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RT5002 Datasheet(PDF) 38 Page - Richtek Technology Corporation |
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RT5002 Datasheet(HTML) 38 Page - Richtek Technology Corporation |
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38 / 40 page  RT5002 38 DS5002-00 November 2011 www.richtek.com Protection Type Threshold (Typical) Refer to Electrical spec. Protection Methods IC Shutdown Delay Time Reset Method SYS UVLO SYS < 1.3V PMU Shutdown. No-delay VDDM power reset or EN1234 pin set to low OVP VDDM > 6V Automatic reset at VDDM < 5.75V 100ms VDDM power reset or EN1234 pin set to low VDDM UVLO VDDM < 2.4V PMU Shutdown. No-delay VDDM power reset or EN1234 pin set to low Current limit N-MOSFET current > 3A N-MOSFET off, P-MOSFET off. Automatic reset at next clock cycle. 100ms VDDM power reset or EN1234 pin set to low PVD1 OVP PVD1 > 6V N-MOSFET off, P-MOSFET off. No-delay VDDM power reset or EN1234 pin set to low PVD1 UVP PVD1 < (VSYS − 0.8V) or PVD1 < 1.28V after soft-start end. N-MOSFET off, P-MOSFET off. 100ms VDDM power reset or EN1234 pin set to low FB1 UVP FB1 < 0.4V after pre-charge N-MOSFET off, P-MOSFET off No-delay VDDM power reset or EN1234 pin set to low CH1 Step-Up FB1 Over Load (OL) FB1 < 0.7V PMU Shutdown when OL occur each cycle until 100ms. 100ms VDDM power reset or EN1234 pin set to low Current limit P-MOSFET current > 1.8A N-MOSFET off, P-MOSFET off. Automatic reset at next clock cycle. 100ms VDDM power reset or EN1234 pin set to low FB2 UVP FB2 < 0.4V after soft-start end. N-MOSFET off, P-MOSFET off. 100ms VDDM power reset or EN1234 pin set to low CH2 Step-Down FB2 Over Load FB2 < 0.7V PMU Shutdown when OL occur each cycle until 100ms. 100ms VDDM power reset or EN1234 pin set to low Current limit P-MOSFET current > 1.6A N-MOSFET off, P-MOSFET off. Automatic reset at next clock cycle. 100ms VDDM power reset or EN1234 pin set to low FB3 UVP FB3 < 0.4V after soft-start end. N-MOSFET off, P-MOSFET off. 100ms VDDM power reset or EN1234 pin set to low CH3 Step-Down FB3 Over Load FB3 < 0.7V PMU Shutdown when OL occur each cycle until 100ms. 100ms VDDM power reset or EN1234 pin set to low Current limit P-MOSFET current > 1.6A N-MOSFET off, P-MOSFET off. Automatic reset at next clock cycle. 100ms VDDM power reset or EN1234 pin set to low FB4 UVP FB4 < 0.4V after soft-start end. N-MOSFET off, P-MOSFET off. 100ms VDDM power reset or EN1234 pin set to low CH4 Step-Down FB4 Over Load FB4 < 0.7V PMU Shutdown when OL occur each cycle until 100ms. 100ms VDDM power reset or EN1234 pin set to low To be continued |
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