LM4050/LM4051 50ppm/C Precision Micropower Shunt Voltage References with Multiple Reverse Breakdown Voltages General Description Features The LM4050/LM4051 are precision two-terminal, shunt- 50ppm/C (max) Temperature Coefficient mode, bandgap voltage references available in fixed Guaranteed over the -40C to +125C reverse breakdown voltages of 1.225V, 2.048V, 2.500V, Temperature Range 3.000V, 3.3V, 4.096V, and 5.000V. Ideal for space-criti- Ultra-Small 3-Pin SC70 Package cal applications, the LM4050/LM4051 are offered in the 0.1% (max) Initial Accuracy subminiature 3-pin SC70 surface-mount packages (1.8mm x 1.8mm), 50% smaller than comparable Wide Operating Current Range: 60A to 15mA devices in SOT23 surface-mount package (SOT23 ver- Low 28V Output Noise (10Hz to 10kHz) RMS sions are also available). 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and Laser-trimmed resistors ensure excellent initial 5.000V Fixed Reverse Breakdown Voltages accuracy. With a 50ppm/C temperature coefficient, No Output Capacitors Required these devices are offered in three grades of initial accu- racy ranging from 0.1% to 0.5%. The LM4050/LM4051 Tolerates Capacitive Loads have a 60A to 15mA shunt-current capability with low dynamic impedance, ensuring stable reverse break- down voltage accuracy over a wide range of operating Pin Configuration temperatures and currents. The LM4050/LM4051 do not require an external stabilizing capacitor while ensuring stability with any capacitive loads. TOP VIEW The LM4050/LM4051 specifications are guaranteed over the temperature range of -40C to +125C. + + 1 Applications LM4050/ 3 N.C.* LM4051 Portable, Battery-Powered Equipment - 2 Notebook Computers Cell Phones SC70/SOT23 Industrial Process Controls *PIN 3 MUST BE LEFT UNCONNECTED OR CONNECTED TO PIN 2. Typical Operating Circuit Ordering Information appears at end of data sheet. V S I + I SHUNT LOAD R S I LOAD V R I SHUNT LM4050 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. 19-2563 Rev 7 1/13LM4050/LM4051 50ppm/C Precision Micropower Shunt Voltage References with Multiple Reverse Breakdown Voltages ABSOLUTE MAXIMUM RATINGS Reverse Current (cathode to anode) ..................................20mA Operating Temperature Range Forward Current (anode to cathode) ..................................10mA LM4050/LM4051 E ................................-40C to +125C Continuous Power Dissipation (T = +70C) Storage Temperature Range .............................-65C to +150C A 3-Pin SC70 (derate 2.17mW/C above +70C)............174mW Junction Temperature......................................................+150C 3-Pin SOT23 (derate 4.01mW/C above +70C)..........320mW Lead Temperature (soldering, 10s)..................................+300C Soldering Temperature (reflow) .......................................+260C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS1.225V (I = 100A, T = T to T , unless otherwise noted. Typical values are at T = +25C.) (Note 1) R A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS LM4051A (0.1%) 1.2238 1.2250 1.2262 Reverse Breakdown Voltage V T = +25C V LM4051B (0.2%) 1.2226 1.2250 1.2275 R A LM4051C (0.5%) 1.2189 1.2250 1.2311 LM4051A 1.2 7 Reverse Breakdown Voltage V LM4051B 2.4 9 mV RTOL Tolerance (Note 2) LM4051C 6.0 12 Minimum Operating Current I 45 60 A RMIN I = 10mA 20 R Average Reverse Voltage Temperature Coefficient V / T I = 1mA 15 50 ppm/C R R (Notes 2, 3) I = 100A 15 R Reverse Breakdown Voltage I I 1mA 0.7 1.5 RMIN R Change with Operating mV 1mA I 12mA 2.5 8.0 R Current Change Reverse Dynamic Z I = 1mA, f = 120Hz, I = 0.1I 0.5 1.5 R R AC R Impedance (Note 3) Wideband Noise e I = 100A, 10Hz f 10kHz 20 V N R RMS Reverse Breakdown Voltage V T = 1000h 120 ppm R Long-Term Stability 2 Maxim Integrated