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RT9267PC 数据表(PDF) 3 Page - Richtek Technology Corporation |
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RT9267PC 数据表(HTML) 3 Page - Richtek Technology Corporation |
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3 / 9 page  RT9267 Preliminary 3 DS9267-08 March 2007 www.richtek.com Function Block Diagram Absolute Maximum Ratings Supply Voltage ------------------------------------------------------------------------------------------------------ −0.3V to 7V LX Pin Switch Voltage --------------------------------------------------------------------------------------------- −0.3V to (VDD + 0.8V) LDO Output Voltage ----------------------------------------------------------------------------------------------- −0.3V to (VDD + 0.3V) Other I/O Pin Voltages -------------------------------------------------------------------------------------------- −0.3V to (VDD + 0.3V) LX Pin Switch Current --------------------------------------------------------------------------------------------- 2.5A EXT Pin Driver Current --------------------------------------------------------------------------------------------- 30mA LBO Current --------------------------------------------------------------------------------------------------------- 30mA Power Dissipation, PD @ TA = 25 °C TSSOP-16 ------------------------------------------------------------------------------------------------------------ 600mW Operating Junction Temperature -------------------------------------------------------------------------------- 150 °C Storage Temperature Range ------------------------------------------------------------------------------------- −65°C to +150°C 1 st PWM converter 2 nd PWM converter + - + - Loop Control Circuit 0.86V Q2 N MOS 1.25V VDD R2 Q3 N MOS EN2 LBI LBO FB2 Q1 N MOS R1 LX2 GND Shut Down Over Temp. Detector 2nd PWM and Voltage Detector controlled with CE2 + - + - Loop Control Circuit 0.86V Q2 P MOS 1.25V VDD R2 Q3 N MOS EN1 LFB LDO O FB1 Q1 N MOS R1 LX1 Shut Down Over Temp. Detector VDD 1st PWM and LDO controlled with CE1 VDD |
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