A Product Line of Diodes Incorporated ZRC250 PRECISION 2.5 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE Description Pin Assignments The ZRC250 uses a bandgap circuit design to achieve a precision micropower voltage reference of 2.5 volts. The device is available in a small outline surface mount package, ideal for applications where space saving is important, as well as a package for through hole requirements. SOT23 Package Suffix - F VR 3 1 The ZRC250 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRC250 is recommended for operation between 20A and 5mA and so is ideally suited to low power and battery powered applications. GND 2 (Top View) Pin 1 floating or connected to pin 2 Excellent performance is maintained to an absolute maximum of 25mA, however the rugged design and 20 volt processing allows the reference to withstand transient effects and currents up to 200mA. Superior switching capability allows the device to reach stable operating conditions in only a few microseconds. Features * * * * * * * * * * Typical Application Circuit Small outline SOT23 package No stabilizing capacitor required Low knee current, 15A typical Typical TC 30ppm/C Typical slope resistance 0.4 3, 2 and 1% tolerance Industrial temperature range Operating current 20A to 5mA Transient response, stable in less than 10s Green molding compound (No Br, Sb) Applications * * * Battery powered and portable equipment. Instrumentation. Test equipment. ZRC250 Document number: DS32182 Rev. 6 - 2 1 of 5 www.diodes.com March 2012 (c) Diodes Incorporated A Product Line of Diodes Incorporated ZRC250 PRECISION 2.5 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated) Parameter Rating Unit Reverse Current 25 mA Forward Current 25 mA Operating Temperature -40 to 85 C Storage Temperature -55 to 125 C 330 mW Power Dissipation (TAMB = 25C) SOT23 Electrical Characteristics (Test conditions: TAMB = 25C, unless otherwise specified.) Symbol Parameter VR Reverse breakdown voltage IMIN Minimum operating current IR Average reverse breakdown voltage temperature coefficient () Slope resistance RS IR = 150A Recommended operating current (*) TC Condition Min. Typ. Max. Tol. (%) Unit 2.475 2.45 2.425 2.5 2.5 2.5 2.525 2.55 2.575 1 2 3 V 13 20 A 5 mA 30 90 ppm/C 0.4 1 0.8 0.02 IR(MIN) to IR(MAX) ZR Reverse dynamic impedance IR = 1mA f = 100Hz IAC = 0.1IR 0.3 EN Wideband noise voltage IR = 150A f = 10Hz to 10kHz 60 V(rms) Note: (VR(MAX) - VR(MIN))x1000000 VR x (T(MAX ) - T(MIN)) Note: VR(MAX) - VR(MIN) is the maximum deviation in reference voltage measured over the full operating temperature range () RS = ( VR Change IR(MIN) to IR(MAX ) IR(MAX) - IR(MIN) ) REVERSE CURRENT (A) (*) TC = 40 30 20 T A = 25C 10 0 0.0 ZRC250 Document number: DS32182 Rev. 6 - 2 2 of 5 www.diodes.com 1.0 2.0 REVERSE VOLTAGE (V) Reverse Characteristics 3.0 March 2012 (c) Diodes Incorporated A Product Line of Diodes Incorporated ZRC250 PRECISION 2.5 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE Typical Characteristics 1.4 2.51 REFERENCE VOLTAGE (V) FORWARD VOLTAGE (V) 1.2 1.0 0.8 0.6 0.4 2.50 2.49 2.48 0.2 2.47 0.0 0.001 0.01 0.1 1 10 -40 100 -20 0 20 40 60 TEMPERATURE (C) Temperature Drift FORWARD CURRENT (mA) Forward Characteristics 80 1000 1.4 SLOPE RESISTANCE () SLOPE RESISTANCE () IR = 150A 1.2 T A = 85C 1.0 TA = 25C 0.8 0.6 0.4 0.2 10 IR = 5mA 1 TA = -40C 0.0 0.1 1 10 REFERENCE CURRENT (mA) Slope Resistance vs. Current 0.1 10 100 10 1K 10K FREQUENCY (KHz) Slope Resistance vs. Frequency 100K 10 VR (V) 10 VR (V) IR = 1mA 100 0 IR = 5mA 0 2 2 IR = 5mA IR = 150A 1 VIN (V) VIN (V) 1 IR = 150A 0 0 4 8 12 TIME (s) Transient Response (SIngle Pulse) ZRC250 Document number: DS32182 Rev. 6 - 2 0 0 16 3 of 5 www.diodes.com 4 8 12 TIME (s) Transient Response (Repetitive Pulse) 16 March 2012 (c) Diodes Incorporated A Product Line of Diodes Incorporated ZRC250 PRECISION 2.5 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE Ordering Information* Order Reference Tol (%) Package Device Mark Reel Size (inches) Quantity per reel Tape Width (mm) ZRC250F01TA 1 SOT23 25J 7 3000 8 ZRC250F02TA 2 SOT23 25H 7 3000 8 ZRC250F03TA 3 SOT23 25G 7 3000 8 Notes: *All ZRC250A variants (E-Line) are obsolete no longer available for sale. The closest alternative is the SOT23. Package Outline Dimensions SOT23 A B C H K M K1 D J F L G SOT23 Dim Min Max Typ A 0.37 0.51 0.40 B 1.20 1.40 1.30 C 2.30 2.50 2.40 D 0.89 1.03 0.915 F 0.45 0.60 0.535 G 1.78 2.05 1.83 H 2.80 3.00 2.90 J 0.013 0.10 0.05 K 0.903 1.10 1.00 K1 0.400 L 0.45 0.61 0.55 M 0.085 0.18 0.11 0 8 All Dimensions in mm Suggested Pad Layout SOT23 Y Z C X ZRC250 Document number: DS32182 Rev. 6 - 2 Dimensions Value (in mm) Z 2.9 X 0.8 Y 0.9 2.0 C 1.35 E E 4 of 5 www.diodes.com March 2012 (c) Diodes Incorporated A Product Line of Diodes Incorporated ZRC250 PRECISION 2.5 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 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Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systemsrelated information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright (c) 2012, Diodes Incorporated www.diodes.com ZRC250 Document number: DS32182 Rev. 6 - 2 5 of 5 www.diodes.com March 2012 (c) Diodes Incorporated