CM2855IM26

CM2855 300mA CMOS LDO WITH EN & PG GENERAL DESCRIPTION The CM2855 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-23-6 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 CM2855 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 of 2.6V to 7.0V Thermal Shutdown Current Limiting Power Good Output Function Compact Package: SOT-23-6 Adjustable 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 IN EN PG OUT C M 2855 GND ADJ OUT R1 5V C1 1uF R2 C3 2.2uF Note: 1. Suggest to add a small Cap 100pF between OUT and connection of R1and R2 to get less VOUT ripple Vout = Vref * (1 + R1/R2); Vref = 1.176V 2. Enable pin can not be floating. 2004/6/01 Rev. 1.2 Champion Microelectronic Corporation Page 1 CM2855 300mA CMOS LDO WITH EN & PG PIN CONFIGURATION SOT-23-6 Top View 6 5 4 VOUT ADJ GND VIN 1 2 BLOCK DIAGRAM IN EN PG 3 OUT 1uA O vercurrent Shutdown Thermal Shutdown EN PG + AMP ADJ + Vref x 85% Vref = 1.176V GND 2004/6/01 Rev. 1.2 Champion Microelectronic Corporation Page 2 CM2855 300mA CMOS LDO WITH EN & PG ORDERING INFORMATION Part Number CM2855IM26 CM2855GIM26* *Note: G : Suffix for Pb Free Product Output Voltage Adjustable Adjustable Temperature Range -40℃ ~ +85℃ -40℃ ~ +85℃ Package SOT-23-6 SOT-23-6 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 (ΘJA) Internal Power Dissipation (PD) Maximum Junction Temperature Maximum Lead Temperature (10 Sec) SOT-23-6 SOT-23-6 Maximum 260 Note 1 150 300 Unit ℃/W ℃ ℃ Caution: Stress above the listed absolute rating may cause permanent damage to the device. Note 1: PD(MAX) = (TJ(MAX) – TA)/θJA, where θJA depends on the printed circuit layout. 2004/6/01 Rev. 1.2 Champion Microelectronic Corporation Page 3 CM2855 300mA CMOS LDO WITH EN & PG ELECTRICAL CHARACTERISTICS TA = +25℃; VIN = VIN(MIN) unless otherwise noted CM2855 Min. Note 2 IO = 1mA IO = 300mA, VOUT=VO(NOM)-2.5%, 1.2V< VO(NOM) 1.2V VOUT < 0.8V (Note 3) IO = 0mA IO = 1mA to 300mA VO = VBG, load = 10mA IOUT=1mA, VIN=VOUT+1 to VOUT+2 VOUT < 2.0V 2.0V