BD9E303EFJ-LB Datasheet, PDF (21/31 Pages) Rohm – Over-Current Protection

BD9E303EFJ-LB
6. Input voltage start-up
Datasheet
Figure 45. Input Voltage Start-up Time
Soft-start function is designed for the IC so that the output voltage will start according to the time it was decided internally.
After UVLO release, the output voltage range will be less than 80% of the input voltage at soft-start operation. Please be
sure that the input voltage of the soft-start after startup is as follows.
V _IN
≥^VOUT
0.85
0.8
[V]
7. Bootstrap capacitor
Bootstrap capacitor CBOOT shall be 0.1μF. Connect a bootstrap capacitor between SW pin and BOOT pin.
For capacitance of Bootstrap capacitor, take temperature characteristics, DC bias characteristics, etc. into consideration to
set minimum value to no less than 0.047μF.
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TSZ22111•15•001
21/28
TSZ02201-0J3J0AJ00650-1-2
13.Feb.2015 Rev.002