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RT9261A-37CX Datasheet(PDF) 2 Page - Richtek Technology Corporation |
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RT9261A-37CX Datasheet(HTML) 2 Page - Richtek Technology Corporation |
2 / 14 page RT9261/A Preliminary www.richtek-ic.com.tw DS9261/A-03 January 2002 2 Absolute Maximum Ratings Output Voltage 8V LX Pin Voltage (1) 8V EXT Pin Voltage (2) -0.3 to VOUT +0.3V CE Pin Voltage (3) -0.3 to VOUT +0.3V LX Pin Output Current (1) 250mA EXT Pin Current (2) ±50mA Power Dissipation, PD @ TA = 25 °C SOT-89 0.5W SOT-25 0.25W Package Thermal Resistance SOT-89, θJC 100 °C/W SOT-89, θJA 300 °C/W SOT-25, θJA 250 °C/W Operating Temperature Range -20 to +85 °C Storage Temperature Range 165 °C Lead Temperature (Soldering, 10 sec.) 260 °C Notes: (1) Applicable to RT9261- CX and RT9261- CB (2) Applicable to RT9261A- CX and RT9261A- CB (3) Applicable to RT9261- CB and RT9261A- CB Electrical Characteristics (Refer to Fig. 1) 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 Hold-on Voltage VHO IOUT = 1mA, VIN: 2 → 0V 0.7 -- -- V VOUT ≤ 3.5V (1) -- 15 18 Input Current 1 3.5V < VOUT ≤ 5V (2) To be measured at VIN at no load -- 18 24 µA Input Current 2 To be measured at VOUT in switch off condition -- 5 8 µA VOUT ≤ 3.5V (1) 60 -- -- LX Switching Current 3.5V < VOUT ≤ 5V (2) ISWITCHING VLX = 0.4V 80 -- -- mA LX Leakage Current ILEAKAGE VLX = 6V -- -- 0.5 µA Maximum Oscillator FMAX 80 120 160 KHz Oscillator Duty Cycle DOSC On ( VLX ” L ” ) side 65 75 85 % Efficiency -- 75 -- % VLX Voltage Limit LX switch on 0.65 0.8 1.0 V Notes: (1) VIN = 1.8V, VSS = 0V, IOUT = 10mA, TOPT = 25 °C, and External Circuit of Typical Application (2) VIN = 3V, VSS = 0V, IOUT = 10mA, TOPT = 25 °C, and External Circuit of Typical Application |
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