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LTC4264 Datasheet(PDF) 7 Page - Linear Technology |
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LTC4264 Datasheet(HTML) 7 Page - Linear Technology |
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7 / 28 page  LTC4274 7 4274fa 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 4274 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 4274 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 4274 G03 VDD = 3.3V VEE = –55V PD IS CLASS 1 10ms/DIV VEE –17.6 PORT VOLTAGE 10V/DIV GND 4274 G04 VDD = 3.3V VEE = –55V PD IS CLASS 4 1ST CLASS EVENT 2ND CLASS EVENT 50μs/DIV 40mA 0mA 4274 G05 –20V PORT VOLTAGE 1V/DIV PORT CURRENT 20mA/DIV VDD = 3.3V VEE = –54V CLASSIFICATION CURRENT –20 –18 –16 –14 –12 –10 –8 –6 –4 –2 0 010 20 30 4274 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 4274 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 4274 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 4274 G09 –80 120 VDD = 3.3V VEE = –54V RSENSE = 0.25Ω REG 48h = C0h |
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Similar Description - LTC4264 |
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