MIC38C43-1BM Micrel Inc, MIC38C43-1BM Datasheet
MIC38C43-1BM
Specifications of MIC38C43-1BM
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MIC38C43-1BM Summary of contents
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... MIC38C4x-1 (14-lead) versions only ( ) MIC38C4x, (8-lead) versions only * MIC38C42, MIC38C43 (96% max. duty cycle) versions only † MIC38C44, MIC38C45 (50% max. duty cycle) versions only ‡ Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com ...
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... MIC38C45BM MIC38C45YM MIC38C42BMM MIC38C42YMM MIC38C43BMM MIC38C43YMM MIC38C44BMM MIC38C44YMM MIC38C45BMM MIC38C45YMM MIC38C42-1BM MIC38C42-1YM MIC38C43-1BM MIC38C43-1YM MIC38C44-1BM MIC38C44-1YM MIC38C45-1BM MIC38C45-1YM * Refer to the Part Number Cross Reference for a listing of Micrel devices equivalent to UC284x and UC384x devices. Selection Guide Duty Cycle 50% M9999-091107 Temperature Range -40° ...
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MIC38C42/3/4/5 Pin Configuration MIC38C4x 8-Pin DIP (N) 8-Pin SOIC (M) 8-Pin MSOP (MM) Pin Description Pin Number Pin Number Pin Name ...
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MIC38C42/3/4/5 Absolute Maximum Ratings Zener Current (V ) ................................................... 30mA DD Operation at ≥18V may require special precautions (Note 6). Supply Voltage (V ), Note 6 ........................................ 20V DD Switch Supply Voltage (V ) ........................................... 20V D Current Sense Voltage ...
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... DD Note 5: Output frequency equals oscillator frequency for the MIC38C42 and MIC38C43. Output frequency for the MIC38C44, and MIC38C45 equals one half the oscillator frequency. Note 6: On 8-pin version, 20V is maximum input on pin 7, as this is also the supply pin for the output stage. On 14-pin version, 40V is maximum for pin 12 and 20V maximum for pin 11 ...
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MIC38C42/3/4/5 Typical Characteristics Oscillator Frequency Configuration 100 200pF 470pF 1nF 10 1.8nF 4.7nF 10nF V = 15V 1x10 1x10 5x10 OSCILLATOR FREQUENCY (Hz) Current Sense Amplifier vs. Error Amplifier Output 1.2 1.0 125°C 0.8 0.6 ...
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MIC38C42/3/4/5 Application Information Familiarity with 384x converter designs is assumed. The MIC38C4x has been designed to be compatible with 384xA series controllers. MIC38C4x Advantages Start-up Current Start-up current has been reduced to an ultra-low 50µA (typi- cal) permitting higher-valued, lower-wattage, ...
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... (20MHz BW Synchronous Buck Converter Refer to figure 2. This MIC38C43 synchronous buck converter uses an MIC5022 half-bridge driver to alternately drive the PWM switch MOSFET (driven by GATEH, or high-side output) and a MOSFET which functions as a synchronous rectifier (driven by the GATEL, or low-side output). The low-side MOSFET turns on when the high-side MOS- FET is off, allowing current to return from ground. Current fl ...
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MIC38C42/3/4/5 Package Information 0.018 (0.57) .235 (5.969) .215 (5.461) .160 MAX (4.064) .160 (4.064) .100 (2.540) September 2007 PIN 1 DIMENSIONS: INCH (MM) 0.380 (9.65) 0.370 (9.40) 0.135 (3.43) 0.125 (3.18) 0.380 (9.65) 0.130 (3.30) 0.320 (8.13) 0.100 (2.54) 0.0375 ...
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MIC38C42/3/4/5 M9999-091107 8-Pin SOIC (M) 8-Pin MSOP (MM) 10 Micrel, Inc. September 2007 ...
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... MIC38C42/3/4/5 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. ...