load Regulation Specifications Thermal Shutdown and Current Limit Protection Embedded SOT-23-5 and SOP-8 Package Available Ordering Information Applications Keep-Alive Supply in Notebook and Portable Computers Logic Supply for High-Voltage Batteries Automotive Electronics Battery Powered Systems 3-4 Cell Li-Ion Battery Input Range ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) G922T11U G922T12U 922Ax 922Bx -40°C to 85°C -40°C to 85°C SOT-23-5 SOT-23-5 G922P11U G922A -40°C to 85°C SOP-8 Note: T1: SOT-23-5 P1: SOP-8 1or 2: Bonding Code U: Tape & Reel Pin Configuration Typical Application Circuit G922 T11 IN 1 GND 2 EN 3 5 OUT 4 ADJ 1 VIN EN 1 8 GND IN 2 7 GND 1 GND 2 OUT 3 5 EN ADJ 3 6 GND OUT 4 5 GND 3 EN VOUT R1 ADJ EN IN 5 G922 GND CIN=1µF G922 T12 OUT G922 2 SOT-23-5 IN CBYPASS 4 COUT=2.2µF R2 SOP-8 4 ADJ Note: *R2(Feed back resistor) should be smaller than 300kΩ **CBYPASS is optional SOT-23-5 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.4 Aug 03, 2009 1