PAM3101DAB285

PAM3101 300mA High PSRR Low Dropout CMOS Linear Regulator F eatures n Low Dropout Voltage: 180mV@300mA (V O=3.3V) n Output Voltage Accuracy within ±2% n Quiescent Current : 65 μ A Typ. n High PSRR: 70dB@1kHz n Excellent Line and Load Regulation n Fast Response n Current Limiting n Short Circuit Protection n Low Temperature Coefficient n Shutdown Current : 0.5 μ A n Thermal Shutdown n Space Saving Package: SOT-23 , SOT-89 and SC70 n Pb-Free Package General Description The PAM3101 series of positive voltage linear regulators feature low quiescent current (65 μ A Typ.) and low dropout voltage, making them ideal for battery powered applications. Their high PSRR make them useful in applications where AC noise on the input power supply must be suppressed. Space-saving SOT-23, SOT-89 and SC70 packages are attractive for portable and handheld applications. They have both thermal shutdown and current limit features to prevent device failure from extreme operating conditions. They are stable with an output capacitor of 2.2 μ F or greater. Applications n n n n n n n Cordless Phones Cellular Phones Bluetooth Earphones Digital Cameras Portable Electronics WLANs MP3 Players Typical Application IN Block Diagram OUT VIN VOUT PAM3101 EN C IN 1μF VIN VOUT GND BYP C BYP 10nF CO 2.2 μ F OverCurrent Shutdown EN BYP IN Thermal Protection Amp GND VIN VOUT PAM3101 GND C IN 1μF OUT Bandgap CO 2.2 μ F Power Analog Microelectronics , Inc www.poweranalog.com 09/2008 Rev 1.4 1 PAM3101 300mA High PSRR Low Dropout CMOS Linear Regulator P in Configuration & Marking Information Top View SOT23-3 3 Top View SOT23-5 5 4 AAVYW AAVYW 1 2 1 2 3 Top View SOT89-3 5 Top View SOT89-5 4 AA: Product Code of PAM3101 V: Voltage Code X: Internal Code Y: Year W: Week P3101V XXXYW P3101V XXXYW 1 2 3 1 2 3 Top View SC70-3L 3 Top View SC70-4L Top View SC70-5L 4 3 5 4 AAVYW 1 2 AAVYW 1 2 1 AAVYW 2 3 Power Analog Microelectronics , Inc www.poweranalog.com 09/2008 Rev 1.4 2 PAM3101 300mA High PSRR Low Dropout CMOS Linear Regulator Pin Configuration Available Pin 1 GND SOT23-3 VIN VOUT SOT89-3 SOT23-5 SOT89-5 SC70-3L SC70-4L SC70-5L GND VOUT VIN VOUT VIN EN VIN 2 VOUT VOUT GND VIN GND GND GND VOUT GND GND 3 VIN GND VIN VOUT VIN EN NC GND VOUT EN VIN BYP VOUT BYP EN VOUT VIN 4 5 P in Descriptions Name VIN GND VOUT EN BYP NC Input Ground Output Chip Enable (active high) Bypass Pin, need a 10nF capacitor connect to GND No Connection Function Power Analog Microelectronics , Inc www.poweranalog.com 09/2008 Rev 1.4 3 PAM3101 300mA High PSRR Low Dropout CMOS Linear Regulator A bsolute Maximum Ratings These are stress ratings only and functional operation is not implied . Exposure to absolute maximum ratings for prolonged time periods may affect device reliability . All voltages are with respect to ground . Input Voltage...............................................6.6V Output Current ......................................... 300mA Output Pin Voltage ............ GND-0.3V to V IN+0.3V Lead Soldering Temperature (5sec)....... .... 300 ° C Storage Temperature .................- 65 ° C to 150 ° C ESD Rating ............................................ Class B Recommended Operating Conditions Max. Supply Voltage (for Max. duration of 30 minutes)................................................6.4V Junction Temperature.................-40 ° C to 125 ° C Ambient Temperature....................-40 ° C to 85 ° C Thermal Information Parameter Thermal Resistance (Junction to Case) Symbol θJC Package SOT-23 SOT-89 SC70 SOT-23 Thermal Resistance (Junction to Ambient) θJA SOT-89 SC70 SOT-23 Internal Power Dissipation PD SOT-89 SC70 Maximum 130 100 TBD 250 180 300 400 550 300 mW °C/W °C/W Unit Power Analog Microelectronics , Inc www.poweranalog.com 09/2008 Rev 1.4 4 PAM3101 300mA High PSRR Low Dropout CMOS Linear Regulator E lectrical Characteristic V IN= V O+1V, T A= 25 ° C , C IN= 1 μ F, C O= 2.2 μ F, unless otherwise noted PARAMETER Input Voltage Output Voltage Accuracy Output Current SYMBOL Test Conditions V IN Vo IO Vo=1.5V Dropout Voltage Vdrop Io =300mA Vo=1.8V 2.5V£Vo