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LTC4269-1 Datasheet(PDF) 7 Page - Linear Technology |
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LTC4269-1 Datasheet(HTML) 7 Page - Linear Technology |
7 / 30 page LTC4266A/LTC4266C 7 4266acfc TYPICAL PERFORMANCE CHARACTERISTICS Power-On Sequence in AUTO Pin Mode Powering Up into a 180μF Load 802.3af Classification in AUTO Pin Mode 2-Event Classification in AUTO Pin Mode Classification Transient Response to 40mA Load Step Classification Current Compliance VDD Supply Current vs Voltage VEE Supply Current vs Voltage 802.3at ILIM Threshold vs Temperature 100ms/DIV –70 –60 10 0 –10 –20 –30 –40 –50 4266AC G01 PORT 1 VDD = 3.3V VEE = –54V FORCED CURRENT DETECTION FORCED VOLTAGE DETECTION 802.3af CLASSIFICATION POWER ON GND VEE 5ms/DIV GND 0mA 4266AC G02 VEE VEE GATE VOLTAGE 10V/DIV PORT CURRENT 200 mA/DIV PORT VOLTAGE 20V/DIV FOLDBACK FET ON 425mA CURRENT LIMIT LOAD FULLY CHARGED VDD = 3.3V VEE = –54V 5ms/DIV VEE –18.4 PORT VOLTAGE 10V/DIV GND 4266AC G03 PORT 1 VDD = 3.3V VEE = –55V PD IS CLASS 1 10ms/DIV VEE –17.6 PORT VOLTAGE 10V/DIV GND 4266AC G04 PORT 1 VDD = 3.3V VEE = –55V PD IS CLASS 4 1ST CLASS EVENT 2ND CLASS EVENT 50μs/DIV 40mA 0mA 4266AC G05 –20V PORT VOLTAGE 1V/DIV PORT CURRENT 20mA/DIV VDD = 3.3V VEE = –54V CLASSIFICATION CURRENT (mA) –20 –18 –16 –14 –12 –10 –8 –6 –4 –2 0 010 20 30 4266AC G06 40 50 60 70 VDD = 3.3V VEE = –54V TA = 25°C VDD SUPPLY VOLTAGE (V) 2.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 2.9 3.1 3.3 3.5 4266AC G07 3.7 3.9 4.1 4.3 –40°C 25°C 85°C VEE SUPPLY VOLTAGE (V) –60 2.0 2.1 2.2 2.3 2.4 –55 –50 –45 –40 4266 G08 –35 –30 –25 –20 –40°C 25°C 85°C TEMPERATURE (°C) –40 210 211 213 212 214 215 840 844 852 848 856 860 040 4266AC G09 –80 120 VDD = 3.3V VEE = –54V RSENSE = 0.25Ω REG 48h = C0h |
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