MIC2937A-3.3BU Micrel Inc, MIC2937A-3.3BU Datasheet
MIC2937A-3.3BU
Specifications of MIC2937A-3.3BU
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MIC2937A-3.3BU Summary of contents
Page 1
... The quiescent current of the MIC2937A in- creases 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 Standard RoHS Compliant* MIC2937A-3.3BU MIC2937A-3.3WU MIC2937A-3.3BT MIC2937A-3.3WT MIC2937A-5.0BU MIC2937A-5.0WU MIC2937A-5.0BT MIC2937A-5.0WT MIC2937A-12BU MIC2937A-12WU MIC2937A-12BT MIC2937A-12WT MIC29371-3.3BU MIC29371-3.3WU MIC29371-3.3BT MIC29371-3.3WT MIC29371-5.0BU MIC29371-5.0WU MIC29371-5.0BT MIC29371-5.0WT MIC29371-12BU MIC29371-12WU MIC29371-12BT MIC29371-12WT MIC29372BU MIC29372WU MIC29372BT MIC29372WT * RoHS compliant with ‘high-melting solder’ exemption. ...
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... The MIC29372 are programmed for a 5V output voltage, and V L Conditions Variation from factory trimmed V OUT 5mA ≤ I ≤ 500mA L MIC2937A-12 and 29371-12 only: 5mA ≤ I ≤ 500mA L (Note 2) Output voltage > 10V 26V ...
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... Hysteresis (Note 9) MIC29371/MIC29372 Shutdown Input Input Logic Voltage Low (ON) High (OFF) Shutdown Pin V = 2.4V SHUTDOWN Input Current V = 26V SHUTDOWN Regulator Output (Note 10) Current in Shutdown MIC2937A/29371/29372 (Continued) 4 Micrel, Inc. Min Typical Max Units 1.223 1.235 1.247 V 1.210 1.260 V max 1.204 1.266 V 20 ...
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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 at 25°C. Note 5: Ground pin current is the regulator quiescent current ...
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... TEMPERATURE ( °C) Fixed 3.3V Output Voltage vs. Temperature 3.40 3.38 3.36 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 -60 - 120 150 TEMPERATURE ( °C) MIC2937A/29371/29372 Dropout Voltage vs. Temperature 700 600 500 400 I = 750mA 300 LOAD 200 100 0 -60 - 120 150 TEMPERATURE ( °C) Ground Current vs ...
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... LOAD 0.01 FREQUENCY (Hz) 7 Micrel, Inc. Load Transeint 200 C = 100 µF 100 OUT 0 -100 1000 -200 750 500 5mA 250 0 -250 - TIME (ms) Line Transient 100 µF OUT 5mA -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 TIME (ms) MIC2937A/29371/29372 ...
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... MIC2937A/29371/29372 Applications Information External Capacitors A 10µF (or greater) capacitor is required between the MIC2937A output and ground to prevent oscillations due to instability. Most types of tantalum or aluminum electrolytics will be adequate; film types will work, but are costly and therefore not recom- mended. Many aluminum electrolytics have electrolytes that freeze at about – ...
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... DEPENDING ON LOAD CURRENT. Figure 4. MIC29372 Wide Input Voltage Range Current Limiter May 2006 Automotive Applications The MIC2937A is ideally suited for automotive applications for a variety of reasons. It will operate over a wide range of 1 input voltages with very low dropout voltages (40mV at light • 200 Hz loads), and very low quiescent currents (100µ ...
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... MIC2937A/29371/29372 Package Information MIC2937A/29371/29372 3-Pin TO-263 (U) 3-Pin TO-220 (T) 10 Micrel, Inc. May 2006 ...
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... MIC2937A/29371/29372 4 θ May 2006 1 θ 2 θ 1 θ 1 θ 3 θ 2 θ 3 θ 4 θ 5-Pin TO-263 (U) 5-Pin TO-220 (T) 11 Micrel, Inc. MIC2937A/29371/29372 ...
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... A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify MIC2937A/29371/29372 + 1 (408) 474-1000 ...