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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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RT9245CPC bảng dữ liệu(PDF) 9 Page - Richtek Technology Corporation |
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RT9245CPC bảng dữ liệu(HTML) 9 Page - Richtek Technology Corporation |
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9 / 25 page  RT9245C 9 DS9245C-02 March 2007 www.richtek.com Absolute Maximum Ratings (Note 1) Supply Voltage, VCC ------------------------------------------------------------------------------------------- 7V Input, Output or I/O Voltage ---------------------------------------------------------------------------------- GND − 0.3V to VCC+ 0.3V Power Dissipation, PD @ TA = 25 °C TSSOP-28-------------------------------------------------------------------------------------------------------- 1W Package Thermal Resistance (Note 4) TSSOP-28, θJA -------------------------------------------------------------------------------------------------- 100°C/W Junction Temperature ------------------------------------------------------------------------------------------ 150 °C Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------- 260 °C Storage Temperature Range --------------------------------------------------------------------------------- −65°C to 150°C ESD Susceptibility (Note 2) HBM (Human Body Mode) ----------------------------------------------------------------------------------- 2kV MM (Machine Mode) ------------------------------------------------------------------------------------------- 200V Electrical Characteristics (VCC = 5V, TA = 25 °C, unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Units VCC Supply Current Nominal Supply Current ICC PWM 1,2,3,4 Open -- 12 16 mA Power-On Reset POR Threshold VCCRTH VCC Rising 4.0 4.2 4.5 V Hysteresis VCCHYS 0.2 0.5 -- V Trip (Low to High) VDVDTP Enable 0.94 1.0 1.06 V VDVD Threshold Hysteresis VDVDHYS -- 50 -- mV Oscillator Free Running Frequency fOSC RRT = 20kΩ 170 200 230 kHz Frequency Adjustable Range fOSC_ADJ 50 -- 400 kHz Ramp Amplitude ΔVOSC RRT = 20kΩ -- 1.9 -- V Ramp Valley VRV 0.7 1.0 -- V Maximum Duty of Each Channel 58 64 70 % RT Pin Voltage VRT RRT = 20kΩ 0.9 1.0 1.1 V Reference and DAC VDAC ≥ 1V −0.5 -- +0.5 % DACOUT Voltage Accuracy ΔVDAC VDAC < 1V −5 -- +5 mV To be continued Recommended Operating Conditions (Note 3) Supply Voltage, VCC ------------------------------------------------------------------------------------------- 5V ± 10% Junction Temperature Range --------------------------------------------------------------------------------- −40°C to 125°C Ambient Temperature Range --------------------------------------------------------------------------------- −40°C to 85°C |
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