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TPS61089: Vout range

Part Number: TPS61089

Hi Team, 

just want to check why Vout can only be down to 4.5V. what's the limitation on this? Thanks. 

Based on duty cycle calculation, Vout should be lower @ Vin min specified in datasheet. Thanks. 

BRs

Given 

  • Hi Given,

    The output voltage range is verified with good control stability and performance with simulation and bench test. Also the device driver, protection ...function need to be powered by the Vout voltage which transfer to VCC voltage through one internal LDO. Considering the device min power voltage and LDO input, min 4.5V output is needed.

    Best Regards,

    Eric Yue