4

 2005 Semtech Corp.

www.semtech.com

SC1485

POWER MANAGEMENT

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Notes:

(1) When the inductor is in continuous and discontinuous conduction mode, the output voltage will have a DC

regulation level higher than the error-comparator threshold by 50% of the ripple voltage.

(2) Using a current sense resistor, this measurement relates to PGND minus the voltage of the source on the low-

side MOSFET. These values guaranteed by the ILIM Source Current and Current Comparator Offset tests.

(3) clks = Switching cycles.

(4) Guaranteed by design. See Shoot-Through Delay Timing Diagram on Page 6.

Ω (typ.) until LX = 1.5V (typ.).

At this point, an additional pullup device is activated, reducing the resistance to 2

Ω (typ.). This negates the need for

an external gate or boost resistor.

Test Conditions: V

Electrical Characteristics (Cont.)