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T8322AD Datasheet(PDF) 7 Page - Taiwan Memory Technology |
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T8322AD Datasheet(HTML) 7 Page - Taiwan Memory Technology |
7 / 10 page TE CH tm Preliminary T8322AD TM Technology, Inc. reserves the right P. 7 Publication Date: Sep . 2014 to change products or specifications without notice. Revision:C Applications Information Setting nominal average output current with external resistor RS The nominal average output current in the LED(s) is determined by the value of the external current sense resistor (RS) connected between VIN and ISENSE and is given by: IOUTnom = 0.1/RS [for RS ≥ 0.066 ohm] The table below gives values of nominal average output current for several preferred values of current setting resistor (RS) in the typical application circuit : RS (ohm) 0.067 0.125 0.2 0.285 Nominal average output current (mA) 1500 800 500 350 The above values assume that the EN pin is floating. Note: that RS = 0.125 ohm is the minimum allowed value of sense resistor under these conditions to maintain switch current below the specified maximum value. Shutdown mode Taking the EN pin to a voltage below 0.5V for more than approximately 100us, will turn off the output and supply current will fall to a low standby level of 35uA nominal. |
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