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ENABLE

TPS61150, TPS61151

SLVS625A – FEBRUARY 2006 – REVISED MARCH 2007

DETAILED DESCRIPTION (continued)

Pulling either the SEL1 or SEL2 pin low turns off the corresponding output. If both SEL1 and SEL2 are low for

more than 40 ms, the IC shuts down and consumes less than 1

µA current. The SEL pin can also be used for

PWM brightness dimming. To improve PWM dimming linearity, soft start is disabled if the time between falling

and rising edges of two adjacent SELx pulses is less than 40 ms. See APPLICATION INFORMATION for

details.

Each SEL input pin has an internal pull down resistor to disable the device when the pin is floating.

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