SPX4040 Precision Micropower 2.5V Shunt Voltage Reference FEATURES APPLICATIONS • Low temperature coefficient 100 ppm/°C • Operating current range 100µA to 15 mA • Low power, 250 mW @ Iin=100 mA • Two terminal "Zener" operation • Small package: SOT - 23, TO-92, and SO-8 • Fixed reverse breakdown voltage 2.5 Volt • No output capacitance required • Similar replacement for LM4040 • Constant Current Source • Digital Voltmeter • Power Supply Monitor • Precision Regulators • Battery-Powered Equipment • Instrumentation • Automotive Electronics • Data Acquisition Systems • Energy Management PRODUCT DESCRIPTION The SPX4040 is a two-terminal, temperature compensated, band-gap voltage reference, which provides a fixed 2.5V output for input currents between 100 µA to 15mA. The bandgap voltage (2.5V) is independently trimmed from the output voltage to achieve a very low tempco. This trimming technique process gives a very stable device over the full temperature range (A grade 50 ppm/ °C). The SPX4040 is available in the sub-miniature (3mm × 1.3mm) SOT-23, SO-8 surface mount package, or TO-92 package. The operating temperature is -40°C to 85°C. The SPX4040 advanced design eliminates the need for an external stabilized capacitor while insuring stability with any capacitive load, making them easy to use. PIN CONNECTIONS 8-Pin Surface Mount (S) N/C 1 8 + N/C 2 7 N/C N/C - 3 6 N/C 4 5 N/C TO-92 (N) SOT-23-3 (M) + 1 2 2 3 1 - Bottom View 3 Top View Top View Rev. 10/25/00 SPX4040 ABSOLUTE MAXIMUM RATINGS Reverse Current................................................................20mA Forward Current ...............................................................10mA Storage Temperature ...................................... -65°C to +150°C Lead Temperature (Soldering) ........................................ 300°C Power Dissipation at 25°C M Package ...................................................... 300mW N Package ....................................................... 550mW S Package........................................................ 525mW Temperature Range ................................... -40°C ≤ TA ≤ +85°C ELECTRICAL CHARACTERISTICS (SPX4040-2.5V) Electrical Characteristics at IIN = 1000µA, and TA = +25°C unless otherwise noted. . Boldface limits apply over temperature SPX4040A2 SPX4040B2 Units Parameters Conditions Min Typ Max Min Typ Max Reverse Breakdown Voltage Reverse Breakdown Tolerance Output Impedance Noise Voltage Tempco Turn-on Setting Operating Current Range Temp. Range 2.500 IR=500 µA IR=500 µA 0.1KHz≤f ≤10Hz Note 1 0.1% of VOUT Note 2 Parameters Conditions Reverse Breakdown Voltage Reverse Breakdown Tolerance Output Impedance Noise Voltage Tempco Turn-on Setting Operating Current Range Temp. Range IR=500 µA 0.60 15 ±25 ±49 2 0.60 15 50 V ±25 ±49 2 100 30 30 0.1 15 0.1 15 -40 85 -40 85 Min SPX4040A3 Typ Max Min 2.500 SPX4040B3 Typ mV mV Ω µV p-p ppm/°C µSec mA °C Units Max 2.500 V 0.1 15 0.1 15 mV mV Ω µV p-p ppm/°C µSec mA -40 85 -40 85 °C IR=500 µA 0.1KHz≤f ≤10Hz Note 1 0.1% of VOUT Note 2 2.500 0.60 15 ±50 ±74 2 0.60 15 50 ±50 ±74 2 100 30 30 Rev. 10/25/00 SPX4040 ELECTRICAL CHARACTERISTICS (SPX4040-5.0V) Electrical Characteristics at IIN = 1000µA, and TA = +25°C unless otherwise noted. . Boldface limits apply over temperature SPX4040A2 SPX4040B2 Units Parameters Conditions Min Typ Max Min Typ Max Reverse Breakdown Voltage Reverse Breakdown Tolerance Output Impedance Noise Voltage Tempco Turn-on Setting Operating Current Range Temp. Range IR=500 µA 0.1KHz≤f ≤10Hz Note 1 0.1% of VOUT Note 2 Parameters Conditions Reverse Breakdown Voltage Reverse Breakdown Tolerance Output Impedance Noise Voltage Tempco Turn-on Setting Operating Current Range Temp. Range IR=500 µA Note: 5.000 IR=500 µA 0.60 15 ±50 ±98 2 0.60 15 50 V ±50 ±98 2 100 30 30 0.175 15 0.175 15 -40 85 -40 85 Min SPX4040A3 Typ Max Min 5.000 SPX4040B3 Typ mV mV Ω µV p-p ppm/°C µSec mA °C Units Max 5.000 V 0.175 15 0.175 15 mV mV Ω µV p-p ppm/°C µSec mA -40 85 -40 85 °C IR=500 µA 0.1KHz≤f ≤10Hz Note 1 0.1% of VOUT Note 2 5.000 0.60 15 ±100 ±148 2 0.60 15 50 ±100 ±148 2 100 30 30 1) Three-point measurement guarantees the error band over the specified temperature range. 2) Optimum performance is obtained at currents below 1000 µA. 3) Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation using statistical quality control. Rev. 10/25/00 SPX4040 SPX4040 Applications Hints This device is designed for stable operation and has no need of an external capacitor between pin 4 and 8. The reference remains stable if a bypass capacitor is used. Figure 1. SPX4040 Fixed Shunt Regulator Application SOT-23 The SPX4040 in the SOT-23 package has a parasitic Schottky diode between pin 3 and pin 1. Pin 1 of SOT-23 must float or be connected to pin 3. Conventional Shunt Regulator In a conventional shunt regulator application (see Figure 1), an external series resister (RS) is connected between the supply voltage and the SPX4040. RS determines the current that flows through the load (IL) and the reference(IQ). Since load current and supply voltage may vary, RS should be small enough to supply at least the minimum acceptable IQ to the reference even when the supply voltage is at its minimum and the load current is at its maximum value. When the supply voltage is at its maximum and IL is at its minimum, RS should be large enough so that the current flowing through the SPX4040 is less than 15mA VS RS I O + IL IL VR SPX4040 VO IQ RS is determined by the supply voltage (VS), the load and operating current (IL and IQ), reference’s reverse breakdown voltage (VR). RS = (VS - VR)/(IL+IQ) Rev. 10/25/00 SPX4040 PACKAGE DRAWING 8-PIN SOIC (S) 4.0 (0.158) 3.8 (0.150) 5.2 (0.205) 4.6 (0.181) 6.2 (0.244) 5.8 (0.228) Pin 1 1.27 (0.50) BSC 1.75 (0.069) 1.35 (0.053) 0.78 (0.031) 0.61 (0.024) 5.0 (0.197) 4.8 (0.188) 0.37 (0.015) BSC 45° 0.77 (0.030) 0.64 (0.025) 7 °(4 PLCS) 3°-6° 0.56 (0.022) 0.49 (0.019) 0.45 (0.018) 0.35 (0.014) 0.20 (0.008) 0.10 (0.004) 0.22 (0.009) 0.19 (0.007) 7 °(4 PLCS) Rev. 10/25/00 SPX4040 DRAWING PACKAGE SOT-23-3L (M) 0.015 - 0.018 (0.381 - 0.457) 0.047 - 0.055 0.083 - 0.098 (1.194 - 1.397) (2.108 - 2.489) 0.035 - 0.040 (0.889 - 1.016) 0.020 - 0.024 (0.508 - 0.610) 0.070 - 0.080 (1.778 - 2.032) 0.110 - 0.120 (2.794 - 3.048) 0.001 - 0.004 (0.025 - 0.102) 0.003 - 0.005 (0.076 - 0.127) 0.030 - 0.041 (0.762 - 1.041) 0.018 - 0.024 (0.457 - 0.610) Rev. 10/25/00 SPX4040 PACKAGE DRAWING TO-92 (N) 0.090 (2.286) Radius typ. 2 1 3 0.145 (3.683) 0.135 (3.429) 0.055 (1.397) 0.045 (1.143) 10° typ. BOTTOM VIEW 0.185 (4.699) 0.045 (1.143) 0.085 (2.159) Diameter 5° typ. 0.185 (4.699) 0.175 (4.445) 0.090 (2.286) typ. 5° typ. Seating Plane 0.025 (0.635) Max Uncontrolled Lead Diameter 0.500 (12.70) Min. 0.016 (0.406) 0.014 (0.356) 0.0155 (0.3937) 0.0145 (0.3683) 0.055 (1.397) 0.045 (1.143) 0.105 (2.667) 0.095 (2.413) Rev. 10/25/00 SPX4040 ORDERING INFORMATION Ordering No. Temp Coef Output Accuracy Reverse Breakdown Voltage 100ppm 100ppm 150ppm 150ppm 100ppm 100ppm 150ppm 150ppm 100ppm 100ppm 150ppm 150ppm 100ppm 100ppm 150ppm 150ppm 100ppm 100ppm 150ppm 150ppm 100ppm 100ppm 150ppm 150ppm 1% 1% 1% 1% 2% 2% 2% 2% 1% 1% 1% 1% 2% 2% 2% 2% 1% 1% 1% 1% 2% 2% 2% 2% 2.5V 5.0V 2.5V 5.0V 2.5V 5.0V 2.5V 5.0V 2.5V 5.0V 2.5V 5.0V 2.5V 5.0V 2.5V 5.0V 2.5V 5.0V 2.5V 5.0V 2.5V 5.0V 2.5V 5.0V SPX4040A2N-2.5 SPX4040A2N-5.0 SPX4040B2N-2.5 SPX4040B2N-5.0 SPX4040A3N-2.5 SPX4040A3N-5.0 SPX4040B3N-2.5 SPX4040B3N-5.0 SPX4040A2S-2.5 SPX4040A2S-5.0 SPX4040B2S-2.5 SPX4040B2S-5.0 SPX4040A3S-2.5 SPX4040A3S-5.0 SPX4040B3S-2.5 SPX4040B3S-5.0 SPX4040A2M-2.5 SPX4040A2M-5.0 SPX4040B2M-2.5 SPX4040B2M-5.0 SPX4040A3M-2.5 SPX4040A3M-5.0 SPX4040B3M-2.5 SPX4040B3M-5.0 Packages 3 Lead TO-92 3 Lead TO-92 3 Lead TO-92 3 Lead TO-92 3 Lead TO-92 3 Lead TO-92 3 Lead TO-92 3 Lead TO-92 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 3 Lead SOT-23 3 Lead SOT-23 3 Lead SOT-23 3 Lead SOT-23 3 Lead SOT-23 3 Lead SOT-23 3 Lead SOT-23 3 Lead SOT-23 Corporation SIGNAL PROCESSING EXCELLENCE Sipex Corporation Headquarters and Main Offices: 22 Linnell Circle Billerica, MA 01821 TEL: (978) 667-8700 FAX: (978) 670-9001 e-mail: [email protected] 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 935-7600 FAX: (408) 934-7500 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 hereing; neither does it convey any license under its patent rights nor the rights of others. Rev. 10/25/00