MIC2186BQS Micrel Inc, MIC2186BQS Datasheet
MIC2186BQS
Specifications of MIC2186BQS
Related parts for MIC2186BQS
MIC2186BQS Summary of contents
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... A manually selectable SKIP Mode allows high efficiencies in light load situations. The MIC2186 is available in 16 pin SOIC and QSOP package options with an operating range from –40°C to 125°C. Ordering Information Part Number Standard MIC2186BM MIC2186BQS Typical Application VINA 120µ ...
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MIC2186 Pin Configuration Pin Description Pin Number Pin Name 1 VINA 2 SKIP COMP 5 SGND EN/UVLO 8 VREF 9 CSH 10 VDD 11 SYNC 12 PGND 13 HIDC 14 OUTN 15 FREQ/2 16 ...
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MIC2186 Absolute Maximum Ratings (Note 1) Supply Voltage ( ......................................... 15V IN IN Digital Supply Voltage (V ) ........................................... 7V DD SKIP Pin Voltage (V ) ................................. –0. SKIP Max Duty Cycle Pin Voltage (V ...
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MIC2186 Parameter Condition Enable/UVLO Enable Input Threshold UVLO Threshold UVLO Hysteresis Enable Input Current V EN/UVLO Soft Start Soft Start Current Current Limit Current Limit Threshold Voltage (Voltage on CSH to trip current limit) Error Amplifier Error Amplifier Gain Current ...
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MIC2186 Typical Characteristics Quiescent Current vs. Temperature (SKIP Mode) 0.8 0.7 0.6 0.5 0.4 0.3 0 12V 0 QVINA QVINP 0 -40 -20 0 ...
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MIC2186 Oscillator Frequency vs. Input Voltage 406 12V IN DC 404 402 400 398 396 394 392 INPUT VOLTAGE (V ) INA M9999-042205 Oscillator Frequency vs. Temperature 405 400 ...
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MIC2186 Functional Diagram V IN EN/UVLO 7 SKIP 2 fs/4 Freq/2 15 Sync Osc 11 HiDC Corrective Ramp Soft Start 3 COMP 4 V REF Functional Description The MIC2186 is a BiCMOS, ...
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MIC2186 V IN EN/UVLO 7 SKIP HiDC 13 Freq/2 15 Sync 11 Soft Start 3 COMP 4 V REF The description of the MIC2186 controller is broken down into 6 basic functions. • ...
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MIC2186 SKIP Mode Operation This control method is used to improve efficiency at low output loads. A block diagram of the MIC2186 SKIP mode is shown in Figure 2. The power drawn by the MIC2186 control ...
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MIC2186 PWM Mode Waveforms Conditions 0.6A O TIME (1µs/div) Figure 5 - PWM mode waveforms The MIC2186 uses current mode control to improve output regulation and simplify compensation of the ...
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MIC2186 V SENSE R = SENSE I IND(pk) where: Vsense is the minimum current sense threshold of the CSH pin Maximum Peak Current in Continuous Mode: The peak inductor current is equal to the average inductor current plus one half ...
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MIC2186 The reverse voltage requirement of the diode is: For the MIC2186, Schottky diodes are recommended when they can be used. They have a lower forward voltage drop than ultra-fast rectifier diodes, which lowers power dissipa- tion and improves efficiency. ...
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MIC2186 MIC2186 Sync Conditions: HiDC = HIGH F/2 = LOW Figure 8a. MIC2186 Sync Conditions: HiDC = LOW F/2 = LOW Figure 8b. The maximum recommended output switching frequency is 600kHz. Synchronizing to higher frequencies may be pos- sible, however ...
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MIC2186 MIC2186 Voltage Amplifier Pin 6 V REF 1.245V Figure 11. The output voltage is determined by the equation below × REF R2 Where: Vref for the MIC2186 is nominally 1.245V. Lower values ...
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... SEATING 0.0688 (1.748) PLANE 0.0532 (1.351) 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. ...