MIC2168BMM Micrel Inc, MIC2168BMM Datasheet

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MIC2168 General Description The MIC2168 is a high-efficiency, simple to use 1MHz PWM synchronous buck control IC housed in a small MSOP-10 package. The MIC2168 allows compact DC/DC solutions with a minimal external component count and cost. The MIC2168 operates ...

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... MIC2168 Ordering Information Part Number Standard Pb-Free MIC2168BMM MIC2168YMM Pin Configuration Pin Description Pin Number Pin Name 1 VIN 2 VDD COMP/ GND 7 LSD 8 VSW 9 HSD 10 BST M9999-040805 Frequency Junction Temp. Range 1MHz -40°C to +125°C VIN 1 10 BST VDD 2 9 HSD ...

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MIC2168 Absolute Maximum Ratings Supply Voltage (V ) ................................................... 15.5V IN Booststrapped Voltage (V ) .................................V BST Junction Temperature (T ) ...................–40°C ≤ Storage Temperature (T ) ........................ –65°C to +150°C S Electrical Characteristics T = 25°C, V ...

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MIC2168 Electrical Characteristics Parameter Condition Error Amplifier DC Gain Transconductance Soft-Start Soft-Start Current After timeout of internal timer. See “Soft-Start” section. Current Sense CS Over Current Trip Point V CS Temperature Coefficient Output Fault Correction Thresholds Upper Threshold, V (relative ...

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MIC2168 Typical Characteristics April 2005 5 Micrel, Inc. M9999-040805 ...

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MIC2168 Functional Diagram LDO 5V 5V Current Limit 0.8V Bandgap Reference BG Valid 5V Clamp & Startup Soft-Start & Current Digital Delay Counter Ramp Clock Enable Error Loop 0.8V Error Amp COMP C1 ...

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MIC2168 is reduced to 8.5µA and the COMP pin voltage rises from 0.65V to 0.95V, the bottom edge of the saw-tooth oscillator. This is the beginning of 0% duty cycle and it increases slowly causing the output voltage to rise ...

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MIC2168 V regulator operates in dropout mode, and it is necessary DD that the power MOSFETs used are low threshold and are in full conduction mode for V of 2.5V. For applications when GS V > 5V; logic-level MOSFETs, whose ...

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MIC2168 × − max OUT IN OUT × × V max The peak inductor current is equal to the average output current plus one half of ...

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MIC2168 ≈ × × − max (rms) OUT IN The power dissipated in the input capacitor is: = × DISS(C ) ESR (rms Voltage Setting ...

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MIC2168 30 30 7 100 100 f Figure 4. The Gain Curve for G( 100 150 180 ...

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MIC2168 .001 1000 f Figure 7. Error Amplifier Gain Curve 200 215.856 220 240 260 270 ...

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MIC2168 Design Example Layout and Checklist: 1. Connect the current limiting (CS) resistor directly to the drain of top MOSFET Q1. 2. Connect the VSW pin directly to the source of top MOSFET Q1 thru a 4Ω to 10Ω resistor. ...

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... MIC2168 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. ...