mic37139 Micrel Semiconductor, mic37139 Datasheet
mic37139
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mic37139 Summary of contents
Page 1
... It offers high precision, ultra-low dropout (500mV overtemperature), and low ground current. The MIC37139 operates from an input of 2.25V to 6.0V designed for a wide variety of applications including digital circuits requiring low-voltage at high currents (i.e., PLDs, DSPs, microcontrollers, etc.). It is available in a fixed output voltage of 1 ...
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... MIC37139 Ordering Information Part Number MIC37139-1.8BS *For additional voltage options, please contact Micrel. Pin Configuration Pin Description Pin Number Pin Name 1 GND 2 OUT 3 IN M9999-112003 Output Current Voltage Junction Temp. Range 1.5A 1.8V –40°C to +125°C OUT TAB GND OUT ...
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... MIC37139 Absolute Maximum Rating Supply Voltage (V ) .................................................... 6.5V IN Enable Input Voltage (V ) .......................................... 6.5V EN Power Dissipation .................................... Internally Limited Junction Temperature (T ) ................. –40°C ≤ Storage Temperature (T ) ................. –65°C ≤ Lead Temperature (soldering, 5 sec.) ....................... 260°C (4) ESD Electrical Characteristics T = 25°C with 1V ...
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... MIC37139 Typical Characteristics Power Supply Rejection Ratio 3. 2.5V OUT 1.5A 20 OUT C = 10µF OUT 1E-2 1E-1 1E+0 1E+1 1E+2 1E+3 0.01 0 100 1k FREQUENCY (Hz) Dropout Voltage vs. Temperature 500 450 400 2.5V 350 OUT 300 250 200 150 100 50 0 -40 - 100 120 TEMPERATURE (°C) Ground Current vs ...
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... MIC37139 Output Voltage vs. Temperature 2.60 2.58 2.56 2.54 2.52 2.50 2.48 2.46 2.44 2.42 2.40 -40 - 100 120 TEMPERATURE (°C) February 2005 5 Micrel, Inc. M9999-112003 ...
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... MIC37139 Functional Characteristics Load Transient Response 2.5V OUT C = 47µF OUT TIME (400µs/div.) M9999-112003 OUT C OUT 1.5A 10mA Line Transient Response V = 2.5V OUT C = 10µF OUT 5V 3.3V TIME (250µs/div.) 6 Micrel, Inc. Load Transient Response = 3.3V = 2.5 = 10µF 5V 3.3V 1.5A 100mA TIME (400µs/div.) ...
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... MIC37139 Functional Diagram IN February 2005 1.240V Ref. Thermal Shut- down MIC37139 Fixed Regulator Block Diagram 7 Micrel, Inc. OUT M9999-112003 ...
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... Output Capacitor The MIC37139 requires an output capacitor for stable opera- tion µCap LDO, the MIC37139 can operate with ceramic output capacitors as long as the amount of capacitance is 47µF or greater. For values of output capacitance lower than 47µ ...
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... To convert down to 2.5V without operating in dropout, NPN-based regulators require an input voltage of 3.7V at the very least. The MIC37139 regulator will provide excellent performance with an input as low as 3.0V or 2.25V, respectively. This gives the PNP-based regulators a distinct advantage over older, NPN-based linear regulators ...
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... MIC37139 Package Information MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. ...