LM4040 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCES Description Pin Assignments The LM4040 is a family of bandgap circuits designed to achieve precision micro-power voltage references of 2.5V, 3.0V and 5.0V. The devices are available in 0.2% B-grade, 0.5% C-grade and 1% Dgrade initial tolerances. (Top View) They are available in small outline SOT23 surface mount packages which are ideal for applications where space is at a premium. Excellent performance is maintained over the 60A to 15mA operating current range with a typical temperature coefficient of only 20ppm/C. The device has been designed to be highly tolerant of capacitive loads so maintaining excellent stability. * Pin 3 must be left floating or connected to pin 2 SOT23 This device offers a pin for pin compatible alternative to the LM4040 voltage reference. Anode 1 Features LM4040 H5 (SC70-5) (Top View) Small Package: SOT23 SC70-5 Variants Are End of Life (EOL) No Output Capacitor Required Output Voltage Tolerance LM4040B 0.2% at +25C LM4040C 0.5% at +25C LM4040D 1% at +25C Low Output Noise (10Hz to 10kHz) .............. 45VRMS * 4 N/C 2 Cathode 3 5 N/C Top View SC70-5** * Pin 2 must be left floating or connected to pin 1 * Pin 2 must be left floating or connected to pin 1. ** SC70-5 variants are End of Life (EOL). Wide Operating Current Range 60A to 15mA Extended Temperature Range -40C to +125C Low Temperature Coefficient 100 ppm/C (max) Green Molding in Small Package SOT23 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. "Green" Device (Note 3) An Automotive-Compliant Part is Available Under Separate Datasheet (LM4040Q) Applications Battery Powered Equipment Precision Power Supplies Portable Instrumentation Portable Communications Devices Notebook and Palmtop Computers Data Acquisition Systems Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated's definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green" products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. LM4040 Document number: DS33195 Rev. 7 - 2 1 of 12 www.diodes.com February 2017 (c) Diodes Incorporated LM4040 Absolute Maximum Ratings (Voltages to Anode Unless Otherwise Stated) Rating Unit Continuous Reverse Current Parameter 20 mA Continuous Forward Current 10 mA Operating Junction Temperature -40 to +150 C Storage Temperature -55 to +150 C Caution: Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only; functional operation of the device at conditions between maximum recommended operating conditions and absolute maximum ratings is not implied. Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time. (Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling and transporting these devices.) Unless otherwise stated voltages specified are relative to the Anode pin. Package Thermal Data Package JA SOT23 380C/W PDIS TA = +25C, TJ = +125C 330mW Recommended Operating Conditions Min Max Unit Reverse Current Parameter 0.06 15 mA Operating Ambient Temperature Range -40 +125 C Electrical Characteristics (Test conditions: TA = +25C, unless otherwise specified.) LM4040-2.5 Symbol VREF IRMIN VR/T VR/IR LM4040 B Limits LM4040 C Limits LM4040 D Limits Unit 2.5 -- -- -- V 5 21 30 60 65 68 -- 100 -- 0.8 1.0 1.0 6.0 8.0 8.0 12 29 38 60 65 68 -- 100 -- 0.8 1.0 1.0 6.0 8.0 8.0 25 49 63 65 70 73 -- 150 -- 1.0 1.2 1.2 8.0 10.0 10.0 ppm/C 0.3 0.8 0.9 1.1 35 -- -- -- VRMS t = 1000Hrs, IR = 100A 120 -- -- -- ppm T = -40C to +125C 0.08 -- -- -- % IR = 100A Reverse Breakdown Voltage Tolerance IR = 100A Minimum Operating Current -- Average Reverse Breakdown Voltage Temperature Coefficient IR = 10mA IR = 1mA IR = 100A Reverse Breakdown Change with Current Dynamic Output Impedance en Noise Voltage VHYST Typ -- Reverse Breakdown Voltage ZR VR Conditions Parameter Long Term Stability (Non Cumulative) Thermal Hysteresis LM4040 Document number: DS33195 Rev. 7 - 2 TA +25C +25C -40 to +85C -40 to +125C +25C -40 to +85C -40 to +125C -40 to +125C +25C -40 to +85C -40 to +125C +25C 1mA IR -40 to +85C 15mA -40 to +125C IR = 1mA, f = 120Hz IAC = 0.1IR IR = 100A 10Hz < f < 10kHz IRMIN IR 1mA -- 45 -- 20 15 15 0.3 -- 2.5 -- 2 of 12 www.diodes.com mV A mV February 2017 (c) Diodes Incorporated LM4040 Electrical Characteristics (Cont.) (Test conditions: TA = +25C, unless otherwise specified.) LM4040-3.0 Symbol VREF IRMIN VR/T VR/IR LM4040 B Limits LM4040 C Limits LM4040 D Limits Unit 3.0 -- -- -- V 6 26 TBD 62 67 70 -- 100 -- 0.8 1.1 1.1 6.0 9.0 9.0 15 34 45 62 67 70 -- 100 -- 0.8 1.1 1.1 6.0 9.0 9.0 30 59 75 67 72 75 -- 150 -- 1.0 1.3 1.3 8.0 11.0 11.0 ppm/C 0.4 0.9 0.9 1.2 35 -- -- -- VRMS t = 1000Hrs, IR = 100A 120 -- -- -- ppm T = -40C to +125C 0.08 -- -- -- % LM4040 C Limits LM4040 D Limits Units V TA IR = 100A Reverse Breakdown Voltage Tolerance IR = 100A Minimum Operating Current -- Average Reverse Breakdown Voltage Temperature Coefficient IR = 10mA IR = 1mA IR = 100A Reverse Breakdown Change with Current Dynamic Output Impedance en Noise Voltage VHYST Typ -- Reverse Breakdown Voltage ZR VR Conditions Parameter Long Term Stability (Non Cumulative) Thermal Hysteresis +25C +25C -40 to +85C -40 to +125C +25C -40 to +85C -40 to +125C -40 to +125C +25C -40 to +85C -40 to +125C +25C 1mA IR -40 to +85C 15mA -40 to +125C IR = 1mA, f = 120Hz IAC = 0.1IR IR = 100A 10Hz < f < 10kHz IRMIN IR 1mA -- 47 -- 20 15 15 0.4 -- 2.7 -- mV A mV Electrical Characteristics (Cont.) (Test conditions: TA = +25C, unless otherwise specified.) LM4040-5.0 Symbol Reverse Breakdown Voltage VREF IRMIN VR/T VR/IR -- -- 50 99 125 79 85 88 -- 150 -- 1.3 1.8 1.8 10.0 15.0 15.0 ppm/C 0.5 1.1 1.1 1.5 80 -- -- -- VRMS t = 1000Hrs, IR = 100A 120 -- -- -- ppm T = -40C to +125C 0.08 -- -- -- % Average Reverse Breakdown Voltage Temperature Coefficient IR = 10mA IR = 1mA IR = 100A Noise Voltage Long Term Stability (Non Cumulative) Thermal Hysteresis LM4040 Document number: DS33195 Rev. 7 - 2 LM4040 B Limits 25 58 75 74 80 83 -- 100 -- 1.0 1.4 1.4 8.0 12.0 12.0 -- en Typ -- Minimum Operating Current Reverse Breakdown Change with Current TA 10 43 60 74 80 83 -- 100 -- 1.0 1.4 1.4 8.0 12.0 12.0 IR = 100A IR = 100A Dynamic Output Impedance VHYST -- Reverse Breakdown Voltage Tolerance ZR VR Conditions Parameter +25C +25C -40 to +85C -40 to +125C +25C -40 to +85C -40 to +125C -40 to +125C +25C -40 to +85C -40 to +125C +25C 1mA IR -40 to +85C 15mA -40 to +125C IR = 1mA, f = 120Hz IAC = 0.1IR IR = 100A 10Hz < f < 10kHz IRMIN IR 1mA 5.0 -- 54 -- 30 20 20 0.5 -- 3.5 -- 3 of 12 www.diodes.com mV A mV February 2017 (c) Diodes Incorporated LM4040 Typical Characteristics LM4040-2.5 E R V 1.00 0.75 0.75 0.50 0.50 0.25 VREF (%) VREF (%) )% (F 1.00 )% (F IR = 100A E R 0.00 V 0.25 -0.25 -0.25 -0.50 -0.50 -0.75 -0.75 -1.00 -40 0 40 80 TEMPERATURE (C) Reference Voltage Temperature Coefficient -1.00 -40 120 100 TA = 25C IR = 100A 100 1k 100k 0.01 100 1M 500 NOISE (nVHz) CL = 0 1k 10k 100k 1M FREQUENCY (Hz) Reference Impedance vs. Frequency 500 TA = 25C IR = 100A 400 )A ( 300 T N E R 200 R U C 100 E S R E 0 V E R , R -100 I -200 440 )z H /V n ( E S IO N CL = 1.0F Tantalum TA = 25C IR, REVERSE CURRENT (A) 460 120 TA = 25C FREQUENCY (Hz) Reference Impedance vs. Frequency 480 40 80 TEMPERATURE (C) Reference Voltage Temperature Coefficient IR = 1mA ) ( E C 10 N A D E P M I 1 E C N E R E F E 0.1 R ,R Z CL = 0 10k 0 ZR, REFERENCE IMPEDANCE () CL = 1.0F Tantalum IR = 1mA 0.00 420 400 380 360 340 320 300 -1 0 1 2 FREQUENCY (Hz) Noise Voltage vs. Frequency LM4040 Document number: DS33195 Rev. 7 - 2 -300 -1 3 4 of 12 www.diodes.com 0 1 2 VR , REVERSE VOLTAGE (V) Reference Current vs. Voltage 3 February 2017 (c) Diodes Incorporated LM4040 Typical Characteristics LM4040-3.0 F E R V 1.00 0.75 0.75 0.50 0.50 0.25 )% ( VREF (%) VREF (%) )% ( 1.00 IR = 100A F E R 0.00 V -0.25 0.25 I = 1mA 0.00 -0.25 -0.50 -0.50 -0.75 -0.75 -1.00 -40 0 40 80 TEMPERATURE (C) Reference Voltage Temperature Coefficient -1.00 -40 120 0 40 80 TEMPERATURE (C) Reference Voltage Temperature Coefficient 120 1k 1M 100 CL = 1.0F Tantalum 100 1k ZR, REFERENCE IMPEDANCE () TA = 25C IR = 100A CL = 0 10k 100k 10 1 0.1 0.01 100 1M FREQUENCY (Hz) Reference Impedance vs. Frequency 650 10k 100k FREQUENCY (Hz) Reference Impedance vs. Frequency 500 TA = 25C IR, REVERSE CURRENT (A) ) A ( T N E R R U C E S R E V E R ,R I NOISE (nV/Hz) 600 550 500 450 300 200 100 0 -100 -200 400 10 400 100 1k 10k FREQUENCY (Hz) Noise Voltage vs. Frequency LM4040 Document number: DS33195 Rev. 7 - 2 100k -300 -1 5 of 12 www.diodes.com 0 1 2 3 VR, REVERSE VOLTAGE (V) Reference Current vs. Voltage 4 February 2017 (c) Diodes Incorporated LM4040 Typical Characteristics LM4040-5.0 E R V 1.00 0.75 0.75 0.50 0.50 ) % (F 0.25 VREF (%) VREF (%) )% (F 1.00 E R 0.00 V 0.25 0.00 -0.25 -0.25 -0.50 -0.50 -0.75 -0.75 -1.00 -40 0 40 80 TEMPERATURE (C) Reference Voltage Temperature Coefficient IR = 1mA -1.00 -40 120 0 40 80 TEMPERATURE (C) Reference Voltage Temperature Coefficient 120 ZR, REFERENCE IMPEDANCE () 100 100 1k 10k 100k 10 1 0.1 100 1M FREQUENCY (Hz) Reference Impedance vs. Frequency 1k 10k 100k 1M FREQUENCY (Hz) Reference Impedance vs. Frequency 1200 500 IR, REVERSE CURRENT (A) )A ( T N E R R U C E S R E V E R ,R I NOISE (nV/Hz) 1000 800 600 400 10 100 1k 10k FREQUENCY (Hz) Noise Voltage vs. Frequency LM4040 Document number: DS33195 Rev. 7 - 2 100k TA = 25C 400 300 200 100 0 -100 -200 -300 -400 -1 6 of 12 www.diodes.com 0 1 2 3 4 5 VR, REVERSE VOLTAGE (V) Reference Current vs. Voltage 6 February 2017 (c) Diodes Incorporated LM4040 Start Up Characteristics LM4040-2.5, 3.0 and 5.0 LM4040-2.5 INPUT & OUTPUT VOLTAGE (V) )V ( E G A T L O V T U P T U O & T U P N I 6 INPUT & OUTPUT VOLTAGE (V) 6 )V ( E G A T L O V T U P T U O & T U P N I 5 4 3 2 1 Input 5 TA = 25C RS = 30k 4 3 Output 2 1 0 0 0 2 4 6 8 TIME (s) Long Pulse Response 10 0 2 4 6 8 TIME (s) Short Pulse Response 10 0 2 10 0 2 10 LM4040-3.0 7 )V ( E G A T L O V T U P T U O & T U P N I INPUT & OUTPUT VOLTAGE (V) INPUT & OUTPUT VOLTAGE (V) )V ( E G A T L O V T U P T U O & T U P N I 7 6 5 4 3 2 1 0 6 5 4 3 2 1 0 0 2 4 6 8 TIME (s) Long Pulse Response 10 4 6 8 TIME (s) Short Pulse Response LM4040-5.0 12 )V ( 10 E G A T 8 L O V T U 6 P T U O 4 & T U P N 2 I ) V ( 10 E G A T 8 L O V T U 6 P T U O & 4 T U P 2 N I INPUT & OUTPUT VOLTAGE (V) INPUT & OUTPUT VOLTAGE (V) 12 0 0 0 20 40 60 80 TIME (s) Long Pulse Response LM4040 Document number: DS33195 Rev. 7 - 2 100 7 of 12 www.diodes.com 4 6 8 TIME (s) Short Pulse Response February 2017 (c) Diodes Incorporated LM4040 Application Information In a conventional shunt regulator application (Figure 1), an external series resistor (RS) is connected between the supply voltage, VS, and the LM4040. VS IR + IL RS IL VR IR RS determines the current that flows through the load (I L) and the LM4040 (IR). Since load current and supply voltage may vary, RS should be small enough to supply at least the minimum acceptable IR to the LM4040 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 I L is at its minimum, RS should be large enough so that the current flowing through the LM4040 is less than 15mA. RS is determined by the supply voltage, (VS), the load and operating current, (IL and IR), and the LM4040's reverse breakdown voltage, VR. RS VS VR IL IR Figure 1 Printed Circuit Board Layout Considerations LM4040s in the SOT23 package have the die attached to pin 1, which results in an electrical contact between pin 2 and pin 3. Therefore, pin 1 of the SOT23 package must be left floating or connected to pin 2. LM4040s in the SC70-5 (Note 4) package have the die attached to pin 2, which results in an electrical contact between pin 2 and pin 1. Therefore, pin 2 must be left floating or connected to pin 1. Note: 4. SC70-5 variants are End of Life (EOL). LM4040 Document number: DS33195 Rev. 7 - 2 8 of 12 www.diodes.com February 2017 (c) Diodes Incorporated LM4040 Ordering Information +25C Tol Voltage (V) 2.5 0.2% 3.0 5.0 2.5 0.5% 3.0 5.0 2.5 1% 3.0 5.0 Notes: Part Number LM4040B25FTA LM4040B25H5TA LM4040B30FTA LM4040B30H5TA LM4040B50FTA LM4040B50H5TA LM4040C25FTA LM4040C25H5TA LM4040C30FTA LM4040C30H5TA LM4040C50FTA LM4040C50H5TA LM4040D25FTA LM4040D25H5TA LM4040D30FTA LM4040D30H5TA LM4040D50FTA LM4040D50H5TA Package (Note 5) Identification Code Reel Size Tape Width Quantity Full Production SOT23 R2B 7", 180mm 8mm 3000 End of Life SC70-5 R2B 7", 180mm 8mm 3000 Full Production SOT23 R3B 7", 180mm 8mm 3000 Status (Note 4) per Reel End of Life SC70-5 R3B 7", 180mm 8mm 3000 Full Production SOT23 R5B 7", 180mm 8mm 3000 End of Life SC70-5 R5B 7", 180mm 8mm 3000 Full Production SOT23 R2C 7", 180mm 8mm 3000 End of Life SC70-5 R2C 7", 180mm 8mm 3000 Full Production SOT23 R3C 7", 180mm 8mm 3000 End of Life SC70-5 R3C 7", 180mm 8mm 3000 Full Production SOT23 R5C 7", 180mm 8mm 3000 End of Life SC70-5 R5C 7", 180mm 8mm 3000 Full Production SOT23 R2D 7", 180mm 8mm 3000 End of Life SC70-5 R2D 7", 180mm 8mm 3000 Full Production SOT23 R3D 7", 180mm 8mm 3000 End of Life SC70-5 R3D 7", 180mm 8mm 3000 Full Production SOT23 R5D 7", 180mm 8mm 3000 End of Life SC70-5 R5D 7", 180mm 8mm 3000 4. SC70-5 variants are End of Life. 5. Package dimensions and pad layout can be found on our website at http://www.diodes.com/package-outlines.html. LM4040 Document number: DS33195 Rev. 7 - 2 9 of 12 www.diodes.com February 2017 (c) Diodes Incorporated LM4040 Marking Information (1) SOT23 Part Number XXX : Identification Code (2) LM4040B25FTA LM4040B30FTA LM4040B50FTA LM4040C25FTA LM4040C30FTA LM4040C50FTA LM4040D25FTA LM4040D30FTA LM4040D50FTA Identification Code R2B R3B R5B R2C R3C R5C R2D R3D R5D SC70-5 (Note 4) RXX : Identification code LM4040 Document number: DS33195 Rev. 7 - 2 10 of 12 www.diodes.com February 2017 (c) Diodes Incorporated LM4040 Package Outline Dimensions Please see http://www.diodes.com/package-outlines.html for the latest version. (1) Package Type: SOT23 All 7 H K1 J K 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 0.890 1.00 0.975 K1 0.903 1.10 1.025 L 0.45 0.61 0.55 L1 0.25 0.55 0.40 M 0.085 0.150 0.110 a 0 8 -All Dimensions in mm GAUGE PLANE 0.25 a M A L C L1 B D F (2) G SC70-5 (Note 4) Dim. Min. Max. Typ. A 1.1 0.8 - A1 0.1 - - A2 1 0.8 - b 0.3 0.15 - C D 0.25 0.08 2.00 BSC - E 2.10 BSC E1 1.25 BSC e 0.65 BSC e1 L a LM4040 Document number: DS33195 Rev. 7 - 2 11 of 12 www.diodes.com 1.30 BSC 0.46 0 0.26 8 - February 2017 (c) Diodes Incorporated LM4040 Suggested Pad Layout Please see http://www.diodes.com/package-outlines.html for the latest version. (1) Package Type: SOT23 Y C Y1 X Dimensions C X X1 Y Y1 Value (in mm) 2.0 0.8 1.35 0.9 2.9 X1 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). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. 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Copyright (c) 2017, Diodes Incorporated www.diodes.com LM4040 Document number: DS33195 Rev. 7 - 2 12 of 12 www.diodes.com February 2017 (c) Diodes Incorporated Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Diodes Incorporated: LM4040C30FTA LM4040C25FTA LM4040C50FTA LM4040D25FTA LM4040D50FTA