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MAX8834YEWP+T Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX8834YEWP+T Datasheet(HTML) 4 Page - Maxim Integrated Products |
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4 / 43 page  Adaptive Step-Up Converters with 1.5A Flash Driver 4 _______________________________________________________________________________________ PARAMETER CONDITIONS MIN TYP MAX UNITS Maximum Duty Cycle VOUT = 4.5V 69 75 % Minimum Duty Cycle VOUT = 4.5V 7.5 % COMP Transconductance VCOMP = 1.5V 55 μS COMP Discharge Resistance During shutdown or UVLO, from COMP to AGND 120 OUT Discharge Resistance During shutdown or UVLO, from OUT to LX 10 k FLED1/FLED2 CURRENT REGULATOR IN Supply Current Step-up off, FLED1/FLED2 on, supply current for each current source 0.6 mA Flash 750 Maximum Current Setting Movie 125 mA 23.44mA setting TA = +25°C -5 +20 % TA = +25°C -2.5 ±0.5 +2.5 492.24mA setting TA = -40°C to +85°C -4 +4 % Current Accuracy 750mA setting TA = -40°C to +85°C -10 +5 % 492.24mA setting 110 Current Regulator Dropout (Note 2) 93.75mA setting 50 100 mV TA = +25°C -1 0.01 +1 FLED1/FLED2 Leakage in Shutdown VFLED1 = VFLED2 = 5.5V TA = +85°C 0.1 μA INDLED CURRENT REGULATOR IN Supply Current Step-up converter off, INDLED on 0.6 mA Maximum Current Setting 16 mA 0.5mA setting TA = +25°C -10 +10 % TA = +25°C -3 ±0.5 +3 % Current Accuracy 16mA setting TA = -40°C to +85°C -5 +5 % Current Regulator Dropout 16mA setting (Note 2) 55 130 mV TA = +25°C -1 0.01 +1 INDLED Leakage in Shutdown VINDLED = 5.5V TA = +85°C 0.1 μA PROTECTION CIRCUITS NTC BIAS Current 19.4 20 20.6 μA NTC Overtemperature Detection Threshold VNTC falling, 100mV hysteresis, NTC_CNTL[2:0] = 100 388 400 412 mV NTC Short Detection Threshold VNTC falling 100 mV Flash Duration Timer Range In 50ms steps (Note 3) 50 800 ms TA = +25°C 360 400 440 Flash Duration Timer Accuracy (400ms Setting) TA = -40°C to +85°C 320 480 ms Minimum Flash Duration FLASH_EN[2:0] = 1XX 2 ms Flash Safety Timer Reset Inhibit Period From falling edge of LED_EN until flash safety timer is reset 30 ms Watchdog Timer Range In 4s steps 4 16 s ELECTRICAL CHARACTERISTICS (continued) (VIN = 3.6V, VAGND = VPGND = VFGND = 0V, VDD = 1.8V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) |
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Similar Description - MAX8834YEWP+T |
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