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Page 1
General Description The MIC38HC4x family are fixed frequency current-mode PWM controllers with 1A drive current capability. Micrel’s BiCMOS devices are pin-compatible with 384x bipolar de- vices. Their high output drive, with fast rise and fall times, combined with low startup ...
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... Contact Factory –40°C to +85°C Contact Factory –40°C to +85°C Contact Factory –40°C to +85°C Contact Factory –40°C to +85°C MIC38HC42YM –40°C to +85°C MIC38HC43YM –40°C to +85°C MIC38HC44YM –40°C to +85°C MIC38HC45YM – ...
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Pin Configuration MIC38HC4x COMP ISNS 3 RT/CT 4 8-Pin DIP (N) 8-Lead SOIC (M) Pin Description Pin Number Pin Number Pin Name -1BN, -1BM ...
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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 (V ...
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Parameter Test Conditions Current Sense Gain Notes 2, 3 MaximumThreshold V COMP PSRR 12 Input Bias Current Delay to Output Output R ‘HC’ High I DS(ON) SOURCE R ‘HC’ Low I DS(ON) SINK Rise Time T A Fall Time T ...
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Typical Characteristics Oscillator Frequency Configuration 100 200pF 470pF 1nF 1.8nF 10 4.7nF 10nF V = 15V DD 1 1x10 4 1x10 5 1x10 6 OSCILLATOR FREQUENCY (Hz) Current Sense Amplifier vs. Error Amplifier Output 1.2 1.0 125°C 0.8 0.6 25°C ...
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Package Information 0.018 (0.57) .235 (5.969) .215 (5.461) .160 MAX (4.064) .160 (4.064) .100 (2.540) April 2005 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 (0.952) ...
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MAX) 0.057 (1.45) 0.049 (1.25) MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in ...