FR9809 Description
FR9809 is a high-efficiency synchronous step-down DC/DC converter that employs a special process technique to obtain very low RDS(ON) for the internal metal oxide semiconductor field-effect transistor (MOSFET). The input operation voltage is in a wide range from 4.75V to 21V, and continuous load current capability is 5A. Control circuit is designed by a particular current mode which provides fast transient response...
FR9809 Key Features
- High Efficiency up to 90%
- Internal MOSFET RDS(ON): 110mΩ 20mΩ
- Internal pensation
- Input Operation Voltage Range: 4.75V to 21V
- 5A Continuous Output Current
- Output Voltage down to 0.805V
- 500KHz Oscillation Frequency
- Sync to External Clock from 300KHz to 800KHz
- Cycle-by-Cycle Current Limit
- Under Voltage Lockout