전자부품 데이터시트 검색엔진 |
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UC1842 데이터시트(PDF) 5 Page - Texas Instruments |
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UC1842 데이터시트(HTML) 5 Page - Texas Instruments |
5 / 28 page www.ti.com ERROR AMP CONFIGURATION _ + 2.5 V 2 1 VFB COMP ZF ZI 0.5 mA UNDER-VOLTAGE LOCKOUT VCC <17 mA <1 mA VOFF VON VCC 7 VCC ON/OFF Command to REST of IC UC1842 UC1844 UC1843 UC1845 VON VOFF 16 V 10 V 8.4 V 7.6 V CURRENT SENSE CIRCUIT Peak Current (IS) is Determined By The Formula ERROR AMP 2R R 1 V 5 COMP CURRENT SENSE GND IS R C RS CURRENT SENSE COMPARATOR ,1.0 V RS ISMAX 1 3 5 UC1842/3/4/5 UC2842/3/4/5 UC3842/3/4/5 SLUS223C – APRIL 1997 – REVISED JUNE 2007 Error amp can source or sink up to 0.5 mA. During under-voltage lock-out, the output drive is biased to sink minor amounts of current. Pin 6 should be shunted to ground with a bleeder resistor to prevent activating the power switch with extraneous leakage currents. A small RC filter may be required to suppress switch transients. 5 Submit Documentation Feedback |
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