SPX2931 ® 100mA Low Dropout Voltage Regulator FEATURES ■ 3.3V and 3.5V Versions ■ Output Current in Excess of 100 mA ■ Input-Output Differential is 0.3 at 100mA ■ Mirror-Image Insertion Protection ■ Internal Thermal Protection ■ Available in TO-92 and SOT-89 Packages ■ Improved Version of the Industry Standard LM2931 ■ Reverse Battery, Internal Short Circuit, 20V Reverse Transient and 60V Load Dump Protection ■ Availiable with either 2% or 3% Output Accurancy at 25°C TO-92 (N) 1 2 SOT-89 (M1) 3 1 VOUT 2 3 VIN GND VIN GND VOUT Top View Bottom View Now Available in Lead Free Packaging APPLICATIONS ■ Portable Instrumentation ■ Cordless Telephones ■ Radio Control Systems DESCRIPTION The SPX2931 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 SPX2931 features offers very low quiescent currents (0.4 mA), and very low drop output voltage (50 mV at light load and 300 mV at 100 mA). The SPX2931 is offered in a 3-pin TO-92, and SOT-89 package. TYPICAL APPLICATIONS CIRCUIT VIN VOUT SPX2931 1µF 100µF, C1 Gnd Date: 05/25/04 SPX2931 100mA Low Dropout Voltage Regulator 1 ESR 0.05 to 0.6 ohms © Copyright 2004 Sipex Corporation ABSOLUTE MAXIMUM RATINGS RECOMMENDED OPERATING CONSITIONS 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 ............................................. -0.3 to +30V ESD Rating (note 4) ...................................................................... 2kV Input Voltage Range ........................................................... 3.0 to 26V Operating Junction Temperature Range ..................... -40°C to 125°C TO-92ΘJA ............................................................................... 160°C/W SOT-89ΘJA ............................................................................ 110°C/W ELECTRICAL CHARACTERISTICS at VIN=6V, TA = 25°C, IO = 10 mA, COUT = 100 µF, unless otherwise specified. (Note 1) PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX 3.234 3.300 3.366 3.201 3.300 3.399 3.201 3.300 3.399 3.135 3.300 3.465 3.430 3.500 3.570 3.395 3.500 3.605 3.395 3.500 3.605 3.325 3.500 3.675 UNITS 3.3V Version Output Voltage (Note 2) 4V < VIN <26V, IO = 100 mA over temp. V 3.5V Version Output Voltage (Note 2) 4.5V < VIN < 26V, IO = 100mA Over Temp. V All Voltage Options Long Term Stability Line Regulation 20 9V<VIN<16V, 4.5V<VIN<26V 2.0 4.0 20 10 30 4.0 mV/1000hr 30 mV Load Regulation 5mA<IO< 150mA 14 50 14 50 mV Dropout Voltage IO =10mA IO =150mA 0.05 0.3 0.2 0.6 0.05 0.3 0.2 0.6 V Quiescent Current IO =10mA, 4.5V<VIN<26V -40°C<Tj<85°C IO =150mA, VIN=14V, TJ =25°C 0.4 15 1.0 0.4 15 1.0 Output Noise Voltage 10Hz-100kHz, COUT =100µF 500 500 µVRMS Ripple Rejection FO =120Hz 80 80 dB mA Maximum Operational Input Voltage 26 Maximum Line Transient RL = 500Ω, 100ms 60 70 50 70 V Reverse Polarity Input Voltage, DC VO> -0.3V, RL= 500Ω -15 -30 -15 -30 V Reverse Polarity Input Voltage, Transient 1% Duty Cycle, τ <100ms RL=500Ω -50 -80 -50 -80 V 26 V NOTES: Note 1: See TYPICAL APLICATIONS notes to ensure constant junction temperature, low duty cycle pulse testing used. Note 2: All limits are at 25°C or over the full operationg junction temperature range of -40°C to +125°C. Note 3: The maximum power dissipation is a function of maximum junction temperature, total thermal resistance, and ambient temperature. Note 4: Human body model, 100pF discharged through 1.5kΩ. Date: 05/25/04 SPX2931 100mA Low Dropout Voltage Regulator 2 © Copyright 2004 Sipex Corporation TYPICAL PERFORMANCE CHARACTERISTICS 25 30 V IN = 14V IO= 100mA 20 25 QUIESCENT CURRENT (mA) QUIESCENT CURRENT (mA) 15 10 ~ ~ ~ ~ 6 I O = 50mA 4 2 20 15 10 I O = 0mA 0 5 0 -40 80 40 0 0 120 Figure 1. Quiescent Current Figure 2. Quiescent Current 0.6 0.6 0.5 0.5 0.4 INPUT OUTPUT DIFFERENTIAL (V) INPUT OUTPUT DIFFERENTIAL (V) 90 60 30 OUTPUT CURRENT (mA) JUNCTION TEMPERATURE (°C) I O = 100mA 0.3 I O = 50mA 0.2 I O = 10mA 0.1 0.4 0.3 0.2 0.1 0 0 0 40 80 0 120 100 50 OUTPUT CURRENT (mA) JUNCTION TEMPERATURE (ºC) Figure 3. Dropout Voltage Figure 4. Dropout Voltage 6.0 800 SPX2931 3.5 IO = 100 mA 5.0 T J = 25ºC 400 OUTPUT VOLTAGE (V) OUTPUT CURRENT (mA) 500 T J = 85ºC 300 T J = -40ºC 200 4.0 3.0 2.0 100 0 1.0 0 10 20 30 2.0 INPUT VOLTAGE (V) 4.0 5.0 6.0 INPUT VOLTAGE (V) Figure 5. Peak Output Current Date: 05/25/04 3.0 Figure 6. Low Voltage Behavior SPX2931 100mA Low Dropout Voltage Regulator 3 © Copyright 2004 Sipex Corporation TYPICAL PERFORMANCE CHARACTERISTICS 1.0 2.0 0.9 POWER DISSIPATION (W) POWER DISSIPATION (W) 0.8 1.6 1.2 0.8 0.4 0.7 0.6 0.125" LEAD LENGTH FROM PC BOARD 0.5 0.4 0.4" LENGTH FROM PC BOARD 0.3 0.2 0.1 0.0 0 10 20 30 40 50 60 70 80 90 0 0 10 20 30 40 50 60 70 80 90 AMBIENT TEMPERATURE (ºC) AMBIENT TEMPERATURE (ºC) Figure 7. Maximum Power Dissipation (SOT89) OPERATION DURING LOAD DUMP OUTPUT VOLTAGE (V) LM29315.0 I O = 10mA 1 0.1 OUTPUT VOLTAGE (V) OUTPUT IMPEDANCE ( Ω) 10 Figure 8. Maximum Power Dissipation (TO-92) 0.01 0 30 60 90 120 70 60 50 40 30 20 10 0 ~~ 6 4 2 0 -2 -100 150 FREQUENCY (Hz) 0 100 200 300 400 500 TIME (ms) Figure 9. Output Impedance Figure 10. Operation During Load Dump APPLICATION INFORMATION The SPX2931 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 bench testing is the only means to determine the proper capacitor type and value. The high quality 100°F aluminum electrolytic covers all general application circuits, this stability can be obtained with a tantalum electrolytic value of 47°F. Date: 05/25/04 ~~ C O = 100µF R L = 500 Ω Another critical point of electrolytic characteristics is its performance over temperature. The SPX2931 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. SPX2931 100mA Low Dropout Voltage Regulator 4 © Copyright 2004 Sipex Corporation TYPICAL PERFORMANCE CHARACTERISTICS In most applications the SPX2931 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 100 mA. 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. PACKAGE PINOUTS TO-92 (N) 1 2 SOT-89 (M1) 3 1 VOUT 3 VIN GND VIN GND Bottom View Date: 05/25/04 2 VOUT Top View SPX2931 100mA Low Dropout Voltage Regulator 5 © Copyright 2004 Sipex Corporation PACKAGE: 3PIN TO-92 L e1 e W D A b S1 3 PIN TO-92 SYMBOL A b E e e1 L R S1 W D a DIMENSIONS IN INCHES MIN NOM .170 .014 .130 .095 .045 .500 .085 .045 .016 .175 4º - MAX R .195 .020 .155 .105 .055 .610 .095 .060 0.022 E .195 6º a(2x) 3 PIN TO-92 Date: 05/25/04 SPX2931 100mA Low Dropout Voltage Regulator 6 © Copyright 2004 Sipex Corporation PACKAGE: 3PIN SOT-89 D D1 3 Ø1.0 H E 5º(2x) L 1 2 e e1 C Dimensions in (mm) 3 PIN SOT-89 MIN A b L 1.40 0.36 NOM MAX 1.50 0.42 0.80 - 1.60 1.20 b1 0.41 0.47 0.53 C 0.38 0.40 0.43 D 4.40 4.50 4.60 1.60 1.75 D1 1.40 8º(2x) 0.48 H 3.94 - 4.25 E 2.40 2.50 2.60 e 1.45 1.50 1.55 e1 2.90 3.00 3.10 Ro.15 b b1 b 3 PIN SOT-89 Date: 05/25/04 SPX2931 100mA Low Dropout Voltage Regulator 7 © Copyright 2004 Sipex Corporation ORDERING INFORMATION PART NUMBER SPX2931AM1-3.3 SPX2931AM1-3.3/TR SPX2931AM1-3.5 SPX2931AM1-3.5/TR SPX2931AN-3.3 SPX2931AN-3.3/TR SPX2931AN-3.5 SPX2931AN-3.5/TR SPX2931M1-3.3 SPX2931M1-3.3/TR SPX2931M1-3.5 SPX2931M1-3.5/TR SPX2931N-3.3 SPX2931N-3.3/TR SPX2931N-3.5 SPX2931N-3.5/TR ACC. OUTPUT VOLTAGE 2% 2% 2% 2% 2% 2% 2% 2% 3% 3% 3% 3% 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 PACKAGE 3 lead SOT-89 3 lead SOT-89 3 lead SOT-89 3 lead SOT-89 3 lead TO-92 3 lead TO-92 3 lead TO-92 3 lead TO-92 3 Lead SOT-89 3 Lead SOT-89 3 Lead SOT-89 3 Lead SOT-89 3 Lead TO-92 3 Lead TO-92 3 Lead TO-92 3 Lead TO-92 Available in lead free packaging. To order add "-L" suffix to part number. Example: SPX2931AN-3.3/TR = standard; SPX2931AN-L-3.3/TR = lead free /TR = Tape and Reel Pack quantity is 2,000 for TO-92 and 2,500 for SOT-89. 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: 05/25/04 SPX2931 100mA Low Dropout Voltage Regulator 8 © Copyright 2004 Sipex Corporation