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RT9183H-18CS Datasheet(PDF) 5 Page - Richtek Technology Corporation |
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RT9183H-18CS Datasheet(HTML) 5 Page - Richtek Technology Corporation |
5 / 15 page RT9183 5 DS9183-14 April 2008 www.richtek.com Parameter Symbol Test Conditions Min Typ Max Units Current Limit ILIM 2 3.2 4.2 A IOUT = 0.5A -- 110 300 IOUT = 1.0A -- 220 400 Dropout Voltage (Note 4) VDROP IOUT = 1.5A -- 330 500 mV Line Regulation ΔVLINE VOUT + 0.7V < VIN < 5.5V IOUT = 10mA -- 0.035 0.18 %/V Load Regulation (Note 5) (Fixed Output Voltage) ΔVLOAD 1mA < IOUT < 1.5A -- 22 45 mV Thermal Shutdown Temperature TSD -- 170 -- °C Thermal Shutdown Hysteresis ΔTSD -- 30 -- °C Logic-Low Voltage VIL VIN = 5.5V -- -- 0.6 EN Threshold Logic-High Voltage VIH VIN = 5.5V 1.8 -- -- V Enable Pin Current IEN VIN = 5.5V, Enable -- 0.1 1 uA ADJ Reference Voltage Tolerance VREF 0.784 0.8 0.816 V Adjust Pin Current IADJ VADJ = VREF -- 10 100 nA Adjust Pin Threshold VTH(ADJ) 0.05 0.1 0.2 V Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. Note 2. Devices are ESD sensitive. Handling precaution is recommended. Note 3. The device is not guaranteed to function outside its operating conditions. Note 4. The dropout voltage is defined as VIN -VOUT, which is measured when VOUT is VOUT(NORMAL) − 100mV. Note 5. Regulation is measured at constant junction temperature by using a 20ms current pulse. Devices are tested for load regulation in the load range from 10mA to 1.5A. Note 6. Quiescent, or ground current, is the difference between input and output currents. It is defined by IQ = IIN - IOUT under no load condition (IOUT = 0mA). The total current drawn from the supply is the sum of the load current plus the ground pin current. Note 7. Standby current is the input current drawn by a regulator when the output voltage is disabled by a shutdown signal (VEN >1.8V ). It is measured with VIN = 5.5V. Note 8. θJA is measured in natural convection (still air) at TA = 25°C with the component mounted on a low effective thermal conductivity test board of JEDEC 51-3 thermal measurement standard. And the copper area of PCB layout is 4mm x 2.5mm on SOT-223, 10mm x 10mm on TO-252, 14mm x 14mm on TO-263 for thermal measurement. |
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