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UT2306-3.3V Datasheet(PDF) 8 Page - Unisonic Technologies |
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UT2306-3.3V Datasheet(HTML) 8 Page - Unisonic Technologies |
8 / 19 page UTCUT2306/UT2306-3.3V/UT2306-5.0V LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 8 QW-R103-029,A VOUT 2V/DIV Figure 3. Start-Up Response.Input Current Rises Quickly to 1A. VOUT Reaches 5V in Approximately 1ms.Output Drives 20mA Load 1ms/DIV I IN 500mA/DIV V SHDN 10V/DIV + VIN SW LBI SENSE ILIM IBO SHDN GND 100μF 5V 200mA 2 CELLS 22μH * UT2306-5.0 SHUTDOWN 100 μF + MBRS130L C1 1μF + R1 1M *SUMIDA CD54-220 Figure4.2-Cell to 5V/200mA Boost Converter Takes Four External Parts.Components with Dashed Lines Are for Soft Start(Optional) If the full power capability of the UT2306 is not required,peak switch current can be limited by connecting a resistor RLIM from the ILIM pin to ground. With RLIM = 22k, peak switch current is reduced to approximately 500mA. Smaller power components can then be used. The graph in Figure 6 shows switch current vs RLIM resistor value. |
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