Low Dropout Voltage Regulator

www.DataSheet4U.com ® SPX2808 300mA Low Dropout Voltage Regulator FEATURES ■ 3.3V and 3.5V Versions ■ Input-Output Differential is 0.35V at 200mA ■ Input-Output Differential is 0.45V at 300mA ■ Mirror-Image Insertion Protection ■ Internal Thermal Protection ■ Available in SOT-223 and SOT-89 Packages ■ Short Circuit Protection ■ 2% Output Accurancy, SPX2808A APPLICATIONS ■ CD-ROMs ■ Scanners ■ Radio Control Systems ■ ■ ■ ■ SOT-89 (M1) SOT-223 (M3) 1 2 3 1 2 3 VIN GND VOUT VIN GND VOUT Top View Now Available in Lead Free Packaging Portable Instrumentation Cordless Telephones USBs Toys DESCRIPTION The SPX2808 is a low power, positive voltage regulator. This device is an excellent choice for use in battery-powered applications such as cordless telephones, radio control systems, and portable computers. The SPX2808 features offers very low quiescent currents (0.4mA), and very low drop output voltage (50mV at light load and 450mV at 300mA). The SPX2808 is offered in a 3-pin SOT-223 and SOT-89 package. TYPICAL APPLICATIONS CIRCUIT V IN VOUT SPX2808 100µF, 1µF C1 Gnd ESR 0.05 to 0.6 ohms Date: 5/25/04 SPX2808 300mA Low Dropout Voltage Regulator © Copyright 2004 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS Power Dissipation (note 3) ........................................ Internally limited Lead Temp (soldering, 5 seconds) ............................................ 260°C Storage Temperature Range ..................................... -65°C to +150°C Input Supply Voltage Range .......................................... -0.3V to +30V ESD Rating (note 4) ...................................................................... 2kV RECOMMENDED OPERATING CONSITIONS Input Supply Voltage Range ............................................. 3.0V to 26V Operating Junction Temperature Range ....................... -40°C to 85°C SOT-89 ΘJA ............................................................................. 90°C/W SOT-223 ................................................................................. 60°C/W ELECTRICAL CHARACTERISTICS at TA=25°C, unless otherwise specified. (Note 1) PARAMETER 3.3V Version Quiescent Current (IQ) Output Voltage (VOUT) Line Regulation Load Regulation Dropout Voltage (VDROP) IOUT = 0mA, Except ICONT IOUT = 50mA, Except ICONT VIN = 8V, at Output Off IOUT = 40mA, 5 ≤ VIN ≤ 10V IOUT = 1mA→60mA IOUT = 1mA→100mA IOUT = 60mA IOUT = 200mA IOUT = 300mA IOUT when VOUT drops 0.3V from VO (typ)(Note 3) 5 ms pulse, 12.5% duty cycle IOUT = 0mA, Except ICONT IOUT = 50mA, Except ICONT VIN = 8V, at Output Off IOUT = 40mA, 5 ≤ VIN ≤ 10V IOUT = 1mA→60mA IOUT = 1mA→100mA IOUT = 60mA IOUT = 200mA IOUT = 300mA IOUT when VOUT drops 0.3V from VO (typ)(Note 3) 5 ms pulse, 12.5% duty cycle 3.43 100 3.5 0.3 10 30 0.2 0.35 0.45 400 100 300 3.24 CONDITIONS Min Typ SP2808A 100 3.3 0.3 10 30 0.2 0.35 0.45 400 100 300 200 3.57 0.4 40 80 0.3 0.7 3.40 100 3.5 0.3 10 30 0.2 0.35 0.45 400 100 300 200 3.36 0.4 40 80 0.3 0.7 3.20 Max Min Typ SP2808 100 3.3 0.3 10 30 0.2 0.35 0.45 400 100 300 200 3.60 0.4 40 80 0.3 0.7 200 3.40 0.4 40 80 0.3 0.7 µA V %/V mV mV V V V mA ppm/°C mA µA V %/V mV mV V V V mA ppm/°C mA Max Units Continuous Output Current (IOUT) Temperature Coefficient Pulse Output Current 3.5V Version Quiescent Current (IQ) Output Voltage (VOUT) Line Regulation Load Regulation Dropout Voltage (VDROP) Continuous Output Current (IOUT) Temperature Coefficient Pulse Output Current NOTES: Note 1: When mounted as recommended. Derate 11mW/°C for SOT-89 packages when ambient temperatures are over 25°C. Note 2: See TYPICAL APPLICATIONS notes to ensure constant junction temperature, low duty cycle pulse testing used. Note 3: All limits are at 25°C; Boldface limits are over the full operating junction temperature range of -40°C to +85°C. Note 4: The maximum power dissipation is a function of maximum junction temperature, total thermal resistance, and ambient temperature. Note 5: Human body model, 100pF discharged through 1.5kΩ. Date: 5/25/04 SPX2808 300mA Low Dropout Voltage Regulator © Copyright 2004 Sipex Corporation 2 TYPICAL PERFORMANCE CHARACTERISTICS 800 2.0 500 OUTPUT CURRENT (mA) T J = 25ºC 1.6 POWER DISSIPATION (W) 400 300 200 100 0 0 10 T J = 85ºC T J = -40ºC 1.2 0.8 0.4 0.0 20 30 0 10 20 30 40 50 60 70 80 90 AMBIENT TEMPERATURE (ºC) INPUT VOLTAGE (V) Figure 1. Peak Output Current Figure 2. Minimum Power Dissipation (SOT-89) APPLICATION INFORMATION The SPX2808 requires an output capacitor for device stability. The value required varies greatly depending upon the application circuit and other factors. The high frequency characteristics of electrolytic capacitors depend greatly on the type and also on the manufacturer. Sometimes only bench testing is the only means to determine the proper capacitor type and value. The high quality 100µF aluminum electrolytic covers all general application circuits, this stability can be obtained with a tantalum electrolytic value of 47µF. Another critical point of electrolytic characteristics is its performance over temperature. The SPX2808 is designed to operate starting at 40°C which may not be true in the case of electrolytic. Higher temperatures generally no problem. The electrolytic. type in aluminum will freeze around -30°C. This could cause an oscillation at output of regulator. At a lower temperature requirement by many applications the capacitor should maintain its performance. So as a result, for an application which regulator junction temperature does not exceed 25°C, the output capacitor can be reduced by the factor of two over the value needed for the entire temperature range. In most applications the SPX2808 is operating at few milliamps. In these applications the output capacitance can be further reduced. For example, when the regulator is running at 10mA output current the output capacitance value is half compared to the same regulator that is running at 100mA. The value decreases with higher output voltages, since the internal loop gain is reduced. The worst case occurs at the lower temperature and maximum operating currents, the entire circuit and the electrolytic, should be cooled down to the minimum temperature. The minimum of 0.6 volts required at the input of regulator above the output to keep the power dissipation and die heating to its minimum. After the value for the capacitor has been determined for actual use, the value should be doubled. Date: 5/25/04 SPX2808 300mA Low Dropout Voltage Regulator © Copyright 2004 Sipex Corporation 3 PACKAGE: 3 PIN SOT-89 D D1 3 Ø1.0 E H 5º(2x) L 1 e 2 e1 C Dimensions in (mm) 3 PIN SOT-89 MIN A b L b1 C D D1 H E e e1 1.40 0.36 0.80 0.41 0.38 4.40 1.40 3.94 2.40 1.45 2.90 NOM MAX 1.50 0.42 0.47 0.40 4.50 1.60 2.50 1.50 3.00 1.60 0.48 1.20 0.53 0.43 4.60 1.75 4.25 2.60 1.55 3.10 8º(2x) Ro.15 b b1 b 3 PIN SOT-89 Date: 5/25/04 SPX2808 300mA Low Dropout Voltage Regulator © Copyright 2004 Sipex Corporation 4 PACKAGE: 3 PIN SOT-223 C D C N C b2 E E1 See detail A A A1 1 B e b B GAUGE PLANE SEATING PLANE L 0 C H 3 PIN SOT-223 JEDEC TO-261 (AA) Variation A A1 A2 b b2 c D E E1 e e1 L ø Dimensions in (mm) MIN 0.02 1.50 0.66 2.90 0.23 6.30 6.70 3.30 NOM MAX 1.60 0.76 3.00 0.30 6.50 7.00 3.50 1.80 0.10 1.70 0.84 3.10 0.35 6.70 7.30 3.70 c b WITH PLATING c BASE METAL Section B-B 2.30 BASIC 4.60 BASIC 0.75 0º 10º b2 Section C-C 3 PIN SOT-223 Date: 5/25/04 SPX2808 300mA Low Dropout Voltage Regulator © Copyright 2004 Sipex Corporation 5 ORDERING INFORMATION PART NUMBER ACCURACY OUTPUT VOLTAGE PACKAGE SPX2808M1-3.3 SPX2808M1-3.3/TR SPX2808M1-3.5 SPX2808M1-3.5/TR SPX2808M1-3.3 SPX2808M1-3.3/TR SPX2808M1-3.5 SPX2808M1-3.5/TR SPX2808M3-3.3 SPX2808M3-3.3/TR SPX2808M3-3.5 SPX2808M3-3.5/TR SPX2808M3-3.3 SPX2808M3-3.3/TR SPX2808M3-3.5 SPX2808M3-3.5/TR 2% 2% 2% 2% 3% 3% 3% 3% 2% 2% 2% 2% 3% 3% 3% 3% 3.3V 3.3V 3.5V 3.5V 3.3V 3.3V 3.5V 3.5V 3.3V 3.3V 3.5V 3.5V 3.3V 3.3V 3.5V 3.5V 3 lead SOT-89 3 lead SOT-89 3 lead SOT-89 3 lead SOT-89 3 lead SOT-89 3 lead SOT-89 3 lead SOT-89 3 lead SOT-89 3 lead SOT-223 3 lead SOT-223 3 lead SOT-223 3 lead SOT-223 3 lead SOT-223 3 lead SOT-223 3 lead SOT-223 3 lead SOT-223 Available in lead free packaging. To order add “-L” suffix to part number. Example: SPX2808M3-3.5/TR = standard; SPX2808M3-L-3.5/TR = lead free /TR = Tape and Reel Pack quantity is 2,500 for SOT-89 and SOT-223. Corporation ANALOG EXCELLENCE Sipex Corporation 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. Date: 5/25/04 SPX2808 300mA Low Dropout Voltage Regulator © Copyright 2004 Sipex Corporation 6