XCL101 datasheet(12/19 Pages) TOREX

12 / 19 page

12/19

XCL101Series

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NOTE ON USE (Continued)

13. If the CL capacity or load current becomes excessively large, the output voltage start-up time, when the power is turned on, will increase, so

the coil current might be superimposed during the time it takes for the output voltage to become sufficiently higher than the VBAT voltage.

14. If the input voltage is higher than the output voltage, then the circuit automatically enters the through mode. When the input voltage becomes

close to the output voltage, there could be repeated switching between the boost mode and through mode causing the ripple voltage to

fluctuate. (Refer to the graphic below)

15. If a different power supply is connected from an external source to the XCL101A/XCL101C, the IC could be destroyed.

16. For temporary, transitional voltage drop or voltage rising phenomenon, the IC is liable to malfunction should the ratings be exceeded.

17. Torex places an importance on improving our products and their reliability. We request that users incorporate fail-safe designs and post-aging

protection treatment when using Torex products in their systems.

18. With the XCL101A, when the VBAT or VCE power supply is input, if the VOUT pin voltage does not exceed VBAT -0.35V, which can happen due to

the load current being more than the inrush protection current, step-up mode or through mode operations won’t function correctly.

19. With the XCL101C, when the VBAT power supply is input, if the VOUT pin voltage does not exceed VBAT -0.35V, which can happen due to the

load current being more than the inrush protection current, by pass mode operations won’t function correctly.

VBAT=VCE=3.316V,VOUT=3.412V,IOUT=3mA,L=4.7μH,CL=10μF,Ta=25℃

VOUT

VBAT:100mV/div

VLX

200[μs/div]

VOUT:100mV/div

VBAT

VLX:2.0V/div

XCL101 Datasheet(PDF) 12 Page - Torex Semiconductor