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EC4211 Datasheet(PDF) 3 Page - E-CMOS Corporation |
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EC4211 Datasheet(HTML) 3 Page - E-CMOS Corporation |
3 / 8 page E-CMOS Corp. (www.ecmos.com.tw) 3D03N Rev. F003 EC4211 Constant Current Linear LED Driver Page 3of 8 Control Circuits VIN VLED RGAIN REXT Protection Circuits FUNCTION DIAGRAM PIN DESCRIPTIONS TO252-5L Package DFN-8L / SOP-8L Package PIN Symbol Description 1 REXT An external resistor between REXT and VLED pin sets different current regulation for LED strings. 2 NC No internal mechanically connection. Leave this pin open. 3 VLED The LED strings are connected from this pin to ground. 4 VIN Input supply voltage. 5 RGAIN Programmable thermal foldback protection for current regulation to limit die temperature during high power operation or high ambient temperature conditions. PIN Symbol Description 1 RGAIN Programmable thermal foldback protection for current regulation to limit die temperature during high power operation or high ambient temperature conditions. 2 VIN Input supply voltage. 3 NC No internal mechanically connection. Leave this pin open. 4 REXT An external resistor between REXT and VLED pin sets different current regulation for LED strings. 5, 6, 7, 8 VLED The LED strings are connected from these pins to ground. Fig. 2 Detailed Block Diagram |
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