MIC3809BM Micrel Inc, MIC3809BM Datasheet
MIC3809BM
Specifications of MIC3809BM
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MIC3809BM Summary of contents
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MIC3808/3809 General Description The MIC3808 and MIC3809 are a family of complementary output push-pull PWM control ICs that feature high speed and low power consumption. The MIC3808/9 are ideal for telecom level (36V to 75V) isolated step down dc/dc conversion ...
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... MIC3808/3809 Ordering Information Part Number Standard Lead-Free MIC3808BM MIC3808YM MIC3809BM MIC3809YM MIC3808BMM MIC3808YMM MIC3809BMM MIC3809YMM Pin Configuration Pin Description Pin Number Pin Name 1 COMP MIC3808/3809 Turn On Turn Off Threshold Threshold Temperature Range 12.5V 8.3V 4.3V 4.1V 12.5V 8.3V 4.3V 4.1V COMP ...
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MIC3808/3809 Pin Description Pin Number Pin Name 5 GND 6 OUTB 7 OUTA 8 VDD April 2005 Pin Function Ground Alternating high current output stages. Both stages are capable of driving the gate of a power MOSFET. Each stage is ...
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MIC3808/3809 Absolute Maximum Ratings 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, CS) ........................ –0. Junction ...
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MIC3808/3809 Parameter Condition Undervoltage Lockout Section Start Threshold MIC3808, Note 9 MIC3809 Minimum Operating Voltage MIC3808 After Start MIC3809 Hysteresis MIC3808 MIC3809 Soft Start Section COMP Rise Time FB = 1.8V, Rise from 0. Overall Section Startup Current ...
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MIC3808/3809 Typical Characteristics MIC3808 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0 (V) DD MIC3809 Oscillator Frequency Variation vs. Temperature ...
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MIC3808/3809 V Supply Current DD vs. Temperature 10V -40 - 100120140 TEMPERATURE (°C) April 2005 Error Ampifier 120 180 160 100 140 80 120 60 ...
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MIC3808/3809 Functional Diagram FB Overcurrent Comparator 0.75V 2. —1V DD 0.5V Soft Start Voltage Reference Functional Description The MIC3808 high-speed power supply controller with push-pull output drive capability. MIC3808 has a higher V turn-on ...
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MIC3808/3809 VDD 0.2V Figure 2. Oscillator The voltage source to the resistor/capacitor timing compo- nents The internal turn-off comparator threshold in the DD oscillator circuit is V /2. This ...
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MIC3808/3809 Output Drivers OUTA and OUTB are alternating output stages, which switch at half the oscillator frequency. A toggle flip-flop in the MIC3808/9 guarantee both outputs will not the same time. The RC discharge time is the ...
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MIC3808/3809 Package Information 0.026 (0.65) 0.157 (3.99) 0.150 (3.81) 0.064 (1.63) 0.045 (1.14) 0.122 (3.10) 0.112 (2.84) 0.036 (0.90) 0.032 (0.81) 0.012 (0.3) 0.0256 (0.65) TYP MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 ...