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RT9244PS Datasheet(PDF) 6 Page - Richtek Technology Corporation |
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RT9244PS Datasheet(HTML) 6 Page - Richtek Technology Corporation |
6 / 15 page RT9244 6 DS9244-06 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 Package Thermal Resistance SOP-32, θJA ----------------------------------------------------------------------------------------------------- 50°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 Recommended Operating Conditions (Note 3) Supply Voltage, VCC ------------------------------------------------------------------------------------------- 5V ± 10% Ambient Temperature Range --------------------------------------------------------------------------------- 0 °C to 70°C Junction Temperature Range --------------------------------------------------------------------------------- 0 °C to 125°C Electrical Characteristics To be continued Parameter Symbol Test Conditions Min Typ Max Units VCC Supply Current Nominal Supply Current ICC PWM 1,2,3,4 Open -- 12 -- 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 -- 2.0 -- V VDVD Threshold Hysteresis VDVDHYS -- 50 -- mV Oscillator Free Running Frequency fOSC RRT = 12kΩ 170 200 230 kHz Frequency Adjustable Range fOSC_ADJ 50 -- 400 kHz Ramp Amplitude ΔVOSC RRT = 12kΩ -- 1.9 -- V Ramp Valley VRV -- 1.0 -- V Maximum On-Time of Each Channel 62 66 75 % RT Pin Voltage VRT R RT = 12kΩ 0.55 0.60 0.65 V Reference and DAC VDAC ≥ 1V −1 -- +1 % DACOUT Voltage Accuracy ΔVDAC VDAC < 1V −10 -- +10 mV DAC (VID0-VID4) Input Low VILDAC -- -- 0.8 V DAC (VID0-VID4) Input High VIHDAC 2.0 -- -- V (VCC = 5V, TA = 25°C, unless otherwise specified) |
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