PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Key Features General Description n Low-Dropout Regulator Supports Input Voltages Down to 1.4V n Output Voltage Available in 0.9V, 1.0V, 1.2V, 1.5V, 1.8V, 2.5V,2.8V,2.85V,3.0V, 3.3V n Stable with a Ceramic Output Capacitor of 1.0uF or Higher n Low Dropout Voltage:150mV @1.5A n Low Quiescent Current n Over Temperature Shutdown n Short Circuit Protection n Low Temperature Coefficient n Standard SOT-223,TO-252 and SOP-8 (Exposed Pad) Packages n Pb-Free Package The PAM3115 is a 1.5A CMOS LDO regulator that features a low quiescent current, ultra low input, output and dropout voltages, as well as over temperature shutdown. It is available in SOT-223 , TO-252 and SOP-8(exposed pad) packages. The fixed output voltage of the PAM3115 is set at the factory and trimmed to ± 2%. The PAM3115 is stable with a ceramic output capacitor of 1.0uF or higher. This family of regulators can provide either a stand-alone power supply solution or act as a post regulator for switch mode power supplies. They are particularly well suited for applications requiring low input and output voltages. Applications n DSP, FPGA, and Microprocessor Power Supplies n 1.2V Core Voltage for DSPs n SATA Power Supply n LCD TV/ Monitors n Wireless Devices n Communication Devices n Portable Electronics n Post Regulator for SMPS Typical Application R P 10K V IN VO VIN VOUT IN PAM3115 C IN 4.7uF GND PWRGD VOUT VIN PAM3115 CO 2.2uF C1 4.7uF OUT SENSE EN GND C2 2.2uF Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 1 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Block Diagram OUT IN OUT IN OverCurrent Shutdown OverCurrent Shutdown Thermal Shutdown Thermal Shutdown EN R1 R1 AMP AMP R2 R2 GND GND Pin Configuration & Marking Information Top View SOP-8(EPD) 8 7 6 V: Voltage Code F: Internal Code A: Assembly Code T: Testing Code Y: Year W: Weekly 5 P3115 V F AT Y W 1 2 3 4 Pin Number Name Function 1 GND Ground 2 VIN Input 3 EN Enable Pin 4 GND 5 PWRGD Power Good 6 SENSE Sense 7 VOUT Output 8 GND Ground Ground Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 2 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Pin Configuration & Marking Information (continued) Top View SOT-223 Top View TO-252 P3115 V F AT Y W P3115 V F AT Y W 2 1 V: Voltage Code F: Internal Code A: Assembly Code T: Testing Code Y: Year W: Weekly 3 1 2 3 Pin Number Name Function 1 VIN Input 2 GND Ground 3 VOUT Output Absolute 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 . Maximum Output Current......................P D/(V IN-V O) Storage Temperature..................... -65℃ to 150℃ Maximum Junction Temperature..................150℃ Soldering Temperature.......................300℃, 5sec Input Voltage...............................................4.0V Output Pin Voltage.....................-0.3V to V IN+0.3V Operation Temperature Range........... -40℃ to 85℃ Operation Junction Temperature...... -40℃ to 125℃ Recommended Operating Conditions Junction Temperature Range.......... -40℃ to 125℃ Supply Voltage Range.......................1.4V to 3.6V Operation Temperature Range...........-40℃ to 85℃ Thermal Information Parameter Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) Internal Power Dissipation Symbol θJC θJA PD Package Maximum SOT-223 7 TO-252 7 SOT-223 160 TO-252 90 SOT-223 625 TO-252 1200 Unit ℃/W mW Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 3 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Electrical Characteristic V IN = V O+0.5V, T A=25 OC, C IN =4.7uF, C O=2.2uF, unless otherwise noted. Parameters Symbol Input Voltage Range VIN Output Voltage Accuracy VO Test Conditions IO=100mA IO=500mA Dropout Voltage VDROP IO=1.5A MIN TYP MAX UNITS Note 1 3.6 V -2 2 % Vo=0.9V 330 500 Vo=1.0V 220 400 2.5V>Vo≥1.2V 50 200 Vo≥2.5V 40 150 Vo=0.9V 330 500 Vo=1.0V 220 400 2.5V>Vo≥1.2V 150 350 Vo≥2.5V 120 300 Short Circuit Current ISC Vo < 0.3V 1.0 Quiescent Current IQ Io=0mA 90 Ground Pin Current IGND mV A 150 uA 600 uA 0.5 1 %/V 0.5 2 %/A Io=1mA to 1.5A VO≤2.5V,Io=10mA Line Regulation LNR VIN =Vo+0.5V to Vo+1.5V VO>2.5V,IO=10mA VIN =3.3V to 3.6V Load Regulation LDR Over Temperature Shutdown OTS 150 ℃ Over Temperature Hysteresis OTH 50 ℃ TC 40 ppm/℃ Temperature Coefficient Power Supply Ripple Rejection Output Noise PSRR Vn IO=1mA to 1.5A IO =100mA, VO=1.5V f=100Hz 55 f=1KHz 55 f=10KHz 35 f=10Hz to 100kHz 40 dB uVrms Note1: The minimum input voltage (V IN(MIN)) of the PAM3115 is determined by output voltage and dropout voltage. The minimum input voltage is defined as: V IN(MIN)=V O+V drop Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 4 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Typical Performance Characteristics T A=25°C,C IN=4.7uA,Co=2.2uF,unless otherwise noted. 1. Output Voltage vs Input Voltage Vo = 0 . 9V 1 0.9 0.8 Output Voltage(V) 0.9 Output Voltage(V) Vo=0.9V 1 Io=10mA 0.7 Io=1.5A 0.6 Io=500mA 0.5 0.8 0.7 Io=10mA,TA=85 0.6 Io=10mA,TA=25℃ 0.5 0.4 0.4 0.3 0.3 0.8 1.2 1.6 2 2.4 2.8 3.2 0.8 3.6 1.2 1.6 Vo=1.5V 1.7 Io=10mA Output Voltage(V) Output Voltage(V) 1.1 Io=1.5A Io=500mA 0.5 3.6 1.3 3.2 3.6 3.2 3.6 Io=10mA,TA=25℃ 1.1 0.9 Io=10mA,TA=85℃ 0.7 0.5 0.3 0.3 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 0.8 1.2 1.6 Input Voltage(V) 2.5 2 2.4 2.8 Input Voltage(V) Vo=2.5V 3 Vo=2.5V 3 2.5 Io=10mA Output Voltage(V) Output Voltage(V) 3.2 1.5 1.3 0.7 2.8 Vo=1.5V 1.7 0.9 2.4 Input Voltage(V) Input Voltage(V) 1.5 2 2 Io=1.5A 1.5 Io=500mA 1 2 Io=10mA,TA=25℃ 1.5 1 0.5 Io=10mA,TA=85℃ 0.5 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 0.8 Input Voltage(V) 1.2 1.6 2 2.4 2.8 Input Voltage(V) Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 5 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Typical Performance Characteristics (continued) 2. Output Voltage vs Output Current Vo=0.9V 0.920 0.915 0.905 Output Voltage(V) 0.915 Output Voltage(V) 3. Output Voltage vs Temperature Vo=0.9V, V IN=3.3V V IN=3.3V 0.910 0.905 V IN=2.5 0.900 0.895 Io=500mA Io=10mA 0.885 0.875 0.865 V IN=1.5V 0.895 0.855 0 300 600 900 1200 1500 0 30 Output Current(mA) Vo=1.5V 1.512 120 150 120 150 120 150 1.50 Output Voltage(V) Output Voltage(V) 90 Vo=1.5V, V IN=3.3V 1.52 1.510 1.508 1.506 V IN=3.3V 1.504 1.502 1.500 V IN=2.5V 1.48 Io=10mA Io=500mA 1.46 1.44 1.42 1.498 V IN=2.0V 1.496 1.40 0 300 600 900 1200 1500 0 30 Output Current(mA) Vo=2.5V 2.515 60 90 Temperature(℃) Vo=2.5V, V IN=3.3V 2.55 2.510 2.50 2.505 VIN=3.6V Voltage(V) Output Voltage(V) 60 Temperature(℃) 2.500 2.495 2.490 2.45 Io=10mA Io=500mA 2.40 VIN=3.3V 2.35 2.485 VIN=3.0V 2.480 2.30 0 300 600 900 1200 1500 0 Output Current(mA) 30 60 90 Temperature(℃) Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 6 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Typical Performance Characteristics (continued) 4. Quiescent Current vs Input Voltage Quiescent Current(uA) Quiescent Current(uA) 5. Quiescent Current vs Temperature 90 100 90 80 Io=0mA,TA=25℃ 70 Io=0mA,TA=85℃ 60 50 85 V IN=3.3V 80 V IN=2.5V 75 70 65 40 1.8 2.1 2.4 2.7 3 3.3 3.6 0 30 60 Input Voltage(V) 90 120 150 Temperature(℃) 7. Ground Current vs Input Voltage 6. Ground Current vs Output Current 140 140 V IN=3.3V Ground Current(uA) Ground Current(uA) 120 100 80 V IN=2.5V 60 V IN=2.0V 40 120 Io=1.5A 100 80 60 40 20 0 20 0 300 600 900 1200 1500 1.8 2.1 Output Current(mA) 2.4 2.7 3 3.3 3.6 Input Voltage(V) 9. Dropout Voltage vs Temperature 8. Dropout Voltage vs Output Current 350 450 400 300 Vo=0.9V 250 200 Dropout Voltage Output Current Io=500mA Io=10mA Vo=1.5V 150 Vo=2.5V 100 50 350 Vo=0.9V 300 250 200 150 Vo=2.5V Vo=1.5V 100 50 0 0 0 300 600 900 1200 1500 0 Dropout Voltage(V) 30 60 90 Temperature(℃) 120 150 Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 7 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Typical Performance Characteristics (continued) 11. Load Transient Response 10. Ripple Rejection vs Frequency +0 -10 Vo AC Coupling -20 -30 d B -40 Io=500mA -50 -60 Io=100mA Io DC Coupling -70 Io=1mA -80 10 20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k Hz Vo=0.9V,V IN=2.5V,Vpp=1V Vo=1.5V, V IN=3.3V, Io=10mA to 1.5A +0 -10 Vo AC Coupling -20 -30 d B Io=500mA -40 Io=1mA -50 -60 Io=100mA -70 -80 10 Io DC Coupling 20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k Hz Vo=1.5V,V IN=2.5V,Vpp=1V Vo=1.5V , V IN=3.3V, Io=10mA to 500mA +0 -10 Vo AC Coupling -20 -30 d B Io=500mA -40 Io=1mA -50 -60 Io DC Coupling Io=100mA -70 -80 10 20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k Hz Vo=2.5V,V IN=3.3V,Vpp=0.3V Vo=1.5V , V IN=3.3V, Io=500mA to 1.5A Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 8 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Typical Performance Characteristics (continued) 12. Line Transient Response V IN DC Coupling Vo AC Coupling Vo=1.5V, V IN=2V to 3.3V, Io=1mA Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 9 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Application Information generates is: T h e PA M 3 11 5 f a m i l y o f l o w - d r o p o u t ( L D O ) regulators have several features that allow them to apply to a wide range of applications. The family operates with very low input voltage (1.4V) and low dropout voltage (typically 150mV at full load), making it an efficient stand-alone power supply or post regulator for battery or switch mode power supplies. The 1.5A output current make the PAM3115 family suitable for powering many microprocessors and FPGA supplies. The PAM3115 family also has low output noise (typically 40μVRMS with 2.2μF output capacitor), making it ideal for use in telecom equipment. P D=(V IN-V O)I O. All integrated circuits have a maximum allowable junction temperature (T J max) above which normal operation is not assured. A system designer must design the operating environment so that the operating junction temperature (T J) does not exceed the maximum junction temperature (T J max). The two main environmental variables that a designer can use to improve thermal performance are air flow and external heatsinks. The purpose of this information is to aid the designer in determining the proper operating environment for a linear regulator that is operating at a specific power level. In general, the maximum expected power (P D(max)) consumed by a linear regulator is computed as: External Capacitor Requirements A 2.2μF or larger ceramic input bypass capacitor, connected between V IN and GND and located close to the PAM3115, is required for stability. A 1.0uF minimum value capacitor from V O to GND is also required. To improve transient response, noise rejection, and ripple rejection, an additional 10μF or larger, low ESR capacitor is recommended at the output. A higher-value, low ESR output capacitor may be necessary if large, fast-rise-time load transients are anticipated and the device is located several inches from the power source, especially if the minimum input voltage of 1.4 V is used. PDMAX= (VI (avg)-VO (avg))×IO (avg)+VI (avg)×I (Q ) (1) Where: V I (avg) is the average input voltage. V O(avg) is the average output voltage. I O(avg) is the average output current. I (Q) is the quiescent current. l l l l Regulator Protection For most LDO regulators, the quiescent current is insignificant compared to the average output current; therefore, the term V I(avg) xI (Q) can be neglected. The operating junction temperature is computed by adding the ambient temperature (T A) and the increase in temperature due to the regulator' s power dissipation. The temperature rise is computed by multiplying the maximum expected power dissipation by the sum of the thermal resistances between the junction and the case ( R θJC), the case to heatsink (R θCS), and t h e h e a t s i n k t o a m b i e n t ( R θSA) . T h e r m a l resistances are measures of how effectively an object dissipates heat. Typically, the larger the device, the more surface area available for power dissipation so that the object 's thermal resistance will be lower. The PAM3115 features internal current limiting, thermal protection and short circuit protection. During normal operation, the PAM3115 limits output current to about 3A. When current limiting engages, the output voltage scales back linearly until the over current condition ends. While current limiting is designed to prevent gross device failure, care should be taken not to exceed the power dissipation ratings of the package. If the temperature of the device exceeds 150°C, thermalprotection circuitry will shut down. Once the device has cooled down to approximately 50°C below the high temp trip point, regulator operation resumes. The short circuit current of the PAM3115 is about 1A when its output pin is shorted to ground. Thermal Information The amount of heat that an LDO linear regulator Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 10 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Ordering Information PAM3115 X X X X Output Voltage Number of Pins Package Type Pin Configuration Pin Configuration A Type Package Type Number of Pins Output Voltage B: SOT-223 A: 3 090: 0.9V 1. VIN L: TO-252 C: 8 100: 1.0V 2. GND E: SOP-8 120: 1.2V 3. VOUT 150: 1.5V B Type 180: 1.8V 1. GND 250: 2.5V 2. VIN 280: 2.8V 3. EN 285: 2.85V 4. GND 300: 3.0V 5. PWRGD 330: 3.3V 6. SENSE 7. VOUT 8.GND Please consult PAM sales office or authorized Rep ./ Distributor for output voltage and package type availability . Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 11 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Ordering Information Part Number Output Voltage PAM3115ABA090 0.9V PAM3115ALA090 0.9V PAM3115BEC090 0.9V PAM3115ABA100 1.0V PAM3115ALA100 1.0V PAM3115BEC100 1.0V PAM3115ABA120 1.2V PAM3115ALA120 1.2V PAM3115BEC120 1.2V PAM3115ABA150 1.5V PAM3115ALA150 1.5V PAM3115BEC150 1.5V PAM3115ABA180 1.8V PAM3115ALA180 1.8V PAM3115BEC180 1.8V PAM3115ABA250 2.5V PAM3115ALA250 2.5V PAM3115BEC250 2.5V Package Marking Type P3115Z FATYW P3115Z FATYW P3115Z FATYW P3115Y FATYW P3115Y FATYW P3115Y FATYW P3115B FATYW P3115B FATYW P3115B FATYW P3115C FATYW P3115C FATYW P3115C FATYW P3115E FATYW P3115E FATYW P3115E FATYW P3115G FATYW P3115G FATYW P3115G FATYW Standard Package SOT-223 3,000Units/Tape&Reel TO-252 2,500Units/Tape&Reel SOP-8 2,500Units/Tape&Reel SOT-223 3,000Units/Tape&Reel TO-252 2,500Units/Tape&Reel SOP-8 2,500Units/Tape&Reel SOT-223 3,000Units/Tape&Reel TO-252 2,500Units/Tape&Reel SOP-8 2,500Units/Tape&Reel SOT-223 3,000Units/Tape&Reel TO-252 2,500Units/Tape&Reel SOP-8 2,500Units/Tape&Reel SOT-223 3,000Units/Tape&Reel TO-252 2,500Units/Tape&Reel SOP-8 2,500Units/Tape&Reel SOT-223 3,000Units/Tape&Reel TO-252 2,500Units/Tape&Reel SOP-8 2,500Units/Tape&Reel Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 12 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Ordering Information (continued) Part Number Output Voltage PAM3115ABA280 2.8V PAM3115ALA280 2.8V PAM3115BEC280 2.8V PAM3115ABA285 2.85V PAM3115ALA285 2.85V PAM3115BEC285 2.85V PAM3115ABA300 3.0V PAM3115ALA300 3.0V PAM3115BEC300 3.0V PAM3115ABA330 3.3V PAM3115ALA330 3.3V PAM3115BEC330 3.3V Package Marking Type P3115H FATYW P3115H FATYW P3115H FATYW P3115I FATYW P3115I FATYW P3115I FATYW P3115J FATYW P3115J FATYW P3115J FATYW P3115K FATYW P3115K FATYW P3115K FATYW Standard Package SOT-223 3,000Units/Tape&Reel TO-252 2,500Units/Tape&Reel SOP-8 2,500Units/Tape&Reel SOT-223 3,000Units/Tape&Reel TO-252 2,500Units/Tape&Reel SOP-8 2,500Units/Tape&Reel SOT-223 3,000Units/Tape&Reel TO-252 2,500Units/Tape&Reel SOP-8 2,500Units/Tape&Reel SOT-223 3,000Units/Tape&Reel TO-252 2,500Units/Tape&Reel SOP-8 2,500Units/Tape&Reel Please consult PAM sales office or authorized Rep ./ Distributor for output voltage and package type availability . Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 13 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Outline Dimension SOP-8 Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 14 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Outline Dimension SOT-223 Dimensions(Millimeter) Symbol MIN NOM MAX A 6.70 7.00 7.30 C 2.90 3.00 3.10 D 0.02 0.06 0.10 E 0º 5º 10º I 0.60 0.70 0.80 H 0.25 0.30 0.35 B 13º TYP J 2.30 REF. 1 6.30 6.50 6.70 2 6.30 6.50 6.70 3 3.30 3.50 3.70 4 3.30 3.50 3.70 5 1.40 1.60 1.80 A C l J 3 B D 5 H 1 E 4 2 Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 15 PAM3115 1.5A Low Voltage-Low Dropout CMOS Regulator Outline Dimension To-252 Dimensions(Millimeter) Symbol MIN NOM MAX A 6.40 6.60 6.80 B 5.20 5.35 5.50 C 6.80 7.00 7.20 D 2.20 2.50 2.80 E 2.30 REF. F 0.70 0.80 0.90 S 0.60 0.75 0.90 G 0.50 0.60 0.70 H 2.20 2.30 2.40 J 0.45 0.50 0.55 K 0 0.07 0.15 L 0.90 1.20 1.50 M 5.40 5.60 5.80 R 0.80 1.00 1.20 R D M C A B F S G E Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 16