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MAX8798ETX+ Datasheet(PDF) 8 Page - Maxim Integrated Products |
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MAX8798ETX+ Datasheet(HTML) 8 Page - Maxim Integrated Products |
8 / 30 page Internal-Switch Boost Regulator with Integrated 3-Channel Scan Driver for TFT LCDs 8 _______________________________________________________________________________________ PARAMETER CONDITIONS MIN TYP MAX UNITS Propagation Delay Between OE Rising Edge and CKV/CKVB Edge CPV = 0, STV = 0, CLOAD = 4.7nF, 50 450 ns Output Slew Rate CKV, CKVB Without charge sharing, STV = VDD, CLOAD = 4.7nF, 50 20 V/μs Propagation Delay Between STV and STVP CLOAD = 4.7nF 450 ns STVP Output Slew Rate CLOAD = 4.7nF, 50 20 V/μs Charge-Sharing Discharge Path Resistance CKV to CKVCS and CKVB to CKVBCS 400 DISH Switch Resistance GOFF to -3V, DISH = -3V 500 DISH Turn-On Threshold Dish falling -1.8 V STV, CPV, OE Input Low Voltage 0.8 V STV, CPV, OE Input High Voltage 1.6 V OECON Input Low Voltage 1.5 V OECON Input High Voltage 2.0 V OECON Sink Current OECON = STV = VDD 0.4 mA CONTROL INPUTS Input Low Voltage SHDN 0.6 V SHDN, 1.8V < VIN < 3.0V 1.8 Input High Voltage SHDN, 3.0V < VIN < 5.5V 2.0 V ELECTRICAL CHARACTERISTICS (continued) (VIN = VDD = VSHDN = +3V, circuit of Figure 2, BOOST = 8V, GON = 23V, GOFF = -12V, VPOS = 0V, VNEG = 1.5V, OE = CPV = STV = OECON = 0V, TA = -40°C to +85°C, unless otherwise noted.) (Note 6) Note 1: For 5.5V < VIN < 6.0V, use the MAX8798 for no longer than 1% of IC lifetime. For continuous operation, the input voltage should not exceed 5.5V. Note 2: Inhibits boost switching if VBOOST exceeds the threshold This fault is not latched. Note 3: Step-up regulator switching is not enabled until BOOST is above undervoltage threshold. Note 4: SET external resistor range is verified at DAC full scale. Note 5: Guaranteed by design, not production tested. Note 6: -40°C specs are guaranteed by design, not production tested. tF tCLL tCLH tHDDAT tSUDAT tSUSTP tBF tR SDA SCL VIH VIL tHDSTT Figure 1. Timing Definitions Used in the Electrical Characteristics |
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