UC3655L-33-AF5-R datasheet(6/9 Pages) UTC

部件名	UC3655L-33-AF5-R

功能描述	500mA SYNCHRONOUS STEP-DOWN DC/DC CONVERTERS

PDF	9 Pages

Scroll/Zoom	100%

制造商	UTC [Unisonic Technologies]

网页	http://www.utc-ic.com

标志

6 / 9 page

UC3655

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

6 of 9

www.unisonic.com.tw

QW-R502-280.F



OPERATIONAL EXPLANATION

CE / MODE Pin Function

When a low level signal is input to the CE/MODE pin the operation of the UC3655 series will enter into the shut down

mode. In this mode, the current consumption occurs only in the detector and is 0 μA (TYP.), with a state of high

impedance at the Lx pin and VOUT pin. By inputting a high level signal to the CE/MODE pin the IC starts its

operation. The input of the CE/MODE pin is a CMOS input and its sink current is 0 μA (TYP.).

UC3655

series - Examples of how to use CE/MODE pin

VDD

CE/MODE

SW_CE

VIN

SW_CE

STATUS

Stand-by

OFF

Operation

SW_CE

STATUS

Operation

OFF

Stand-by



FUNCTIONS

CE/MODE

VOLTAGE LEVEL

OPERATION

H Level

VIN-0.3V≦H level≦VIN

Synchronous PWM/PFM Automatic Switching Control

M Level

0.9V≦M Level≦VIN-1.0V

L Level

0V≦L Level≦0.3V

Stand-by

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