MIC2177BWM Micrel Inc, MIC2177BWM Datasheet

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... R1 10k C C 6.8nF Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( April 2008 Features • 4.5V to 16.5V input voltage range • Dual-mode operation for high efficiency (up to 96%) • 100mΩ internal power MOSFETs at 12V input • ...

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... Micrel, Inc. Ordering Information Part Number Output Voltage MIC2177-3.3BWM 3.3V MIC2177-5.0BWM 5.0V MIC2177BWM Adj. MIC2177-3.3YWM 3.3V Pin Configuration April 2008 Switching Temperature Range Frequency 200kHz –40°C to +85°C 200kHz –40°C to +85°C 200kHz –40°C to +85°C 200kHz –40°C to +85°C ...

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Micrel, Inc. Pin Description Pin Number Pin Name VIN PGND 10 OUT 11 AUTO COMP 14, 15, 16, 17 SGND 18 SYNC 19 BIAS 20 EN April ...

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Micrel, Inc. Absolute Maximum Ratings Supply Voltage [100ms transient] (V Output Switch Voltage (V ). .........................................18V SW Output Switch Current (I )...........................................6.0A SW Enable, Output-Sense Voltage (V Sync Voltage (V )........................................................6V SYNC Electrical Characteristics V = 7.0V 25°C, ...

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Micrel, Inc. Symbol Parameter I Output Switch Leakage SW Enable Threshold I Enable Leakage EN AUTO Threshold AUTO Source Current Minimum Switch Current for PWM Operation General Note: Devices are ESD sensitive. Handling precautions recommended. April 2008 Condition V = ...

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Micrel, Inc. Typical Characteristics Oscillator Frequency vs. Temperature 205 200 195 190 185 180 175 -60 - 120 150 TEMPERATURE (°C) Reference Voltage vs. Temperature 5.030 MIC21775.0 5.020 5.010 5.000 4.990 4.980 4.970 -60 -30 0 ...

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Micrel, Inc. Functional Diagram UVLO, Thermal Shutdown EN 3.3V Enable Regulator Shutdown 20 BIAS 19 10k 0.01µF internal supply voltage SYNC 200kHz Oscillator 18 AUTO Auto-Mode PWM 11 2.2nF COMP MIC2177 [Adjustable] April 2008 Output ...

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Micrel, Inc. Functional Description Micrel’s MIC2177 is a synchronous buck regulator that operates from an input voltage of 4.5V to 16.5V and provides a regulated output voltage of 1.25V to 16.5V. It has internal power MOSFETs that supply up to ...

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Micrel, Inc. discharged from the inductor and I next switching cycle begins. By varying the P-channel on-time (duty cycle), the average inductor current is adjusted to whatever value is required to regulate the output voltage. The MIC2177 uses current-mode control ...

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Micrel, Inc. given in the “Applications Information” section. Note that ∆I varies as a function of input voltage, and this also L causes I to vary. In applications where the input MIN voltage changes by a factor of two, I ...

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Micrel, Inc. PWM-Mode Functional Diagram 200kHz Stop Oscillator MIC2177 [Adjustable] PWM-Mode Signal Path Reset Pulse Error Amp. Output I S ...

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Micrel, Inc. Skip-Mode Functional Diagram Output Control Logic MIC2177 [Adjustable] Skip-Mode Signal Pat V One-Shot Pulse April 2008 One Shot Amp. I LIMIT Comp. I LIMIT Thresh. ...

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Micrel, Inc. Application Information Feedback Resistor Selection (Adjustable Version) The output voltage is configured by connecting an external resistive divider to the FB pin as shown in “MIC2177 Block Diagram.” The ratio determines the output voltage. ...

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Micrel, Inc. the MIC2177. A good design takes into consideration component placement and routing of power traces. The first thing to consider is the locations of the input capacitor, inductor, output diode, and output capacitor. The input capacitor must be ...

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Micrel, Inc. Package Information MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. ...