Electronics ru
Advanced Search +

Datasheet Microchip MIC3838


The MIC3838/39 are a family of complementary output push-pull PWM control ICs that feature high speed and low power consumption


  • Download » Datasheet PDF, 195 Kb, Revision: 11-09-2015
    MIC3838/3839 - Flexible Push-Pull PWM Controller
    Docket ↓
    MIC3838/3839 Micrel MIC3838/3839
    Flexible Push-Pull PWM Controller General Description Features 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
    applications where high output current, small size, and high
    efficiency are required
    The MIC3838/9 are designed for high flexibility with minimum
    pin-count. The devices are easily configurable for either
    voltage-mode or current-mode control. Additionally, the
    MIC3838/9 can easily implement a volt-second clamp that
    automatically limits the duty cycle during input transients,
    allowing designers to use the smallest possible transformers
    and power components. A 3V reference output is also available that eliminates the need for an external reference.
    The dual-ended push-pull architecture of the MIC3838/9
    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 MIC3838 has a turn-on threshold of 12.5V whereas the ...



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




Current Limit / Short Circuit ProtectionTrueTrue
Duty Cycle Max, %0.490.49
Input UVLO Typ, V12.512.5
Internal Voltage BiasTrueTrue
Maximum Input Voltage, V1515
Minimum Input Voltage, V8.38.3
Operating Frequency, HzAdj. to 1MHzAdj. to 1MHz
Operating Supply Current, mA1.51.5
Operating Temperature Range, °C-40 to +85-40 to +85
Soft StartTrueTrue
Supported Outputs11
Supported TopologiesPush-Pull, Half Bridge, Full BridgePush-Pull, Half Bridge, Full Bridge

Eco Plan


Other Options


Moldel Line

Series: MIC3838 (2)

Manufacturer's Classification

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

Slices ↓
Radiolocman facebook Radiolocman twitter Radiolocman google plus