Datasheet Microchip MIC3838YMM The MIC3838/39 are a family of complementary output push-pull PWM control ICs that feature high speed and low power consumption Datasheets- 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 50%. The MIC3838 has a turn-on threshold of 12.5V whereas the ...
Prices
StatusLifecycle Status | Production (Appropriate for new designs but newer alternatives may exist) |
---|
PackagingParametricsCurrent Limit / Short Circuit Protection | True |
---|
Duty Cycle Max | 0.49 % |
---|
Input UVLO Typ | 12.5 V |
---|
Internal Voltage Bias | True |
---|
Maximum Input Voltage | 15 V |
---|
Minimum Input Voltage | 8.3 V |
---|
Operating Frequency | Adj. to 1MHz Hz |
---|
Operating Supply Current | 1.5 mA |
---|
Operating Temperature Range | -40 to +85 °C |
---|
Soft Start | True |
---|
Supported Outputs | 1 |
---|
Supported Topologies | Push-Pull, Half Bridge, Full Bridge |
---|
Eco PlanOther OptionsMIC3839 Moldel LineSeries: MIC3838 (2) Manufacturer's Classification- Power Management > PWM Controllers > Flyback/Fwd/Push-Pull Products
|
|