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RT9199 датащи(PDF) 2 Page - Richtek Technology Corporation |
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RT9199 датащи(HTML) 2 Page - Richtek Technology Corporation |
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2 / 13 page ![]() RT9199 2 DS9199-07 September 2007 www.richtek.com Typical Application Circuit R1 = R2 = 100k Ω, RTT = 50Ω / 33Ω / 25Ω COUT(MIN) = 10 μF (Ceramic) + 1000μF under the worst case testing condition RDUMMY = 1k Ω as for VOUT discharge when VIN is not presented but VCNTL is presented CSS = 1 μF, CIN = 470μF (Low ESR), CCNTL = 47μF VIN REFEN GND VCNTL VOUT RT9199 EN 2N7002 R 1 R 2 C SS V IN = 1.8V V CNTL = 5V C CNTL C IN R TT C OUT RDUMMY Test Circuit Figure 1. Output Voltage Tolerance, ΔVLOAD Figure 2. Current in Shutdown Mode, ISTBY VIN REFEN GND VCNTL VOUT RT9199 1.25V C OUT I L V OUT V V IN = 1.8V V CNTL = 5V VIN REFEN GND VCNTL VOUT RT9199 V IN = 1.8V 0.9V C OUT V OUT V R L 0.9V 0V R L and COUT Time deleay 0.15V A V CNTL = 5V |
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