Purchase MIC3808/3809, In-stock MIC3808/3809 From SeekIC.
Part Number: MIC3808/3809
Description: The MIC3808 and MIC3809 are a family of complementary output push-pu...
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MIC3808/3809
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DataSheet
General Description
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 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 single-ended 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 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 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 operating range of –40°C to +85°C.
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PDF/DataSheet Download
- Datasheet: MIC
- File Size: 15788 KB
- Manufacturer: STMicroelectronics
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- ·MIC10937P-40/
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- ·MIC10939J-50
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- ·MIC10939P-50
- MICREL [Micrel Semiconductor]
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- ·MIC10939PE-50
- MICREL [Micrel Semiconductor]
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