MIC2937A Micrel Semiconductor, MIC2937A Datasheet
MIC2937A
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MIC2937A Summary of contents
Page 1
... The MIC2937A family are “bulletproof” efficient voltage regulators with very low dropout voltage (typically 40mV at light loads and 300mV at 500mA), and very low quiescent current (160 A typical). The quiescent current of the MIC2937A increases only slightly in dropout, thus prolonging battery life. Key MIC2937A features include protection against reversed battery, fold-back current limiting, and automotive “ ...
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... MIC2937A/29371/29372 Ordering Information Part Number Voltage MIC2937A-3.3BU 3.3 MIC2937A-3.3BT 3.3 MIC2937A-5.0BU 5.0 MIC2937A-5.0BT 5.0 MIC2937A-12BU 12 MIC2937A-12BT 12 MIC29371-3.3BT 3.3 MIC29371-3.3BU 3.3 MIC29371-5.0BT 5.0 MIC29371-5.0BU 5.0 MIC29371-12BT 12 MIC29371-12BU 12 MIC29372BT Adj MIC29372BU Adj * Junction temperatures October 1999 Temperature Range* Package – +125 C TO-263-3 – ...
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... C and limits in boldface apply over the full operating temperature range 1V 5mA The MIC29372 are programmed for a 5V output voltage, OUT L L Conditions Variation from factory trimmed V 5mA I 500mA L MIC2937A-12 and 29371-12 only: 5mA I 500mA L (Note 2) Output voltage > 10V 26V IN OUT 500mA ...
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... Current in Shutdown October 1999 (Continued) 21 Micrel Min Typical Max Units 1.223 1.235 1.247 V 1.210 1.260 V max 1.204 1.266 ppm/ C 0.1 nA/ C 0.01 1.00 A 2.00 150 250 mV 400 140 15 mV 1.3 V 0.7 2 100 450 600 A 750 MIC2937A/29371/29372 ...
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... Dropout Voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value measured at 1V differential. At low values of programmed output voltage, the minimum input supply voltage of 4.3V over temperature must be taken into account. The MIC2937A operates down input at reduced output current Note 5: Ground pin current is the regulator quiescent current ...
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... FIXED 750mA 5 LOAD INPUT VOLTAGE (V) Ground Current vs. Temperature 750mA 25 LOAD -60 - 120 150 TEMPERATURE ( C) Ground Current vs. Input Voltage 500 R = 100 LOAD 400 300 200 100 0 -100 -30 -20 - INPUT VOLTAGE (V) MIC2937A/29371/29372 ...
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... TEMPERATURE ( C) MIC29372/3 Adjust Pin Current vs. Temperature 1mA 10 LOAD 0 -60 - 120 150 TEMPERATURE ( C) MIC2937A/29371/29372 Load Transient 300 150 OUT 0 -150 1000 -300 750 500 5mA 250 0 -250 - TIME (ms) ...
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... For the worst-case situation of a 750mA load at 1.23V output (Output shorted to Adjust (or greater) capacitor should be used. The MIC2937A/29371 will remain in regulation with a minimum load of 5mA. When setting the output voltage of the MIC29372 version with external resistors, the current through these resistors may be included as a portion of the minimum load ...
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... MIC2937A/29371/29372 , since it reduces Automotive Applications 1 The MIC2937A is ideally suited for automotive applications for a variety of reasons. It will operate over a wide range of input voltages with very low dropout voltages (40mV at light loads), and very low quiescent currents (100 A typical). These features are necessary for use in battery powered systems, such as automobiles “ ...