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RT9261B37CB Datasheet(PDF) 4 Page - Richtek Technology Corporation |
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RT9261B37CB Datasheet(HTML) 4 Page - Richtek Technology Corporation |
4 / 10 page RT9261B Preliminary www.richtek-ic.com.tw DS9261B-03 September 2001 4 Electrical Characteristics (Refer to Fig. 2) 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 -- 0.8 1 V Hold-on Voltage VHO IOUT = 1mA, VIN: 2 → 0V 0.7 -- -- V Efficiency -- 80 -- % VOUT ≤ 3.5V (1) -- 24 36 Input Current 1 3.5V < VOUT ≤ 5V (2) To be measured at VIN in continuous switching -- 36 45 µA Input Current 2 (1) (2) To be measured at VOUT in switch off condition -- 6.5 10 µA VOUT ≤ 3.5V (1) -- 18 36 Input Current 3 3.5V < VOUT ≤ 5V (2) To be measured at VIN in no load (guaranteed by I1 and I2) -- 20 45 µA VOUT ≤ 3.5V (1) 120 -- -- LX Switching Current 3.5V < VOUT ≤ 5V (2) ISWITCHING VLX = 0.4V 160 -- -- mA LX Leakage Current ILEAKAGE VLX = 6V -- -- 0.5 µA 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 140 190 240 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) VIN = 1.8V, VSS = 0V, IOUT = 1mA, Topt = 25 °C, and External Circuit of Typical Application (2) VIN = 3V, VSS = 0V, IOUT = 1mA, Topt = 25 °C, and External Circuit of Typical Application |
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