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RT9178 Datasheet(PDF) 3 Page - Richtek Technology Corporation |
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RT9178 Datasheet(HTML) 3 Page - Richtek Technology Corporation |
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3 / 11 page  RT9178 3 DS9178-16 April 2008 www.richtek.com Recommended Operating Conditions (Note 3) Supply Input Voltage ------------------------------------------------------------------------------------------------- 2.5V to 6V Enable Input Voltage ------------------------------------------------------------------------------------------------- 0V to 6V Junction Temperature Range --------------------------------------------------------------------------------------- −40°C to 125°C Electrical Characteristics (VIN = VOUT + 1V, CIN =COUT = 1 μF, CBP = 1nF, TA = 25°C unless otherwise specified) Absolute Maximum Ratings (Note 1) Supply Input Voltage ------------------------------------------------------------------------------------------------- 7V Enable Input Voltage ------------------------------------------------------------------------------------------------- 7V Power Dissipation, PD @ TA = 25 °C SOT-23-5 --------------------------------------------------------------------------------------------------------------- 0.4W Package Thermal Resistance (Note 8) SOT-23-5, θJA ---------------------------------------------------------------------------------------------------------- 250°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 Parameter Symbol Test Conditions Min Typ Max Units Output Voltage Accuracy ΔVOUT IOUT = 1mA −2 -- +2 % Current Limit ILIM RLOAD = 1Ω -- 400 -- mA Quiescent Current (Note 6) IQ VEN > 1.0V, IOUT = 0mA -- 90 150 μA Dropout Voltage (Note 4) VDROP IOUT = 200mA -- 200 300 mV Line Regulation ΔVLINE VIN = (VOUT + 0.3V) to 6.0V, IOUT = 1mA -- -- 6 mV/V Load Regulation (Note 5) ΔVLOAD 1mA < IOUT < 200mA -- 7 20 mV Standby Current (Note 7) ISTBY VEN = GND, Shutdown -- 0.01 1 μA EN Input Bias Current IIBSD VEN = GND or VIN -- 0 100 nA Logic-Low Voltage VIL VIN = 3V to 5.5V, Shutdown -- -- 0.4 EN Threshold Logic-High Voltage VIH VIN = 3V to 5.5V, Start-Up 1.0 -- -- V Output Noise Voltage eNO 10Hz to 100kHz, IOUT = 200mA COUT = 10μF -- 50 -- μVRMS f = 100Hz -- −70 -- Power Supply Rejection Rate f = 10kHz PSRR COUT = 10μF, IOUT = 200mA -- −40 -- dB Thermal Shutdown Temperature TSD -- 150 -- °C |
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