MIC5253 Micrel Semiconductor, MIC5253 Datasheet
MIC5253
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MIC5253 Summary of contents
Page 1
... It offers 1.5% initial accuracy, extremely low dropout voltage (165mV at 100mA), and low ground current (typically full load). The MIC5253 provides a very low noise output, ideal for RF applications where a clean voltage source is required. A noise bypass pin is also available for further reduction of output noise ...
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... MIC5253 Pin Configuration Pin Description Pin Number Pin Name Pin Function 1 IN Supply Input. 2 GND Ground Enable/Shutdown (Input): CMOS compatible input. Logic high = enable; logic low = shutdown. Do not leave open. 4 BYP Reference Bypass: Connect external 0.01 F noise. May be left open. 5 OUT Regulator Output ...
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... F 66 BYP = 0 BYP = 0 BYP 30 150 250 30 1.6 0.01 0.01 150 – Exceeding the maximum allowable power J(max the MIC5253-x.xBC5 (all versions Micrel IN Max Units 1 0.05 %/V 2.5 % 150 mV 300 100 A 150 150 s 450 mA V(rms) ...
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... MIC5253 Typical Characteristics Power Supply Rejection Ratio 100 A 40 1mA 10mA 30 100mA 1.8V OUT OUT 0 2.8V BYP IN 0 100 1k 10k 100k 1M FREQUENCY (Hz) Ground Pin Current 100mA LOAD 70 -40 - 100 120 TEMPERATURE (° ...
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... MIC5253 Functional Characteristics Line Transient Response 5V 4V TIME (500 s/div) Enable Pin Delay TIME (5 s/div) August 2004 Ceramic Ceramic OUT C = 0.01 F BYP I = 100 A OUT Ceramic Ceramic OUT C = 0.01 F BYP I = 100 A OUT 5 Load Transient Response 100mA ...
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... MIC5253 Block Diagram IN Reference Voltage EN Thermal Sensor Under- voltage Lockout GND M9999-081804 Startup/ Quickstart/ Shutdown Noise Control Cancellation FAULT Error Current Amplifier Amplifier ACTIVE SHUTDOWN 6 Micrel BYP OUT August 2004 ...
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... This allows the output capacitor and load to dis- charge, de-energizing the load. August 2004 No-Load Stability The MIC5253 will remain stable and in regulation with no load unlike many other voltage regulators. This is especially important in CMOS RAM keep-alive applications. Thermal Considerations The MIC5253 is designed to provide 100mA of continuous current in a very small package ...
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... MIC5253 Therefore, a 2.9V application at 100mA of output current can accept an ambient operating temperature SC-70 package. For a full discussion of heat sinking and thermal effects on voltage regulators, refer to the “Regulator Thermals” Micrel’s Designing with Low-Dropout Voltage Regu- section of lators handbook. This information can be found on Micrel's website at: http://www ...
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... MIC5253 Package Information 0.65 (0.0256) BSC 2.20 (0.087) 1.80 (0.071) 0.30 (0.012) 0.15 (0.006) MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The 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. ...