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300mA High PSRR Low Dropout CMOS Linear Regulator PAM3101 Features General Description n n n n n n n n n n n n n O : μ Low Dropout Voltage: 180mV@300mA (V =3.3V) Output Voltage Accuracy within ±2% Quiescent Current 65 A Typ. High PSRR: 70dB@1kHz Excellent Line and Load Regulation Fast Response Current Limiting Short Circuit Protection Low Temperature Coefficient Shutdown Current 0.5 A : Thermal Shutdown Space Saving Package: SOT-23 , SOT-89 and SC70 Pb-Free Package μ μ The PAM3101 series of positive voltage linear regulators feature low quiescent current (65 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 F or greater. μ Applications n n n n n n n Cordless Phones Cellular Phones Bluetooth Earphones Digital Cameras Portable Electronics WLANs MP3 Players Typical Application Block Diagram OUT VIN VOUT OverCurrent Shutdown Thermal Protection Amp EN BYP Bandgap GND IN VIN VOUT PAM3101 EN GND BYP IN C μ 1 F BYP C 10nF C O 2.2 Fμ IN VIN VOUT PAM3101 OUT GND IN C μ 1 F C O 2.2 Fμ Power Analog Microelectronics Inc , www.poweranalog.com 1 09/2008 Rev 1.4

300mA High PSRR Low Dropout CMOS Linear Regulator PAM3101 Pin Configuration & Marking Information Top View SOT23-3 3 Top View SOT23-5 5 4 AAVYW AAVYW 1 2 1 2 3 AA: Product Code of PAM3101 V: Voltage Code X: Internal Code Y: Year W: Week Top View SOT89-3 Top View SOT89-5 5 4 P3101V XXXYW P3101V XXXYW 1 2 3 1 2 3 Top View SC70-3L 3 AAVYW 1 2 Top View SC70-4L AAVYW 3 2 4 1 Top View SC70-5L 5 4 AAVYW 1 2 3 Power Analog Microelectronics Inc , www.poweranalog.com 2 09/2008 Rev 1.4

300mA High PSRR Low Dropout CMOS Linear Regulator PAM3101 Pin Configuration Available Pin SOT23-3 SOT89-3 1 GND VIN VOUT GND VOUT SOT23-5 VIN SOT89-5 VOUT SC70-3L SC70-4L SC70-5L VIN EN VIN 2 VOUT VOUT GND VIN GND GND GND VOUT GND GND 4 5 BYP EN VIN BYP VOUT VIN VOUT 3 VIN GND VIN VOUT VIN EN NC GND VOUT EN Function Pin 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 Power Analog Microelectronics Inc , www.poweranalog.com 3 09/2008 Rev 1.4

300mA High PSRR Low Dropout CMOS Linear Regulator PAM3101 Absolute Maximum Ratings implied Exposure to absolute These are stress ratings only and functional operation is not maximum ratings for prolonged time periods may affect device reliability All voltages are with respect to ground . . . Input Voltage...............................................6.6V Output Current 300mA GND-0.3V to V +0.3V Output Pin Voltage ......................................... ............ IN Lead Soldering Temperature (5sec)....... Storage Temperature ESD Rating ............................................ .................- 300 .... to 150 C C Class B 65 C ° ° ° Recommended Operating Conditions Max. Supply Voltage (for Max. duration of 30 minutes)................................................6.4V Thermal Information C Junction Temperature.................-40 Ambient Temperature....................-40 C to 85 C to 125 C ° ° ° ° Parameter Symbol Package Maximum Unit Thermal Resistance (Junction to Case) θJC Thermal Resistance (Junction to Ambient) θJA Internal Power Dissipation PD SOT-23 SOT-89 SC70 SOT-23 SOT-89 SC70 SOT-23 SOT-89 SC70 130 100 TBD 250 180 300 400 550 300 °C/W °C/W mW Power Analog Microelectronics Inc , www.poweranalog.com 4 09/2008 Rev 1.4

300mA High PSRR Low Dropout CMOS Linear Regulator PAM3101 Electrical Characteristic V V +1V, T 25 ° ,C = = = IN O IN O A C 1 F, C 2.2 F, unless otherwise noted μ μ = SYMBOL Test Conditions MIN TYP MAX UNITS Note 1 -2 300 5.5 2 V % Note 2 mA 1150 850 370 180 70 65 1400 1100 450 230 90 90 mV μA μA -0.15 0.1 0.15 -0.1 0.03 0.1 %/V -0.4 0.2 0.4 PARAMETER Input Voltage Output Voltage Accuracy Output Current VIN Vo IO Io=1mA Dropout Voltage Vdrop Io =300mA Vo=1.5V Vo=1.8V 2.5V£Vo<3.3V Vo³3.3V Ground Current Quiescent Current IGND IQ Io=1mA to 300mA Io=0mA Io=1mA, Vo<2V, VIN = 2.8V to 3.8V Line Regulation LNR Io=1mA, 2V£Vo<3.3V, VIN = Vo+0.5V to Vo+1V Io=1mA, Vo³3.3V, VIN=Vo+0.5V to Vo+1V Load Regulation Temperature Coefficient Over Temperature Shutdown Over Temperature Hysteresis LDR Tc OTS OTH Power Supply Ripple Rejection PSRR Output Noise EN Input High Threshold EN Input Low Threshold Shutdown Current Vn VIH VIL ISD Io=1mA to 300mA, Vo³2V -2 Io=1mA to 300mA, Vo<2V Io=1mA Io=1mA Io=1mA Io=100mA f=100Hz CBYP=10nF Vo=3.3V f=1kHz f =10Hz to 100kHz, CBYP=10nF VIN=2.5V to 5V VIN=2.5V to 5V VEN=0V 1 30 40 150 30 70 65 50 2 60 % mV ppm/ OC OC OC dB μVrms V V μA 1.5 0.3 1 0.01 Note1: The minimum input voltage ( V IN(MIN) ) of the PAM3101 is determined by output voltage and dropout voltage. V IN(MIN) =V +V O drop The minimum input voltage is defined as : Note 2: Output current is limited by P , maximum I =P /( O D D V IN(MAX) -V ). O Power Analog Microelectronics Inc , www.poweranalog.com 5 09/2008 Rev 1.4

300mA High PSRR Low Dropout CMOS Linear Regulator PAM3101 Typical Performance Characteristics T =25°C, V =V , C =1 F, C =2.2 F, C =10nF unless otherwise noted. μ μ , A EN IN IN O BYP 1.85 1.8 1.75 1.7 1.65 1.6 1.55 2.55 2.5 2.45 2.4 2.35 2.3 2.25 2.2 3.35 3.3 3.25 3.2 3.15 3.1 3.05 ) V ( e g a t l o V t t u p u O ) V ( e g a t l o V t t u p u O ) V ( e g a t l o V t t u p u O 3 3 1. Output Voltage vs Input Voltage 2. Output Voltage vs Output Current V = 1.8V O IO=1mA IO=150mA IO=300mA 2 2.5 3 3.5 4 4.5 5 5.5 Input Voltage (V) V = 2.5V O IO=1mA IO=150mA IO=300mA V = 1.8V O VIN=3V VIN=5V VIN=4V 0 50 100 150 200 250 300 Output Current (mA) V = 2.5V O VIN=4V VIN=5V VIN=3V 1.82 1.8 1.78 1.76 1.74 1.72 1.7 2.52 2.5 2.48 2.46 2.44 2.42 2.4 ) V ( e g a t l o V t t u p u O ) V ( e g a t l o V t t u p u O 2 2.5 3 3.5 4 4.5 5 5.5 0 50 100 150 200 250 300 Input Voltage (V) V = 3.3V O IO=1mA IO=150mA IO=300mA Output Current (mA) V = 3.3V O VIN=4V VIN=5V ) V ( e g a t l o V t u p t u O 3.32 3.3 3.28 3.26 3.24 3.22 3.2 3.5 4 4.5 5 5.5 0 50 100 150 200 250 300 Input Voltage (V) Output Current (mA) Power Analog Microelectronics Inc , www.poweranalog.com 6 09/2008 Rev 1.4

300mA High PSRR Low Dropout CMOS Linear Regulator PAM3101 Typical Performance Characteristics 3. Output Voltage vs Temperature 4. Ground Current vs Input Voltage ) V ( e g a t l o V t t u p u O ) V ( e g a t l o V t t u p u O ) V ( e g a t l o V t u p t u O 1.82 1.8 1.78 1.76 1.74 1.72 1.7 2.52 2.5 2.48 2.46 2.44 2.42 2.4 3.32 3.3 3.28 3.26 3.24 3.22 3.2 V = 1.8V O VIN=3V,IO=30mA VIN=3V,IO=300mA 25 45 65 85 105 125 Temperature (℃) V = 2.5V O V IN=3V,IO=30mA V IN=3V,IO=300mA V = 1.8V O IO=300mA IO=150mA IO=1mA 2 2.5 3 3.5 4 4.5 5 5.5 Input Voltage (V) V = 2.5V O IO=150mA IO=300mA IO=1mA ) A µ ( t n e r r u C d n u o r G ) A µ ( t n e r r u C d n u o r G 100 90 80 70 60 50 40 90 85 80 75 70 65 60 55 50 45 40 25 45 65 85 105 125 2 2.5 3 3.5 4 4.5 5 5.5 Temperature (℃) V = 3.3V O VIN=3.8V,IO=30mA VIN=3.8V,IO=300mA Input Voltage (V) V = 3.3V O IO=150mA IO=300mA IO=1mA ) A µ ( t n e r r u C d n u o r G 90 85 80 75 70 65 60 55 50 25 45 65 85 105 125 3 3.5 4 4.5 5 5.5 Temperature (℃) Input Voltage (V) Power Analog Microelectronics Inc , www.poweranalog.com 7 09/2008 Rev 1.4

300mA High PSRR Low Dropout CMOS Linear Regulator PAM3101 Typical Performance Characteristics 5. Dropout Voltage vs Output Current 6. Dropout Voltage vs Temperature ) V ( e g a t l o V t u o p o r D 1000 800 600 400 200 0 0 V = 1.8V O 950 900 ) V m 850 ( e g a t l o V V = 1.8V,I =300mA O O t u o p o r D 800 750 700 50 100 150 200 250 300 25 45 65 85 105 125 ) V m ( e g a t l o V t u o p o r D ) V m ( g a t l o V t u o p o r D 450 400 350 300 250 200 150 100 50 0 200 180 160 140 120 100 80 60 40 20 0 Temperature (℃) V = 2.5V ,I =300mA O O 25 45 65 85 105 125 Temperature (℃) V = 3.3V ,I =300mA O O Output Current (mA) V = 2.5V O 450 400 ) V m ( e g a t l o V 0 50 100 150 200 250 300 Output Current (mA) V = 3.3V O t u o p o r D ) V m ( e g a t l o V t u o p o r D 350 300 250 200 250 200 150 100 50 0 50 100 150 200 250 300 0 25 45 65 85 105 125 Output Current (mA) Temperature (℃) Power Analog Microelectronics Inc , www.poweranalog.com 8 09/2008 Rev 1.4

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PAM3101DAB28(芯片资料).pdf

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