SPX4041 Precision Micropower 1.24V Shunt Voltage Reference FEATURES APPLICATIONS • Low temperature coefficient 50 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 • Output voltage tolerance ± 0.5% • Constant Current Source • Digital Voltmeter • Power Supply Monitor • Precision Regulators • Battery-Powered Equipment • Instrumentation • Automotive Electronics • Data Acquisition Systems • Energy Management PRODUCT DESCRIPTION The SPX4041 is a two-terminal, temperature compensated, band-gap voltage reference, which provides a fixed 1.24V output for input currents between 500 µA to 5mA. The bandgap voltage (1.24V) is independently laser trimmed from the output voltage to achieve a very low tempco, then the output voltage is laser trimmed to 1.24 volts. This trimming technique and the low tempco (A grade 50 ppm/ °C) thin film resistor process gives a very stable device over the full temperature range. The SPX4041 is available in the subminiature (3mm × 1.3mm) SOT-23, SO-8 surface mount package, or TO-92 package. The operating temperature is -40°C to 85°C. The SPX4041 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 SPX4041 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 Electrical Characteristics at IIN = 1000µA, and TA = +25°C unless otherwise noted. . Boldface limits apply over temperature. SPX4041A2 SPX4041B2 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 1.24 IR=500 µA IR=500 µA 0.1kHz≤f ≤10Hz Note 1 0.1% of VOUT Note 2 0.60 15 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 50 0.5 Min SPX4041A3 Typ Max 0.5 5 15 85 -40 Min SPX4041B3 Typ ±50 ±74 2 0.60 15 50 -40 V ±50 ±74 2 100 0.1 -40 °C Max 30 5 15 85 mV mV Ω µV p-p ppm/°C µSec mA Units 1.24 30 0.1 ±25 ±49 2 100 1.24 0.60 15 V 30 5 15 85 IR=500 µA 0.1kHz≤f ≤10Hz Note 1 0.1% of VOUT Note 2 ±25 ±49 2 30 -40 Parameters 1.24 5 15 85 mV mV Ω µV p-p ppm/°C µSec mA °C Rev. 10/25/00 SPX4041 Note: 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. SPX4041 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. SPX4041 Fixed Shunt Regulator Application SOT-23 The SPX4041 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 SPX4041. 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 SPX4041-x.x is less than 15mA VS RS I O + IL IL VR VO IQ SPX4041 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 SPX4041 DRAWING PACKAGE 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 SPX4041 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 SPX4041 DRAWING PACKAGE 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 SPX4041 ORDERING INFORMATION Ordering No. Temp Coef. SPX4041AN-2 SPX4041AN-3 SPX4041BN-2 SPX4041BN-3 SPX4041AM-2 SPX4041AM-3 SPX4041BM-2 SPX4041BM-3 SPX4041AS-2 SPX4041AS-3 SPX4041BS-2 SPX4041BS-3 100ppm 100ppm 150ppm 150ppm 100ppm 100ppm 150ppm 150ppm 100ppm 100ppm 150ppm 150ppm Output Accuracy 1% 2% 1% 2% 1% 2% 1% 2% 1% 2% 1% 2% Packages 3 Lead TO-92 3 Lead TO-92 3 Lead TO-92 3 Lead TO-92 3 Lead SOT-23 3 Lead SOT-23 3 Lead SOT-23 3 Lead SOT-23 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 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