1.5A LOW VOLTAGE LOW DROPOUT CMOS REGULATOR FSP2161 FEATURES z z z z z z z Low-Dropout Regulator Supports Input Voltages Down to 1.4V Output Voltage Available in 0.9V, 1.0V, 1.2V, 1.5V, 1.8V, 2.5V,2.8V,2.85V,3.0V, 3.3V Stable with a Ceramic Output Capacitor of 1.0uF or Higher Low Dropout Voltage:150mV at 1.5A Low Quiescent Current Over Temperature Shutdown Short Circuit Protection Low Temperature Coefficient Standard TO252 and TO263 Packages APPLICATIONS The FSP2161 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 TO252 and TO263 packages. The fixed output voltage of the FSP2161 is set at the factory and trimmed to ±2%. The FSP2161 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 voltage z z z z z z z z DSP, FPGA, and Microprocessor Power Supplies 1.2V Core Voltage for DSPs SATA Power Supply LCD TV/ Monitors Wireless Devices Communication Devices Portable Electronics Post Regulator for SMPS PIN CONFIGURATION z z 1) TO252 (Top View) TO252 1 2 3 1/12 2) TO263 (Top View) PIN DESCRIPTION Pin Number GENERAL DESCRIPTION TO263 1 3 5 2 4 Pin Name Pin Function VIN GND VOUT EN PWRGD Input Ground Output Enable pin Power good BLOCK DIAGRAM 2007-12-6 1.5A LOW VOLTAGE LOW DROPOUT CMOS REGULATOR FSP2161 TYPICAL APPLICATIONS CIRCUITS ABSOLUTE MAXIMUM RATINGS Parameter Input Supply Voltage Maximum Output Current Rating +4 PD/(VIN-VO) Unit V Output Pin Voltage -0.3 to VIN+0.3 V Internal Power Dissipation 1200 mW Junction to Case Thermal Resistance (θJC) 7 ℃/ W Junction to Ambient Thermal Resistance (θJA) 90 ℃/ W Operating temperature -40 to 85 °C Operating Junction Temperature -40 to 125 °C Storage Temperature -65 to 150 °C Maximum Junction Temperature 150 °C Lead Temperature (Soldering, 5 sec) 300 °C Note: 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. 2/12 RECOMMENDED OPERATING CONDITIONS Parameter Input Supply Voltage Operating temperature Rating 1.4 to 3.6 -40 to 85 Unit V °C Operating Junction Temperature -40 to 125 °C 2007-12-6 1.5A LOW VOLTAGE LOW DROPOUT CMOS REGULATOR FSP2161 ELECTRICAL CHARACTERISTICS (VOUT = VIN + 0.5V, CIN = 1µF, CO = 2.2µF, TA= 25°C unless otherwise specified.) PARAMETER SYMBOL Input Voltage Output Voltage Accuracy Short Circuit Current Ground Current Quiescent Current VIN VO ISC IGND IQ Line Regulation LNR Load Regulation Error Temperature Coefficient Over Temperature Shutdown Over Temperature Hystersis Power Supply Ripple Rejection LDR TC OTS OTH PSRR TEST CONDITIONS MIN IO= 100mA Note1 -2 IO = 100mA Vo =1.5V IO = 500mA Dropout Voltage VDROP IO = 1.5A Output Noise Vn MAX UNIT 3.6 +2 V % A 90 600 150 µA µA 0.5 1 0.5 1 2 1.2V ≤ VO < 2.5V VO ≥ 2.5V 0.5 40 150 50 55 55 35 330 220 50 40 500 400 200 150 VO= 0.9V 330 500 VO= 1.0V 220 400 1.2V ≤ VO < 2.5V 150 350 VO ≥ 2.5V 120 300 VO < 0.3V IO= 1mA to 1.5A IO= 0mA IO= 10mA, VO ≤ 2.5V VIN =VO + 0.5V to VO + 1.5V IO= 10mA, VO＞2.5V VIN = 3.3V to 3.6V IO = 1mA to 1.5A f=100Hz f= 1KHz f= 10KHz VO= 0.9V VO= 1.0V f = 10Hz to 100kHz TYP 1.0 %/V 40 %/A ppm/°C °C °C dB mV µVRMS Note 1：The minimum input voltage of the FSP2161 is determined by output voltage and dropout voltage. The minimum input voltage is defined as: VIN(MIN)=VO+VDROP 3/12 2007-12-6 1.5A LOW VOLTAGE LOW DROPOUT CMOS REGULATOR FSP2161 APPLICATION INFORMATION The FSP2161 family of low-dropout (LDO) 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 FSP2161 family suitable for powering many microprocessors and FPGA supplies. The FSP2161 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 VIN and GND and located close to the FSP2161, is required for stability. A 1.0uF minimum value capacitor from VO 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 FSP2161 features internal current limiting, thermal protection and short circuit protection. During normal operation, the FSP2161 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, thermal-protection 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 FSP2161 is about 1A when its output pin is shorted to ground. Thermal Information The amount of heat that an LDO linear regulator generates is: PD=(VIN-VO)IO. All integrated circuits have a maximum allowable junction temperature (TJ max) above which normal operation is not assured. A system designer must design the operating environment so that the operating junction temperature (TJ) does not exceed the maximum junction temperature (TJ 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 (PD(max)) consumed by a linear regulator is computed as: Where: VI (avg) is the average input voltage. VO(avg) is the average output voltage. IO(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 VI(avg) xI(Q) can be neglected. The operating junction temperature is computed by adding the ambient temperature (TA) 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 (RθJC), the case to heatsink (RθCS), and the heatsink to ambient (RθSA). Thermal 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. 4/12 2007-12-6 1.5A LOW VOLTAGE LOW DROPOUT CMOS REGULATOR 5/12 TYPICAL PERFORMANCE CHARACTERISTICS FSP2161 2007-12-6 1.5A LOW VOLTAGE LOW DROPOUT CMOS REGULATOR FSP2161 6/12 TYPICAL PERFORMANCE CHARACTERISTICS（CONTINUED） 2007-12-6 1.5A LOW VOLTAGE LOW DROPOUT CMOS REGULATOR FSP2161 7/12 TYPICAL PERFORMANCE CHARACTERISTICS（CONTINUED） 2007-12-6 1.5A LOW VOLTAGE LOW DROPOUT CMOS REGULATOR FSP2161 8/12 TYPICAL PERFORMANCE CHARACTERISTICS（CONTINUED） 2007-12-6 1.5A LOW VOLTAGE LOW DROPOUT CMOS REGULATOR FSP2161 ORDERING INFORMATION FSP2161XXXX Package Type: D: TO252 K: TO263 Output Voltage: 33: 3.3V 30: 3.0V 285: 2.85V 28: 2.8V 25: 2.5V 18: 1.8V 15: 1.5V 12: 1.2V 10: 1.0V 09: 0.9V Temperature Grade: Packing: A: Tape & Reel D: -40~85℃ MARKING INFORMATION (1) TO252 (2) TO263 Logo 2161-VV YYWWXX 9/12 Part Number: 2161-09: 0.9V 2161-10: 1.0V 2161-12: 1.2V 2161-15: 1.5V 2161-18: 1.8V 2161-25: 2.5V 2161-28: 2.8V 2161-285: 2.85V 2161-30: 3.0V 2161-33: 3.3V Logo 2161-VV YYWWXX Part Number: 2161-09: 0.9V 2161-10: 1.0V 2161-12: 1.2V 2161-15: 1.5V 2161-18: 1.8V 2161-25: 2.5V 2161-28: 2.8V 2161-285: 2.85V 2161-30: 3.0V 2161-33: 3.3V Internal Code Internal Code Date Code: YY: Year (01=2001) WW: Nth week (01~52) Date Code: YY: Year (01=2001) WW: Nth week (01~52) 2007-12-6 1.5A LOW VOLTAGE LOW DROPOUT CMOS REGULATOR FSP2161 PACKAGE INFORMATION (1) TO252 Symbol A B C D E F S G H J K L M R 10/12 Min. 6.40 5.20 6.80 2.20 0.70 0.60 0.50 2.20 0.45 0 0.90 5.40 0.80 Dimensions In Millimeters Nom. 6.60 5.35 7.00 2.50 2.30REF 0.80 0.75 0.60 2.30 0.50 0.07 1.20 5.60 1.00 Max. 6.80 5.50 7.20 2.80 0.90 0.90 0.70 2.40 0.55 0.15 1.50 5.80 1.20 Dimensions In Inches Nom. 0.264 0.214 0.280 0.100 0.092REF 0.028 0.032 0.024 0.030 0.020 0.024 0.088 0.092 0.018 0.020 0 0.003 0.036 0.048 0.216 0.224 0.032 0.040 Min. 0.256 0.208 0.272 0.088 2007-12-6 Max. 0.272 0.220 0.288 0.112 0.036 0.036 0.028 0.096 0.022 0.006 0.060 0.232 0.048 1.5A LOW VOLTAGE LOW DROPOUT CMOS REGULATOR FSP2161 2) TO263 10.90 E 9.10 L2 D 15.70 L 2.50 1.00 e B 1.70 Land Pattern Recommendation (Unit: mm) A C2 C L1 Symbol A B C C2 D E e L L1 L2 11/12 Min. 4.07 0.51 0.36 1.14 8.20 9.65 1.57 14.45 1.78 Dimensions In Millimeters Nom. Max. 4.46 4.85 0.84 1.02 0.50 0.74 1.27 1.65 9.15 9.65 10.16 10.67 1.71 1.85 15.24 15.88 2.54 2.79 2.92 Min. 0.163 0.020 0.014 0.046 0.328 0.386 0.063 0.578 0.071 Dimensions In Inches Nom. 0.176 0.033 0.020 0.050 0.360 0.400 0.068 0.600 0.100 2007-12-6 Max. 0.194 0.041 0.030 0.066 0.380 0.427 0.074 0.635 0.110 0.115 1.5A LOW VOLTAGE LOW DROPOUT CMOS REGULATOR FSP2161 12/12 2007-12-6