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fr9206

production

18v, 3a synchronous step-down dc/dc converter

applications

set-top box (stb)
router
robot vacuum
introduction






the fr9206 is a synchronous step-down dc/dc converter with fast constant on time (fcot) mode control. the device provides 4.5v to 18v input voltage range and 3a continuous load current capability. operation frequency depends on input and output voltage condition. at light load condition, the fr9206 can operate at power saving mode to support high efficiency and reduce power loss.
the fr9206 fault protection includes cycle-by-cycle current limit, short circuit protection, uvlo and thermal shutdown. the soft-start function prevents inrush current at turn-on. the fr9206 use fast constant on time control that provides fast transient response, the noise immunity and all kinds of very low esr output capacitor for ensuring performance stabilization.
the fr9206 is offered in tsot-23-6 and sot-563-6 packages, which provides good thermal conductance.

feature
  • low rds(on) integrated power mosfet (80mω/40mω)
  • wide input voltage range: 4.5v to 18v
  • output voltage range: 0.768v to 8v(fr9206s9)
  • output voltage range: 0.8v to 8v(fr9206sd)
  • 3a output current
  • fcot mode enables fast transient response
  • pseudo 500khz frequency
  • input under voltage lockout
  • internal 1.5ms soft-start
  • cycle-by-cycle current limit
  • hiccup short circuit protection
  • over temperature protection with auto recovery
  • tsot-23-6 and sot-563-6 packages
package & pins
purchase
part name package request
fr9206s9 tsot-23-6

sample request

technical support

fr9206sd sot-563-6

sample request

technical support

documents
title file release date
fr9206-18v 3a synchronous step-down 2023/01/13
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