Datasheet LT3825 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | Isolated No-Opto Synchronous Flyback Controller with Wide Input Supply Range |
| 页数 / 页 | 32 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS. VCC(0N) and VCC(OFF). VCC Start-Up … |
| 文件格式/大小 | PDF / 390 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. VCC(0N) and VCC(OFF). VCC Start-Up Current. vs Temperature. VCC Current vs Temperature
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LT3825
TYPICAL PERFORMANCE CHARACTERISTICS VCC(0N) and VCC(OFF) VCC Start-Up Current vs Temperature vs Temperature VCC Current vs Temperature
16 300 10 15 VCC(ON) 250 9 DYNAMIC CURRENT CPG = 1nF, CSG = 1nF, fOSC = 100kHz 14 8 200 13 7 (V) 12 (µA) 150 (mA) V CC I VCC 6 I VCC 11 V 100 STATIC PART CURRENT CC(OFF) 5 10 50 9 4 VCC = 14V 8 0 3 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3825 G01 3825 G02 3825 G03
SENSE Fault Voltage Oscillator Frequency SENSE Voltage vs Temperature vs Temperature vs Temperature
110 220 110 FB = 1.1V SENSE = V + C 108 SENSE OSC = 100pF SENSE = V + – 108 SENSE 215 WITH V = 0V – SENSE 106 WITH VSENSE = 0V 106 210 104 104 102 205 102 100 200 (kHz) 100 98 f OSC 195 98 SENSE VOLTAGE (mV) 96 SENSE VOLTAGE (mV) 96 190 94 94 92 185 92 90 180 90 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3825 G04 3825 G05 3825 G06
Feedback Pin Input Bias VFB vs Temperature vs Temperature VFB Reset vs Temperature
1.240 300 1.04 R 1.239 CMP OPEN 1.03 1.238 250 1.02 1.237 200 1.236 1.01 (V) 1.235 150 1.00 V FB RESET (V) 1.234 V FB 0.99 1.233 100 0.98 1.232 FEEDBACK PIN INPUT BIAS (nA) 50 1.231 0.97 1.230 0 0.96 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3825 G07 3825 G08 3825 G09 3525fe 4 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS VCC(0N) and VCC(OFF) VCC Start-Up Current vs Temperature vs Temperature VCC Current vs Temperature
16 300 10 15 VCC(ON) 250 9 DYNAMIC CURRENT CPG = 1nF, CSG = 1nF, fOSC = 100kHz 14 8 200 13 7 (V) 12 (µA) 150 (mA) V CC I VCC 6 I VCC 11 V 100 STATIC PART CURRENT CC(OFF) 5 10 50 9 4 VCC = 14V 8 0 3 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3825 G01 3825 G02 3825 G03
SENSE Fault Voltage Oscillator Frequency SENSE Voltage vs Temperature vs Temperature vs Temperature
110 220 110 FB = 1.1V SENSE = V + C 108 SENSE OSC = 100pF SENSE = V + – 108 SENSE 215 WITH V = 0V – SENSE 106 WITH VSENSE = 0V 106 210 104 104 102 205 102 100 200 (kHz) 100 98 f OSC 195 98 SENSE VOLTAGE (mV) 96 SENSE VOLTAGE (mV) 96 190 94 94 92 185 92 90 180 90 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3825 G04 3825 G05 3825 G06
Feedback Pin Input Bias VFB vs Temperature vs Temperature VFB Reset vs Temperature
1.240 300 1.04 R 1.239 CMP OPEN 1.03 1.238 250 1.02 1.237 200 1.236 1.01 (V) 1.235 150 1.00 V FB RESET (V) 1.234 V FB 0.99 1.233 100 0.98 1.232 FEEDBACK PIN INPUT BIAS (nA) 50 1.231 0.97 1.230 0 0.96 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3825 G07 3825 G08 3825 G09 3525fe 4 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts