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LP2951ACN-3.0 Datasheet(PDF) 11 Page - ON Semiconductor |
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LP2951ACN-3.0 Datasheet(HTML) 11 Page - ON Semiconductor |
11 / 22 page LP2950, LP2951, NCV2951 http://onsemi.com 11 TYPICAL APPLICATIONS Figure 21. Lithium Ion Battery Cell Charger 1N4001 GND 4.2 V 0.025 V NC NC 50 k 5 3 Error SD GND FB 47 6 VO T SNS 2 Vout Vin 8 1 0.1 mF NC LP2951CN 2.2 mF 330 pF 806 k 1.0% 2.0 M 1.0% Lithium Ion Rechargeable Cell Unregulated Input 6.0 to 10 Vdc Figure 22. Low Drift Current Sink Error Output Shutdown Input +V = 2.0 to 30 V 1.0 mF R 5 3 Error SD GND FB 47 6 VO T SNS 2 Vout Vin 8 1 0.1 mF Load IL = 1.23/R IL Figure 23. Latch Off When Error Flag Occurs Reset +Vin Vout 1.0 mF NC NC R2 R1 470 k 5 3 Error SD GND FB 47 6 VO T SNS 2 Vout Vin 8 1 LP2951CN 470 k Error flag occurs when Vin is too low to maintain Vout, or if Vout is re- duced by excessive load current. Normally Closed 2N3906 Figure 24. 5.0 V Regulator with 2.5 V Sleep Function *Sleep Input +Vin Vout 3.3 mF NC NC 100 k 100 k 470 k 5 3 Error SD GND FB 47 6 VO T SNS 2 Vout Vin 8 1 LP2951CN 200 k 100 pF 2N3906 47 k CMOS Gate Error Output Shutdown Input LP2951CN |
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