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Datasheet Microchip MIC3809

ManufacturerMicrochip
SeriesMIC3809

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

Datasheets

  • 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
    50%.
    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 ...

Prices

Status

MIC3809YMMIC3809YM-TRMIC3809YMMMIC3809YMM-TR
Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)

Packaging

MIC3809YMMIC3809YM-TRMIC3809YMMMIC3809YMM-TR
PackageSOICSOICMSOPMSOP
Pins8888

Parametrics

MIC3809YMMIC3809YM-TRMIC3809YMMMIC3809YMM-TR
Current Limit / Short Circuit ProtectionTrueTrueTrueTrue
Duty Cycle Max, %0.490.490.490.49
Input UVLO Typ, V4.34.34.34.3
Internal Voltage BiasTrueTrueTrueTrue
Maximum Input Voltage, V15151515
Minimum Input Voltage, V4.14.14.14.1
Operating Frequency, HzAdj. to 1MAdj. to 1MAdj. to 1MAdj. to 1M
Operating Supply Current, mA1111
Operating Temperature Range, °C-40 to +85-40 to +85-40 to +85-40 to +85
Soft StartTrueTrueTrueTrue
Supported Outputs1111
Supported TopologiesPush-Pull, Half Bridge, Full BridgePush-Pull, Half Bridge, Full BridgePush-Pull, Half Bridge, Full BridgePush-Pull, Half Bridge, Full Bridge

Eco Plan

MIC3809YMMIC3809YM-TRMIC3809YMMMIC3809YMM-TR
RoHSCompliantCompliantCompliantCompliant

Other Options

MIC3808

Moldel Line

Series: MIC3809 (4)

Manufacturer's Classification

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

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