PAM3115ABA285

1.5A Low Voltage-Low Dropout CMOS Regulator K ey Features 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 PAM3115 General Description 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 VIN VOUT VO PAM3115 C IN 4.7uF GND IN CO 2.2uF VIN EN C1 4.7uF GND PAM3115 PWRGD VOUT OUT C2 2.2uF SENSE Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 1 1.5A Low Voltage-Low Dropout CMOS Regulator Block Diagram IN OUT IN OUT PAM3115 OverCurrent Shutdown Thermal Shutdown OverCurrent Shutdown Thermal Shutdown EN R1 AMP AMP R1 R2 R2 GND GND Pin Configuration & Marking Information Top View SOP-8(EPD) 8 7 6 5 P3115 V F AT Y W V: Voltage Code F: Internal Code A: Assembly Code T: Testing Code Y: Year W: Weekly 1 2 3 4 Name GND VIN EN GND PWRGD SENSE VOUT GND Function Ground Input Enable Pin Ground Power Good Sense Output Ground Pin Number 1 2 3 4 5 6 7 8 Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 2 1.5A Low Voltage-Low Dropout CMOS Regulator Pin Configuration & Marking Information (continued) Top View SOT-223 Top View TO-252 PAM3115 P3115 V F AT Y W P3115 V F AT Y W V: Voltage Code F: Internal Code A: Assembly Code T: Testing Code Y: Year W: Weekly 1 2 3 Name VIN GND VOUT 1 2 3 Pin Number 1 2 3 Function Input Ground 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 . 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℃ Maximum Output Current......................P D/(V IN-V O) Storage Temperature..................... -65℃ to 150℃ Maximum Junction Temperature..................150℃ Soldering Temperature.......................300℃, 5sec Recommended Operating Conditions Supply Voltage Range.......................1.4V to 3.6V Operation Temperature Range...........-40℃ to 85℃ Junction Temperature Range.......... -40℃ to 125℃ Thermal Information Parameter Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) Internal Power Dissipation Symbol θJC θJA PD Package SOT-223 TO-252 SOT-223 TO-252 SOT-223 TO-252 Maximum 7 7 160 90 625 1200 Unit ℃/W mW Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 3 1.5A Low Voltage-Low Dropout CMOS Regulator E lectrical Characteristic V IN = V O+0.5V, T A=25 OC, C IN =4.7uF, C O=2.2uF, unless otherwise noted. Parameters Input Voltage Range Output Voltage Accuracy Symbol VIN VO IO=100mA Vo=0.9V IO=500mA Dropout Voltage VDROP IO=1.5A Vo=1.0V 2.5V>Vo≥1.2V Vo≥2.5V Vo=0.9V Vo=1.0V 2.5V>Vo≥1.2V Vo≥2.5V Short Circuit Current Quiescent Current Ground Pin Current ISC IQ IGND Vo < 0.3V Io=0mA 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 Over Temperature Shutdown Over Temperature Hysteresis Temperature Coefficient Power Supply Ripple Rejection Output Noise LDR OTS OTH TC PSRR Vn IO =100mA, VO=1.5V f=100Hz f=1KHz f=10KHz IO=1mA to 1.5A 0.5 150 50 40 55 55 35 40 uVrms dB 2 %/A ℃ ℃ ppm/℃ 0.5 1 %/V Test Conditions MIN Note 1 -2 330 220 50 40 330 220 150 120 1.0 90 150 600 TYP MAX 3.6 2 500 400 200 150 500 400 350 300 A uA uA mV UNITS V % PAM3115 f=10Hz to 100kHz 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 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 1 0.9 PAM3115 Vo = 0 . 9V 1 0.9 Vo=0.9V Output Voltage(V) 0.8 0.7 0.6 0.5 0.4 0.3 0.8 1.2 1.6 2 2.4 Io=1.5A Io=500mA Output Voltage(V) Io=10mA 0.8 0.7 0.6 0.5 0.4 0.3 Io=10mA,TA=85 Io=10mA,TA=25℃ 2.8 3.2 3.6 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 Input Voltage(V) Input Voltage(V) Vo=1.5V 1.7 1.5 Io=10mA 1.7 1.5 Vo=1.5V Output Voltage(V) 1.3 1.1 0.9 0.7 0.5 0.3 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 Input Voltage(V) Io=1.5A Io=500mA Output Voltage(V) 1.3 1.1 0.9 0.7 0.5 0.3 0.8 1.2 1.6 Io=10mA,TA=25℃ Io=10mA,TA=85℃ 2 2.4 2.8 3.2 3.6 Input Voltage(V) 3 2.5 Vo=2.5V 3 2.5 Vo=2.5V Output Voltage(V) Output Voltage(V) Io=10mA 2 1.5 Io=500mA 1 0.5 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 Input Voltage(V) Io=1.5A 2 1.5 1 0.5 0.8 1.2 1.6 2 Io=10mA,TA=25℃ Io=10mA,TA=85℃ 2.4 2.8 3.2 3.6 Input Voltage(V) Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 5 1.5A Low Voltage-Low Dropout CMOS Regulator Typical Performance Characteristics (continued) 2. Output Voltage vs Output Current 0.920 0.915 PAM3115 Vo=0.9V 0.915 0.905 3. Output Voltage vs Temperature Vo=0.9V, V IN=3.3V Output Voltage(V) Output Voltage(V) 0.910 0.905 0.900 V IN=3.3V 0.895 0.885 0.875 0.865 0.855 Io=10mA Io=500mA V IN=2.5 V IN=1.5V 0.895 0 300 600 900 1200 1500 Output Current(mA) 0 30 60 90 120 150 Temperature(℃) 1.52 1.50 1.512 1.510 Vo=1.5V Vo=1.5V, V IN=3.3V Output Voltage(V) 1.508 1.506 1.504 1.502 1.500 1.498 1.496 0 300 600 900 1200 1500 Output Current(mA) V IN=2.0V V IN=2.5V V IN=3.3V Output Voltage(V) 1.48 1.46 1.44 1.42 1.40 0 Io=10mA Io=500mA 30 60 90 Temperature(℃) 120 150 2.515 2.510 Vo=2.5V 2.55 2.50 Vo=2.5V, V IN=3.3V Output Voltage(V) Voltage(V) 2.505 2.500 2.495 2.490 2.485 2.480 0 VIN=3.6V 2.45 2.40 2.35 Io=10mA Io=500mA VIN=3.3V VIN=3.0V 2.30 300 600 900 1200 1500 0 30 Output Current(mA) 60 90 Temperature(℃) 120 150 Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 6 1.5A Low Voltage-Low Dropout CMOS Regulator Typical Performance Characteristics (continued) 4. Quiescent Current vs Input Voltage 100 PAM3115 90 5. Quiescent Current vs Temperature Quiescent Current(uA) 90 80 Io=0mA,TA=25℃ 70 60 50 40 1.8 2.1 2.4 2.7 3 3.3 3.6 Input Voltage(V) Io=0mA,TA=85℃ Quiescent Current(uA) 85 80 75 70 65 0 30 60 90 120 150 Temperature(℃) V IN=2.5V V IN=3.3V 6. Ground Current vs Output Current 140 7. Ground Current vs Input Voltage 140 120 V IN=3.3V Ground Current(uA) 100 80 60 40 20 0 0 300 600 900 1200 1500 Output Current(mA) V IN=2.0V V IN=2.5V Ground Current(uA) 120 100 80 60 40 20 1.8 2.1 2.4 2.7 3 3.3 3.6 Input Voltage(V) Io=10mA Io=500mA Io=1.5A 8. Dropout Voltage vs Output Current 350 300 9. Dropout Voltage vs Temperature 450 400 Output Current 250 200 150 100 50 0 0 300 600 Vo=2.5V Dropout Voltage Vo=0.9V 350 300 250 200 150 100 50 0 Vo=2.5V Vo=1.5V Vo=0.9V Vo=1.5V 900 1200 1500 0 30 Dropout Voltage(V) 60 90 Temperature(℃) 120 150 Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 7 1.5A Low Voltage-Low Dropout CMOS Regulator Typical Performance Characteristics (continued) 10. Ripple Rejection vs Frequency +0 -10 -20 -30 d B -40 PAM3115 11. Load Transient Response Vo AC Coupling Io=500mA -50 -60 -70 Io=100mA Io=1mA -80 10 20 50 100 200 500 1k Hz 2k 5k 10k 20k 50k 100k Io DC Coupling Vo=0.9V,V IN=2.5V,Vpp=1V Vo=1.5V, V IN=3.3V, Io=10mA to 1.5A +0 -10 -20 -30 d B -40 -50 -60 -70 -80 10 Vo AC Coupling Io=500mA Io=1mA Io=100mA Io DC Coupling 1k Hz 2k 5k 10k 20k 50k 100k 20 50 100 200 500 Vo=1.5V,V IN=2.5V,Vpp=1V Vo=1.5V , V IN=3.3V, Io=10mA to 500mA +0 -10 -20 -30 d B Vo AC Coupling Io=500mA -40 -50 -60 Io=1mA Io=100mA -70 -80 10 Io DC Coupling 500 1k Hz 2k 5k 10k 20k 50k 100k 20 50 100 200 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 1.5A Low Voltage-Low Dropout CMOS Regulator Typical Performance Characteristics (continued) 12. Line Transient Response PAM3115 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 1.5A Low Voltage-Low Dropout CMOS Regulator Application Information 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. 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. Regulator Protection 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 generates is: 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: PAM3115 PDMAX= (VI (avg)-VO (avg))×IO (avg)+VI (avg)×I (Q ) (1) l l l l 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. 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. Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 10 1.5A Low Voltage-Low Dropout CMOS Regulator O rdering Information PAM3115 PAM3115 XXXX Output Voltage Number of Pins Package Type Pin Configuration Pin Configuration A Type 1. VIN 2. GND 3. VOUT B Type 1. GND 2. VIN 3. EN 4. GND 5. PWRGD 6. SENSE 7. VOUT 8.GND Package Type B: SOT-223 L: TO-252 E: SOP-8 Number of Pins A: 3 C: 8 Output Voltage 090: 0.9V 100: 1.0V 120: 1.2V 150: 1.5V 180: 1.8V 250: 2.5V 280: 2.8V 285: 2.85V 300: 3.0V 330: 3.3V 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 1.5A Low Voltage-Low Dropout CMOS Regulator O rdering Information Part Number PAM3115ABA090 PAM3115ALA090 PAM3115BEC090 PAM3115ABA100 PAM3115ALA100 PAM3115BEC100 PAM3115ABA120 PAM3115ALA120 PAM3115BEC120 PAM3115ABA150 PAM3115ALA150 PAM3115BEC150 PAM3115ABA180 PAM3115ALA180 PAM3115BEC180 PAM3115ABA250 PAM3115ALA250 PAM3115BEC250 Output Voltage 0.9V 0.9V 0.9V 1.0V 1.0V 1.0V 1.2V 1.2V 1.2V 1.5V 1.5V 1.5V 1.8V 1.8V 1.8V 2.5V 2.5V 2.5V Marking 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 Package Type SOT-223 TO-252 SOP-8 SOT-223 TO-252 SOP-8 SOT-223 TO-252 SOP-8 SOT-223 TO-252 SOP-8 SOT-223 TO-252 SOP-8 SOT-223 TO-252 SOP-8 Standard Package PAM3115 3,000Units/Tape&Reel 2,500Units/Tape&Reel 2,500Units/Tape&Reel 3,000Units/Tape&Reel 2,500Units/Tape&Reel 2,500Units/Tape&Reel 3,000Units/Tape&Reel 2,500Units/Tape&Reel 2,500Units/Tape&Reel 3,000Units/Tape&Reel 2,500Units/Tape&Reel 2,500Units/Tape&Reel 3,000Units/Tape&Reel 2,500Units/Tape&Reel 2,500Units/Tape&Reel 3,000Units/Tape&Reel 2,500Units/Tape&Reel 2,500Units/Tape&Reel Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 12 1.5A Low Voltage-Low Dropout CMOS Regulator O rdering Information (continued) Part Number PAM3115ABA280 PAM3115ALA280 PAM3115BEC280 PAM3115ABA285 PAM3115ALA285 PAM3115BEC285 PAM3115ABA300 PAM3115ALA300 PAM3115BEC300 PAM3115ABA330 PAM3115ALA330 PAM3115BEC330 Output Voltage 2.8V 2.8V 2.8V 2.85V 2.85V 2.85V 3.0V 3.0V 3.0V 3.3V 3.3V 3.3V Marking P3115H FATYW P3115H FATYW P3115H FATYW P3115I FATYW P3115I FATYW P3115I FATYW P3115J FATYW P3115J FATYW P3115J FATYW P3115K FATYW P3115K FATYW P3115K FATYW Package Type SOT-223 TO-252 SOP-8 SOT-223 TO-252 SOP-8 SOT-223 TO-252 SOP-8 SOT-223 TO-252 SOP-8 Standard Package PAM3115 3,000Units/Tape&Reel 2,500Units/Tape&Reel 2,500Units/Tape&Reel 3,000Units/Tape&Reel 2,500Units/Tape&Reel 2,500Units/Tape&Reel 3,000Units/Tape&Reel 2,500Units/Tape&Reel 2,500Units/Tape&Reel 3,000Units/Tape&Reel 2,500Units/Tape&Reel 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 1.5A Low Voltage-Low Dropout CMOS Regulator O utline Dimension SOP-8 PAM3115 Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 14 1.5A Low Voltage-Low Dropout CMOS Regulator O utline Dimension SOT-223 C PAM3115 l J 1 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 3 A B H 5 D E 4 2 Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 15 1.5A Low Voltage-Low Dropout CMOS Regulator O utline Dimension To-252 A B PAM3115 F S G E 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 Power Analog Microelectronics , Inc www.poweranalog.com 08/2007 R D M C 16