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RT9261A-35CX Datasheet(PDF) 5 Page - Richtek Technology Corporation |
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RT9261A-35CX Datasheet(HTML) 5 Page - Richtek Technology Corporation |
5 / 14 page Preliminary RT9261/A DS9261/A-03 January 2002 www.richtek-ic.com.tw 5 Electrical Characteristics (Refer to Fig. 4) Parameter Symbol Test Conditions Min Typ Max Units Output Voltage Accuracy ∆VOUT -2 -- +2 % Input Voltage VIN -- -- 7 V Start-up Voltage VST IOUT = 1mA, VIN : 0 → 2V -- 0.85 1.0 V VOUT ≤ 3.5V (1) -- 75 -- Efficiency 3.5V < VOUT ≤ 5V (2) -- 85 -- % VOUT ≤ 3.5V (1) -- 30 50 Input Current 1 3.5V < VOUT ≤ 5V (2) To be measured at VIN at no load -- 60 90 µA VOUT ≤ 3.5V (1) Input Current 2 3.5V < VOUT ≤ 5V (2) To be measured at VOUT in switch off condition -- 6 10 µA VOUT ≤ 3.5V (1) -1.5 -- -- EXT “H” Output Current 3.5V < VOUT ≤ 5V (2) VEXT = VOUT – 0.4V -2 -- -- mA VOUT ≤ 3.5V (1) 1.5 -- -- EXT “L” Output Current 3.5V < VOUT ≤ 5V (2) VEXT = 0.4V 2-- -- mA CE “H” Level VIN = VOUT × 0.9 0.4 × VOUT -- -- V CE “ L” Level VIN = VOUT × 0.9 -- -- 0.2 V CE “ H” Input Current CE = VOUT -- -- 0.5 µA CE “ L“ Input Current CE = 0V -0.5 -- -- µA Maximum Oscillator Frequency FMAX 80 120 160 KHz Oscillator Duty Cycle DOSC On (VLX ” L” ) side 65 75 85 % VLX Voltage Limit LX switch on 0.65 0.8 1.0 V Notes: (1) Unless otherwise provided, VIN = 1.8V, VSS = 0V, IOUT = 10mA, TOPT = 25 °C, and use External Circuit of Typical Application (2) Unless otherwise provided, VIN = 3V, VSS = 0V, IOUT = 10mA, TOPT = 25 °C, and External Circuit of Typical Application |
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