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APW9209

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Dual 2.4MHz, 8A/2A Synchronous Buck Converter

Features
  • Input Voltage range: 2.5V to 5.5V
  • 8A/2A Output Current on Channel 1/2
  • Typical 0.6V ±1% Internal Reference Voltage
  • 2.4MHz Constant Frequency Operation
  • Current Mode Operation
  • Internally Compensated
  • Built in OVP, UVP, Current Limit and OTP
  • Low Cost VTQFN3x2-18 package
  • Lead Free and Green Devices Available (RoHS Compliant)
  • Force PWM Mode Operation
  • DyncBandwidthTM Technology
  • SpeedTransTM Technology (Channel 1 only)
  • PowerGood Monitoring (Channel 1 only)

General Description
The APW9209 is a two-channel synchronous mode PWM converter with 8A continuous current capability for one channel and 2A continuous current capability for the other one. Another feature of this part is its ability to automatically optimize its BW (DyncBandwidth) to allow better dynamic response once it is synchronized to a higher external clock. The converter synchronizes its switching frequency to two times the frequency on the EN/SYNC pin. The APW9209 uses a peak current mode control scheme to regulate the output voltage. The internal switching frequency is set at 2.4MHz. While the EN/SYNC pin supports external clock synchronization. DyncBandwidthTM improves transient response when receiving higher external Synchronization clock. The APW9209 also equips a technique: SpeedTransTM which allows improving transient response without complex external compensation circuits design. The APW9209 is also equipped with Power-on-reset, soft-start, and complete protections, over-temperature, over-voltage, under-voltage and over-current of the converter. The APW9209 is offered in a VTQFN3x2-18 package allowing small size while having an excellent thermal capability for power dissipation.

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