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Datasheet Microchip MIC3809YMM-TR

Part NumberMIC3809YMM-TR

The MIC3808 and MIC3809 are a family of complementary output push-pull PWM control ICs that feature high speed and low power consumption


  • Download » Datasheet PDF, 149 Kb, Revision: 11-09-2015
    MIC3808/3809 - Push-Pull PWM Controller
    Docket ↓
    MIC3808/3809 Micrel MIC3808/3809
    Push-Pull PWM Controller General Description Features 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
    applications where high output current, small size, and high
    efficiency are required.
    The dual-ended push-pull architecture of the MIC3808/9
    allows more efficient utilization of the transformer than singleended topologies, allowing smaller size dc/dc solutions.
    Additionally, the out-of-phase push-pull topology allows a
    higher effective duty cycle, reducing input and output ripple
    as well as stress on the external components. The dead-time
    between the two outputs is adjustable between 60ns to
    200ns, limiting the duty cycle of each output stage to less than
    The MIC3808/9 are built on a low-power, high-speed BiCMOS
    process. The 130ВµA start-up current and 1mA run-current
    reduce the size of the start-up circuitry and allow high
    efficiency even at light loads. The high-speed internal 4MHz
    error amplifier allows MIC3808/9 operation up to 1MHz.
    The MIC3808 has a turn-on threshold of 12.5V whereas the
    MIC3809 has a lower turn-on threshold of 4.3V. Both devices
    are available in SOP-8 and MSOP-8 package options with an ...



Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)




Current Limit / Short Circuit ProtectionTrue
Duty Cycle Max0.49 %
Input UVLO Typ4.3 V
Internal Voltage BiasTrue
Maximum Input Voltage15 V
Minimum Input Voltage4.1 V
Operating FrequencyAdj. to 1M Hz
Operating Supply Current1 mA
Operating Temperature Range-40 to +85 °C
Soft StartTrue
Supported Outputs1
Supported TopologiesPush-Pull, Half Bridge, Full Bridge

Eco Plan


Other Options


Moldel Line

Series: MIC3809 (4)

Manufacturer's Classification

  • Power Management > PWM Controllers > Flyback/Fwd/Push-Pull Products

Other Names:


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