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UC2903N 数据表(PDF) 7 Page - Texas Instruments |
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UC2903N 数据表(HTML) 7 Page - Texas Instruments |
7 / 16 page Fault Windows Scaled Independently Fault window for the Sense Input, in percent, is: –10 (VADJ) • R3 + R1R2/( R1 + R2) R3 , for: VS (NOM) • R2 R1 + R2 =2.5V Monitored SupplyVoltage VS R1 R2 R3 UC1903 SENSE1-4INPUT 2.5V REF. Fault window for the sense input, in percent, is: • R2 R1 + R2 SENSE INPUT R1 R2 UC1903 G.P.OP-AMP 2.5V REF. SENSE1-4INPUT ±10(V ) ADJ UC1903 UC2903 UC3903 www.ti.com ........................................................................................................................................ SLUS233A – OCTOBER 1999 – REVISED SEPTEMBER 2008 In many applications, it may be desirable to monitor various supply voltages, or voltage levels, with varying fault windows. Using the reference output and external resistive dividers this is easily accomplished with the UC1903. Figure 3 and Figure 4 illustrate how the fault window at any sense input can be scaled independently of the remaining inputs. A. Using the reference output and a resistive divider, a sense input with an independently wider fault window can be generated. Figure 3. UC1903 Sense Input with an Independently Wider Fault Window A. The general purpose op-amp on the UC1903 can be used to create a sense input with an independently tighter fault window. Figure 4. UC1903 Sense Input with an Independently Tighter Fault Window Copyright © 1999–2008, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s): UC1903 UC2903 UC3903 |
类似零件编号 - UC2903N |
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类似说明 - UC2903N |
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