MIC3838BMM Micrel Inc, MIC3838BMM Datasheet
MIC3838BMM
Specifications of MIC3838BMM
Related parts for MIC3838BMM
MIC3838BMM Summary of contents
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MIC3838/3839 General Description The MIC3838 and MIC3839 are a family of complementary output push-pull PWM control ICs that feature high speed and low power consumption. The MIC3838/9 are ideal for telecom level (36V to 75V) isolated step down dc/dc conversion ...
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... MIC3838/3839 Ordering Information Part Number Standard Lead-Free MIC3838BMM MIC3838YMM MIC3839BMM MIC3839YMM Pin Configuration Pin Description Pin Number Pin Name 1 COMP ILIM 4 RAMP GND MIC3838/3839 Turn On Turn Off Threshold Threshold Temperature Range 12.5V 8.3V 4.3V 4.1V COMP 1 10 VREF VDD ILIM 3 8 OUTA ...
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MIC3838/3839 Pin Description Pin Number Pin Name 7, 8 OUTB, OUTA 9 VDD 10 VREF April 2005 Pin Function Alternating high current output stages. Both stages are capable of driving the gate of a power MOSFET. Each stage is capable ...
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MIC3838/3839 Absolute Maximum Rating Supply Voltage (I ≤10mA) ...................................... +15V DD Supply Current ........................................................... 20mA OUTA/OUTB Source Current (peak) ...................... –0.5A OUTA/OUTB Sink Current (peak) ............................ 1.0A COMP Pin .................................................................... V Analog Inputs (FB, ILIM, RAMP) ......... –0. ...
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MIC3838/3839 Parameter Condition Undervoltage Lockout Section Start Threshold MIC3838, Note 11 MIC3839 Minimum Operating Voltage MIC3838 After Start MIC3839 Hysteresis MIC3838 MIC3839 Soft Start Section COMP Rise Time FB = 1.8V, Rise from 0. Overall Section Startup Current ...
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MIC3838/3839 Typical Characteristics MIC3838 I Current DD 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1 (V) DD MIC3839 I Current DD vs. Temperature 1.400 10V ...
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MIC3838/3839 MIC3839 Error Amplifier Reference vs. Temperature 2.040 2.030 10V 2.020 2.010 2.000 TEMPERATURE (°C) MIC3838 Peak Current Limit vs. Temperature 0.545 0.540 0.535 0.530 V = 10V IN 0.525 0.520 0.515 -40 ...
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MIC3838/3839 Functional Diagram V = 36V to 75V IN 150k 13k V V Figure 2. Volt Second Clamp and Voltage Feed Forward Circuit Functional Description The MIC3838 high-speed power supply controller with push-pull output drive capability. MIC3838 has ...
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MIC3838/3839 Soft Start The soft start feature helps reduce surge currents at the power supply input source. An internal current source and capacitor ramp up from 0V to near V 1V/ms. The soft start feature limits the output voltage of ...
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MIC3838/3839 Max ON time dead time C Pin Oscillator eset dead time Front edge blanking AMP Pin Minimum ON time OUTA OUTB Figure 4. Timing Diagram Error Amplifier The error amplifier is part of the voltage control loop of the ...
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MIC3838/3839 Package Information 3.15 (0.122) 2.85 (0.114) 0.30 (0.012) 0.15 (0.006) 0.50 BSC (0.020) MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this datasheet is believed to ...