SPX1202 Solved by TM 600mA Low Dropout Voltage Regulator FEATURES ■ Guaranteed 600mA Output ■ Three Terminal Adjustable or Fixed 2.5V, 3V and 3.3V ■ Low Quiescent Current ■ Low Dropout Voltage of 1.1V at Full Load ■ 0.2% Line and 0.3% Load Regulation ■ Voltage Temperature Stability 0.05% ■ Overcurrent and Thermal Protection ■ Available Packages: SOT-223,TO-252, TO-220, and TO-263 APPLICATIONS ■ SCSI-II Active Terminator ■ Portable/ Palm Top / Notebook Computers ■ Battery Chargers ■ Disk Drives Available in LeadEquipment Free Packaging ■ Portable Consumer ■ Portable Instrumentation ■ SMPS Post-Regulator Now Available in Lead Free Packaging Refer to page 6 for pinouts. DESCRIPTION The SPX1202 is a low power positive-voltage regulator designed to satisfy moderate power requirements with a cost effective, small footprint solution. This device is an excellent choice for use in battery-powered applications and portable computers. The SPX1202 features very low quiescent current and a low dropout voltage of 1.1V at a full load. As output current decreases, quiescent current flows into the load, increasing efficiency. SPX1202 is available in adjustable or fixed 2.5V, 3V and 3.3V output voltages. The SPX1202 is offered in several 3-pin surface mount packages: SOT-223, TO-252, TO-220 and TO-263. An output capacitor of 10F provides unconditional stability while a smaller 2.2F capacitor is sufficient for most applications. BLOCK DIAGRAM VIN + Current Limit VOUT ICL AMP VREF Thermal Limit ADJ/GND IADJ ~ –50A I TL Mar13-07 SPX1202 600 mA Low Dropout Linear Regulator © 2007 Sipex Corporation ABSOLUTE MAXIMUM RATINGS Operating Junction Temperature Range ..... -40C to +125C Input Supply Voltage ..................................................... +20V ESD Rating .............................................................. 2kV min Power Dissipation ...................................... Internally Limited Lead Temperature (soldering, 5 seconds) .................. 260C Storage Temperature Range ...................... -65C to +150C ELECTRICAL CHARACTERISTICS at VIN=VOUT + 1.5V, TA = 25C, CIN = COUT = 10F, unless otherwise specified. Limits in Boldface applies over the full operating temperature range. PARAMETER CONDITIONS TYP MIN MAX UNITS IOUT= 10mA, V IN= 5.00V 0 ≤I OUT ≤600mA, 4.50V ≤V IN ≤10V 2.475 2.450 2.500 2.525 2.550 V IOUT= 10mA, V IN= 5.00V 0 ≤I OUT ≤600mA, 4.50V ≤V IN ≤10V 2.970 2.940 3.000 3.030 3.060 V IOUT= 10mA, V IN= 5.00V 0 ≤I OUT ≤600mA, 4.50V ≤V IN ≤10V 3.267 3.234 3.300 3.333 3.366 V Reference Voltage IOUT=10mA, (VIN - VOUT ) = 2V 10≤IOUT≤600mA, 1.4V ≤(VIN-VOUT)≤10V 1.238 1.225 1.250 1.262 1.270 V Output Voltage Temperature Stability (Note 1) 0.05 % Line Regulation 4.50V≤VIN≤12V,V OUT=3.00,IOUT=0 4.80V≤VIN≤12V,V OUT=3.30,IOUT=0 6.50V≤VIN≤12V,V OUT=5.00,IOUT=0 1.00 1.00 1.00 7.00 7.00 10.00 mV Load Regulation 0≤IOUT≤600mA,V IN=4.50V,VOUT=3.00 0≤IOUT≤600mA,V IN=4.80V,VOUT=3.30 0≤IOUT≤600mA,V IN=6.50V,VOUT=5.0 1.00 1.00 1.00 12.00 12.00 15.00 mV Dropout Voltage (Note 2) IL =100mA IL =600mA 1.00 1.05 1.10 1.15 V Quiescent Current 4.25V≤VIN≤6.5V 5.00 10.00 mA Current Limit (VIN-VOUT)=5V .850 1.0 A Thermal Regulation 25C, 30mS Pulse 0.01 0.1 %/W Ripple Rejection fRIPPLE=120Hz, (VIN-VOUT)=3V, VRIPPLE=1VPP 60 75 dB Long Term Stability 125C, 1000Hrs 0.03 % RMS Output Noise % of VOUT, 10Hz≤f≤10kHz 0.003 % Thermal Resistance Junction to Case, at tab 15 C/W 2.5V Version Output Voltage 3.0V Version Output Voltage 3.3V Version Output Voltage All Output Options Adjust Pin Current 50 A NOTES: Note 1: Output temperature coefficient is defined as the worst case voltage change divided by the total temperature range. Note 2: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential at very low values of programmed output voltage, the minimum input supply voltage of 2V ( 2.3V over temperature) must be taken into account. Note 3: Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied excluding load or line regulation effect. Mar13-07 SPX1202 600 mA Low Dropout Linear Regulator © 2007 Sipex Corporation TYPICAL PERFORMANCE CHARACTERISTICS Series 1 Series 2 3.330 Vout (V) Output Voltage (V) Line Regulation at 25C 3.320 3.315 3.310 3.305 3.300 3.295 3.290 3.285 3.280 3.320 3.310 3.300 10 100 4.8 1000 9.8 14.8 Vin (V) Output Current (mA) Figure 1. Load Regulation for SPX1202M3-3.3; VIN=4.8V, COUT=2.2F Figure 2. Line Regulation for SPX1202M3-3.3; VIN=4.8V to 16V, COUT=2.2F Current Limit (A) Dropout Voltage (V) Current Limit VS Temp 2.00 1.3 1.2 1.1 1.0 0.9 100 200 300 400 500 600 700 800 900 1000 Series 1 Series 2 1.50 1.00 0.50 0.00 -50 Output Current (mA) -25 0 25 50 75 100 125 Temp (C) Figure 3. Dropout Voltage vs Output Current for SPX1202M3-3.3; VIN=4.89V, COUT=2.2F Figure 4. Current Limit for SP1202M3-3.3; VIN=4.8V, CIN=COUT=1.0F, IOUTpulsed from 10mA to Current Limit 3.340 SCOPE TRACING MISSING Series 1 Series 2 VOUT (V) 2.320 3.300 3.280 3.260 3.240 -50 -30 -10 10 30 50 70 90 110 130 Temp (C) Figure 5. Current Limit for SPX1202M3-3.3, Output Voltage Deviation with IOUT=10mA to 1A Step. Mar13-07 Figure 6. VOUTvs Temperature I OUTpilsed from 10mA to Current Limit SPX1202 600 mA Low Dropout Linear Regulator © 2007 Sipex Corporation APPLICATION INFORMATION 50 X 50mm Output Capacitor To ensure the stability of the SPX1202, an output capacitor of at least 10F (tantalum or ceramic)or 50F (aluminum) is required. The value may change based on the application requirements of the output load or temperature range. The value of ESR can vary based on the type of capacitor used in the applications. The recommended value for ESR is 0.5Ω or less. A larger value of output capacitance (up to 100F) can improve the load transient response. 35 X 17mm 16 X 10mm Figure 7. Substrate Layout for SOT-223 in the application can effect the thermal resistance of the SPX1202. The actual thermal resistance can be determined with experimentation. SOLDERING METHODS The SPX1202 SOT-223 package is designed to be compatible with infrared reflow or vaporphase reflow soldering techniques. During soldering, the non-active or mildly active fluxes may be used. The SPX1202 die is attached to the heatsink lead which exits opposite the input, output, and ground pins. SPX1202 power dissipation is calculated as follows: PD= (V IN- V OUT)(IOUT) Maximum Junction Temperature range: Hand soldering and wave soldering should be avoided since these methods can cause damage to the device with excessive thermal gradients on the package. The SOT-223 recommended soldering method are as follows: vapor phase reflow and infrared reflow with the component preheated to within 65C of the soldering temperature range TJ= T AMBIENT(max) + P D* (Thermal Resistance) (Junction-to-ambient) Maximum junction temperature must not exceed the 125C. Ripple Rejection Ripple rejection can be improved by adding a capacitor between the ADJ pin and ground as shown in Figure 7. When ADJ pin bypassing is used, the value of the output capacitor required increases to its maximum. If the ADJ pin is not bypassed, the value of the output capacitor can be lowered to 10F for an electrolytic aluminum capacitor or 2.2F for a solid tantalum capacitor (Fig 10). THERMAL CHARACTERISTICS The thermal resistance of SPX1202 depends on the type of package and PC board layout as shown in Table 1. The SPX1202 features the internal thermal limiting to protect the device during overload conditions. Special care needs to be taken during continuous load conditions such that the maximum junction temperature does not exceed 125C. Thermal protection is activated at >144C and deactiviated at <137C. However the value of the ADJ-bypass capacitor should be chosen with respect to the following equation: C = 1 / ( 6.28 * FR* R 1) Taking the FR-4 printed circuit board and 1/16 thick with 1 ounce copper foil as an experiment, the PCB material is effective at transmitting heat with the tab attached to the pad area and a ground plane layer on the backside of the substrate. Refer to table 1 for the results of the experiment. The thermal interaction from other components Mar13-07 Where C = value of the capacitor in Farads (select an equal or larger standard value), FR= ripple frequency in Hz, R1= value of resistor R 1in Ohms. If an ADJ-bypass capacitor is used, the ampli- SPX1202 600 mA Low Dropout Linear Regulator © 2007 Sipex Corporation tude of the output ripple will be independent of the output voltage. If an ADJ-bypass capacitor is not used, the output ripple will be proportional to the ratio of the output voltage to the reference voltage: The output of the adjustable regulator can be set to any voltage between 1.25V and 15V. The value of VOUT can be quickly approximated using the formula. (Figure 9) VOUT=1.25 *(R1+ R 2)/R1. M = VOUT/ V REF A small correction to this formula is required depending on the values of resistors R1 and R2, since adjustable pin current (approx 50A) flows through R2. When IADJ is taken into account, the formula becomes Where M = multiplier for the ripple seen when the ADJ pin is optimally bypassed. VREF=1.25V Output Voltage VOUT= V REF(1+ (R2/R1)) + IADJ* R 2, where VREF=1.25V. PC BOARD AREA mm2 TOPSIDE COPPER AREA mm2 2500 2500 2500 2500 2500 1600 2500 2500 1600 900 900 2500 1250 950 2500 1800 600 1250 915 600 240 240 BACKSIDE COPPER AREA mm2 THERMAL RESISTANCE JUNCTION TO AMBIENT C/W 2500 2500 2500 0 0 1600 0 0 0 900 0 46 47 49 51 53 55 58 59 67 72 85 Table 1 TYPICAL APPLICATIONS V IN IN 4.7F + SPX1202 VIN OUT C1 IOUT= VREF R1 ADJ I ADJ 50A R1 IOUT VOUT = V REF (1+R 2 /R1 ) +I ADJR LOAD Figure 8. 600mA Current Source Mar13-07 SPX1202 4.7F + C1 C2 ADJ IN VOUT OUT VREF R 1 C2 R2 2 Figure 9. Typical Adjustable Regulator SPX1202 600 mA Low Dropout Linear Regulator © 2007 Sipex Corporation (Note A) V IN 4.7F SPX1202 IN OUT SPX1202 5V + ADJ V IN (Note A) VOUT + 1kΩ, 1% Note A: VIN(MIN) = (Intended VOUT ) + (V 1kΩ 1% + + 4.7F 10F 1k TTL Input 10F *C 1 improves ripple rejection. ZCshould be ~ R1 at ripple frequency 5V ADJ R1 R2 330Ω 1% OUT IN 2N3904 C1 10F* 330Ω 1% 1k Note A: VIN(MIN)= (Intended V OUT ) + (VDROPOUT (MAX) ) DROPOUT (MAX)) Figure 10. Improving Ripple Rejection Figure 11. 5V Regulator with Shutdown LAYOUT CONSIDERATIONS Parasitic line resistance can degrade load regulation. In order not to affect the behavior of the regulator, it is best to connect R1 to the case as illustrated in Figure 12. For the same reason, R2 should be connected to the negative side of the load. R PParasitic Line Resistance V IN V OUT SPX1202 Connect R 1 to Case of Regulator ADJ R1 RL R2 Connect R 2 to Load Figure 12. Recommended Connections for Best Results PACKAGE PINOUTS SOT-223 (M3) 1 2 3 TO-252 (R) 1 2 TO-220-3 (U) 3 1 1 ADJ/GND V OUT Top View V IN ADJ/GND V OUT TO-263-3 (T) 2 3 V IN ADJ/GND Front View 2 3 ADJ/GND V OUT V IN Top View V OUT V IN Front View Mar13-07 SPX1202 600 mA Low Dropout Linear Regulator © 2007 Sipex Corporation Package: 3 pin SOT-23 Mar13-07 SPX1202 600 mA Low Dropout Linear Regulator © 2007 Sipex Corporation Package: 3 pin TO-252 Mar13-07 SPX1202 600 mA Low Dropout Linear Regulator © 2007 Sipex Corporation Package: 3 pin TO-220 Mar13-07 SPX1202 600 mA Low Dropout Linear Regulator © 2007 Sipex Corporation Package: 3 pin TO-263 Mar13-07 SPX1202 600 mA Low Dropout Linear Regulator 10 © 2007 Sipex Corporation ORDERING INFORMATION Part Number SPX1202M3 SPX1202M3/TR SPX1202M3-2-5 SPX1202M3-2-5/TR SPX1202M3-3-0 SPX1202M3-3-0/TR SPX1202M3-3-3 SPX1202M3-3-3/TR SPX1202M3-L SPX1202M3-L/TR SPX1202M3-L-2-5 SPX1202M3-L-2-5/TR SPX1202M3-L-3-0 SPX1202M3-L-3-0/TR SPX1202M3-L-3-3 SPX1202M3-L-3-3/TR SPX1202R SPX1202R/TR SPX1202R-2-5 SPX1202R-2-5/TR SPX1202R-3-0 SPX1202R-3-0/TR SPX1202R-3-3 SPX1202R-3-3/TR SPX1202R-L SPX1202R-L/TR SPX1202R-L-2-5 SPX1202R-L-2-5/TR SPX1202R-L-3-0 SPX1202R-L-3-0/TR SPX1202R-L-3-3 SPX1202R-L-3-3/TR Mar13-07 Package RoHS StaPack Code tus Quantity SOT-223-3 OBS Bulk SOT-223-3 OBS 2500 SOT-223-3 OBS Bulk SOT-223-3 OBS 2500 SOT-223-3 OBS Bulk SOT-223-3 OBS 2500 SOT-23-3 EOL Bulk SOT-223-3 OBS 2500 SOT-223-3 ▪ OBS Bulk SOT-223-3 ▪ OBS 2500 SOT-223-3 ▪ EOL Bulk SOT-223-3 ▪ OBS 2500 SOT-223-3 ▪ OBS Bulk SOT-223-3 ▪ OBS 2500 SOT-223-3 ▪ EOL Bulk SOT-223-3 ▪ OBS 2500 TO-252 OBS Bulk TO-252 OBS 2000 TO-252 OBS Bulk TO-252 OBS 2000 TO-252 OBS Bulk TO-252 OBS 2000 TO-252 OBS Bulk TO-252 OBS 2000 TO-252 ▪ OBS Bulk TO-252 ▪ OBS 2000 TO-252 ▪ OBS Bulk TO-252 ▪ OBS 2000 TO-252 ▪ OBS Bulk TO-252 ▪ OBS 2000 TO-252 ▪ OBS Bulk TO-252 ▪ OBS 2000 SPX1202 600 mA Low Dropout Linear Regulator 11 © 2007 Sipex Corporation ORDERING INFORMATION continued Part Number SPX1202T SPX1202T/TR SPX1202T-2-5 SPX1202T-2-5/TR SPX1202T-3-0 SPX1202T-3-0/TR SPX1202T-3-3 SPX1202T-3-3/TR SPX1202T-L SPX1202T-L/TR SPX1202T-L-2-5 SPX1202T-L-2-5/TR SPX1202T-L-3-0 SPX1202T-L-3-0/TR SPX1202T-L-3-3 SPX1202T-L-3-3/TR SPX1202U SPX1202U-2-5 SPX1202U-3-0 SPX1202U-3-3 SPX1202U-L SPX1202U-L-2-5 SPX1202U-L-3-0 SPX1202U-L-3-3 Solved by tm RoHS StaPack tus Quantity OBS Bulk OBS 2000 OBS Bulk OBS 500 OBS Bulk OBS 500 EOL Bulk OBS 500 ▪ OBS Bulk ▪ OBS 500 ▪ OBS Bulk ▪ OBS 500 ▪ OBS Bulk ▪ OBS 500 ▪ OBS Bulk ▪ OBS 500 EOL Bulk OBS Bulk OBS Bulk EOL Bulk ▪ OBS Bulk ▪ OBS Bulk ▪ OBS Bulk ▪ OBS Bulk Sipex Corporation TM Solved by Sipex Package Code TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-220-3 TO-220-3 TO-220-3 TO-220-3 TO-220-3 TO-220-3 TO-220-3 TO-220-3 Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. Mar13-07 SPX1202 600 mA Low Dropout Linear Regulator 12 © 2007 Sipex Corporation