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RT9173BPS Datasheet(PDF) 5 Page - Richtek Technology Corporation |
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RT9173BPS Datasheet(HTML) 5 Page - Richtek Technology Corporation |
5 / 13 page RT9173B 5 DS9173B-09 March 2007 www.richtek.com Electrical Characteristics (VIN = 2.5V, VCNTL = 3.3V, VREFEN = 1.25V, COUT = 10 μF (Ceramic), TA = 25°C unless otherwise specified) Absolute Maximum Ratings (Note 1) Input Voltage ------------------------------------------------------------------------------------------------------------ 7V Power Dissipation, PD @ TA = 25 °C SOP-8 -------------------------------------------------------------------------------------------------------------------- 0.625W TO-252 ------------------------------------------------------------------------------------------------------------------- 1.471W Package Thermal Resistance (Note 5) SOP-8, θJA -------------------------------------------------------------------------------------------------------------- 160°C/W SOP-8, θJC -------------------------------------------------------------------------------------------------------------- 23°C/W TO-252, θJA ------------------------------------------------------------------------------------------------------------- 68°C/W TO-252, θJC ------------------------------------------------------------------------------------------------------------- 8°C/W Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------------------- 260 °C Junction Temperature ------------------------------------------------------------------------------------------------ 150 °C Storage Temperature Range ---------------------------------------------------------------------------------------- –65 °C to 150°C ESD Susceptibility (Note 2) HBM (Human Body Mode) ------------------------------------------------------------------------------------------ 2kV MM (Machine Mode) -------------------------------------------------------------------------------------------------- 200V Recommended Operating Conditions (Note 3) Junction Temperature Range ---------------------------------------------------------------------------------------- –40°C to 125°C Parameter Symbol Test Conditions Min Typ Max Units Output Offset Voltage VOS IOUT = 0A, Figure 1 (Note 4) −20 0 20 mV IL : 0A → 2A, Figure 1 Load Regulation ΔVLOAD IL : 0A → -2A −20 0 20 mV VIN 1.7 2.5/1.8 -- Input Voltage Range (DDR I/II) VCNTL Keep VCNTL ≥ VIN on operation power on and power off sequences 3 3.3/5 6 V Operating Current of VCNTL ICNTL No Load -- 1 2.5 mA Current In Shutdown Mode ISHDN VREFEN < 0.2V, RL = 180Ω, Figure 2 -- 50 90 μA Short Circuit Protection Current limit ILIM Figure 3,4 2.2 2.6 -- A Over Temperature Protection Thermal Shutdown Temperature TSD 3.3V ≤ VCNTL ≤ 5V 125 170 -- °C Thermal Shutdown Hysteresis ΔTSD 3.3V ≤ VCNTL ≤ 5V -- 35 -- °C Shutdown Function Output = High, Figure 5 0.6 -- -- Shutdown Threshold Trigger Output = Low, Figure 5 -- -- 0.2 V |
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