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Manufacturer Part #


MIC3809 Series 2 mA 1 MHz Surface Mount Push-Pull PWM Controller - SOIC-8

ECAD Model:
Mfr. Name: Microchip
Standard Pkg:
Product Variant Information section
Date Code: 2105
Product Specification Section
Technical Attributes
Attributes Table
Supply Current-Max: 2mA
Supply Voltage: 2V to 14V
Frequency-Max: 1MHz
Duty Cycle-Min: 0%
Duty Cycle-Max: 50%
Operating Temp Range: -40°C to +85°C
Package Style:  SOIC-8
Mounting Method: Surface Mount
Features & Applications

The MIC3809YM TR is a family of complementary output push-pull PWM control ICs that feature high speed and low power consumption. MIC3809YM TR is ideal for telecom level (36 V to 75 V) isolated step down dc/dc conversion applications where high output current, small size, and high efficiency are required.

The MIC3808/9 are built on a low-power, high-speed BiCMOS process. The 130μA 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 4 MHz error amplifier allows MIC3808/9 operation up to 1 MHz. The MIC3808 has a turn-on threshold of 12.5 V whereas the MIC3809 has a lower turn-on threshold of 4.3 V. Both devices are available in SOP-8 and MSOP-8 package options with an operating range of –40°C to +85°C.

Key Features:

  • Dual output drive stages in push-pull configuration.
  • Leading edge current-sense blanking.
  • 130 μA typical start-up current.
  • 1 mA typical run current.
  • Operation to 1 MHz.
  • Internal soft start.
  • On-chip error amplifier with 4 MHz gain bandwidth product.
  • On-chip VDD clamping.
  • Output drive stages capable of 500 mA peak source current, 1 A peak sink current.


  • High efficiency “brick” power supply modules.
  • Half bridge converters.
  • Full bridge converters.
  • Push-pull converters.
  • Voltage-fed push-pull converters.
  • Telecom equipment and power supplies.
  • Networking power supplies.
  • Industrial power supplies.
  • 42 V automotive power supplies.
  • Base stations.
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