CM2843GAIM25

CM2843 300mA CMOS LDO WITH EN & PG GENERAL DESCRIPTION The CM2843 family is positive, linear regulators featured low quiescent current (30µA typ.) with low dropout voltage, making them ideal for battery applications. The space-saving SOT-23-5 package is attractive for “Pocket” and “Hard Held” applications. These rugged devices have both Thermal Shutdown, and Current Fold-back to prevent device failure under the “Worst” of operating conditions. An additional feature is a “Power Good” detector, which pulls low when the output is out of regulation. The CM2843 is stable with an output capacitance of 2.2µF or greater. FEATURES Very Low Dropout Voltage Low Current Consumption: Typ. 30µA, Max. 35µA High Accuracy Output Voltage: +/- 2.5% Guaranteed 300mA Output Input Range up to 7.0V Thermal Shutdown Current Limiting Power Good Output Function Compact Package: SOT-23-5 Factory Pre-set Output Voltages Short Circuit Current Fold-Back Low Temperature Coefficient APPLICATIONS Battery-powered devices Personal communication devices Home electric/electronic appliances PC peripherals TYPICAL APPLICATIONS IN 1M Ω IN PG CM 2843 GND OUT EN O UT 5V C1 1uF C PG * For programming delay C2 4.7uF 2004/06/01 Rev. 1.3 Champion Microelectronic Corporation Page 1 CM2843 300mA CMOS LDO WITH EN & PG PIN CONFIGURATION SOT-23-5 Top View 5 4 OUT GND 2 VIN 1 BLOCK DIAGRAM IN EN 3 PG OUT 1uA O vercurrent Shutdown Therm al Shutdown EN R1 PG + AMP + Vref = 1.176V Vref x 85% R2 GND 2004/06/01 Rev. 1.3 Champion Microelectronic Corporation Page 2 CM2843 300mA CMOS LDO WITH EN & PG ORDERING INFORMATION Part Number CM2843ACIM25 CM2843ABIM25 CM2843AIM25 CM2843GACIM25 CM2843GABIM25 CM2843GAIM25 Output Voltage 1.2V 1.3V 1.5V 1.2V 1.3V 1.5V Temperature Range -40℃ ~ +85℃ -40℃ ~ +85℃ -40℃ ~ +85℃ -40℃ ~ +85℃ -40℃ ~ +85℃ -40℃ ~ +85℃ Package SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 Note: For other pre-set output voltage, please contact Champion Sales office. ABSOLUTE MAXIMUM RATINGS Input Voltage Output Current Output Voltage …………….……………………………. +7V …………………….…… PD / (VIN - Vo) …………………… GND-0.3V to VIN+0.3V OPERATING RATINGS Ambient Temperature Range (TA) ……... -40℃ to +85℃ Junction Temperature Range …..…... -40℃ to +125℃ ESD Classification ………………………………………… B THERMAL INFORMATION Parameter Thermal Resistance (Θjc) Internal Power Dissipation (PD) (ΔT = 100℃) Maximum Junction Temperature Maximum Lead Temperature (10 Sec) SOT-23-5 SOT-23-5 Maximum 160 250 150 300 Unit ℃/W mW ℃ ℃ *With Junction sink capable of twice times ofΘjc Caution: Stress above the listed absolute rating may cause permanent damage to the device. 2004/06/01 Rev. 1.3 Champion Microelectronic Corporation Page 3 CM2843 300mA CMOS LDO WITH EN & PG ELECTRICAL CHARACTERISTICS TA = +25℃; unless otherwise noted CM2843 Min. Note 1 IO = 1mA IO = 300mA, VOUT=VO(NOM)-2%, 1.2V< VO(NOM)