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LM4132CMF-2.0 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4132CMF-2.0 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 15 page  LM4132 SOT-23 Precision Low Dropout Voltage Reference General Description The LM4132 family of precision voltage references performs comparable to the best laser-trimmed bipolar references, but in cost effective CMOS technology. The key to this break through is the use of EEPROM registers for correction of curvature, tempco, and accuracy on a CMOS bandgap ar- chitecture that allows package level programming to over- come assembly shift. The shifts in voltage accuracy and tempco during assembly of die into plastic packages limit the accuracy of references trimmed with laser techniques. Unlike other LDO references, the LM4132 is capable of delivering up to 20mA and does not require an output ca- pacitor or buffer amplifier. These advantages and the SOT23 packaging are important for space-critical applications. Series references provide lower power consumption than shunt references, since they do not have to idle the maxi- mum possible load current under no load conditions. This advantage, the low quiescent current (60µA), and the low dropout voltage (400mV) make the LM4132 ideal for battery- powered solutions. The LM4132 is available in five grades (A, B, C, D and E) for greater flexibility. The best grade devices (A) have an initial accuracy of 0.05% with guaranteed temperature coefficient of 10ppm/˚C or less, while the lowest grade parts (E) have an initial accuracy of 0.5% and a tempco of 30ppm/˚C. Features n Output initial voltage accuracy 0.05% n Low temperature coefficient 10ppm/˚C n Low Supply Current, 60µA n Enable pin allowing a 3µA shutdown mode n 20mA output current n Voltage options 2.048V, 2.5V, 4.096V n Custom voltage options available (1.8V to 4.096V) n V IN range of VREF + 400mV to 5.5V @ 10mA n Stable with low ESR ceramic capacitors n SOT23-5 Package Applications n Instrumentation & Process Control n Test Equipment n Data Acquisition Systems n Base Stations n Servo Systems n Portable, Battery Powered Equipment n Automotive & Industrial n Precision Regulators n Battery Chargers n Communications n Medical Equipment Typical Application Circuit 20151301 *Note: The capacitor CIN is required and the capacitor COUT is optional. September 2005 © 2005 National Semiconductor Corporation DS201513 www.national.com |
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