Microchip MIC3809YM

Manufacturer No:

MIC3809YM

Manufacturer:

Microchip

Package:

8-SOIC (0.154, 3.90mm Width)

Description:

Push-Pull DC/DC Controller

Quantity:

Delivery:

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In Stock :Available

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MIC3809YM information

Microchip MIC3809YM technical specifications, attributes, parameters and parts with similar specifications to Microchip MIC3809YM.

Type
Parameter

Current Limit / Short Circuit Protection
Yes

Max Duty Cycle (%)
0.49

Input UVLO Typ (V)
4.3

Internal Voltage Bias
Yes

Input Voltage Max
15

Input Voltage Min
4.1

Operating Supply Current (mA)
1

Package
8/SOP, 8/MSOP

Soft Start
1

Supported Outputs
1

Supported Topologies
Push-Pull, Half Bridge, Full Bridge

Download datasheets and manufacturer documentation for Microchip MIC3809YM.

Data Sheets:

d0455cdfd7c577bf4bc5778a6318a4c6.pdf

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.

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

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