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RT9818D-49PB Datasheet(PDF) 3 Page - Richtek Technology Corporation |
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RT9818D-49PB Datasheet(HTML) 3 Page - Richtek Technology Corporation |
3 / 14 page RT9818 3 DS9818-05 March 2007 www.richtek.com Absolute Maximum Ratings (Note 1) Terminal Voltage (with Respect to GND) VDD ------------------------------------------------------------------------------------------------------------------------ −0.3V to 6.0V All Other Inputs -------------------------------------------------------------------------------------------------------- −0.3V to VDD+0.3V Input Current, IVDD ----------------------------------------------------------------------------------------------------- 20mA Power Dissipation, PD @ TA = 25 °C SC-70 / SC-82 ---------------------------------------------------------------------------------------------------------- 0.25W SOT-23-3 ---------------------------------------------------------------------------------------------------------------- 0.4W SOT-23-5 ---------------------------------------------------------------------------------------------------------------- 0.4W SOT-89 ------------------------------------------------------------------------------------------------------------------- 0.55W Package Thermal Resistance (Note 4) SC-70 / SC-82, θJA ---------------------------------------------------------------------------------------------------- 400°C/W SOT-23-3, θJA ----------------------------------------------------------------------------------------------------------- 250°C/W SOT-23-5, θJA ----------------------------------------------------------------------------------------------------------- 250°C/W SOT-89, θJA ------------------------------------------------------------------------------------------------------------- 180°C/W Lead Temperature (Soldering, 10sec.) ---------------------------------------------------------------------------- 260 °C Storage Temperature Range ---------------------------------------------------------------------------------------- −65°C to 125°C ESD Susceptibility (Note 2) HBM (Human Body Mode) ------------------------------------------------------------------------------------------ 2kV MM (Machine Mode) -------------------------------------------------------------------------------------------------- 200V Electrical Characteristics (VDD = 3V, unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Units Operating VDD (VOUT) Range VDD 0.9 -- 6 V Supply Current IDD VTH = 3V , VDD = 4.5V TA = 27°C -- 3 8 μA Reset Threshold VTH TA = 27°C -- 1.2 to 5.0 -- V Threshold Voltage Accuracy ΔVTH TA = 27°C −1.5 -- +1.5 % VDD Drop to Reset Delay tRD Drop = VTH -125mV -- 20 -- μs Reset Active Time Out Period RT9818A/E tRP VDD ≥ 1.02×VTH -- 0 -- ms RT9818B/F 35 55 75 RT9818C/G 143 220 297 RT9818D/H 292 450 608 RESET Output Voltage Low (Note 5) VOL 3 = VDD < VTH ISINK >3.5mA -- -- 0.4 V Hysteresis Width VHYS 0.01VTH V Recommended Operating Conditions (Note 3) Junction Temperature Range ---------------------------------------------------------------------------------------- −40°C to 125°C Ambient Temperature Range ---------------------------------------------------------------------------------------- −40°C to 85°C |
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