Datasheet LT3501 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Monolithic Dual Tracking 3A Step-Down Switching Regulator |
| Pages / Page | 30 / 5 — Typical perForMance characTerisTics. Soft-Start to Feedback Offset. VC … |
| File Format / Size | PDF / 450 Kb |
| Document Language | English |
Typical perForMance characTerisTics. Soft-Start to Feedback Offset. VC Switching Threshold Voltage
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LT3501
Typical perForMance characTerisTics Soft-Start to Feedback Offset VC Switching Threshold Voltage Power Good Threshold Voltage Voltage vs Temperature vs Temperature vs Temperature
4 1000 800 780 3 900 760 2 800 740 1 V RISING OUT = 5V 720 0 700 700 FALLING VOUT = 0V 680 VOLTAGE (mV) –1 VOLTAGE (V) VOLTAGE (V) 600 660 –2 500 640 –3 620 –4 400 600 –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) 3501 G08 3501 G09 3501 G10
Power Good Sink Current Minimum Switching Times Switching Frequency and Channel vs Temperature vs Temperature Phase vs Temperature
1000 250 300 200 RT/SYNC = 133kΩ 950 230 290 190 900 210 280 180 MINIMUM ON-TIME PHASE 850 190 270 170 PHASE (DEG) 800 170 260 160 750 150 250 150 700 TIME (ns) 130 240 FREQUENCY 140 CURRENT (µA) MINIMUM OFF-TIME 650 110 FREQUENCY (kHz) 230 130 600 90 220 120 550 70 210 110 500 50 200 100 –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) 3501 G11 3501 G12 3501 G13
Switching Frequency and Channel Synchronization Clock Frequency Channel Phase vs Temperature Phase vs Temperature Range vs Temperature with External Synchronization
1650 200 2500 188 RRT/SYNC = 15.4k 195 186 1600 PHASE 190 2000 164 MAXIMUM 182 1550 185 PHASE (DEG) SYNCHRONIZATION SYNCHRONIZATION 180 180 FREQUENCY 1500 FREQUENCY FREQUENCY = 250kHz 1500 175 178 170 1000 PHASE (DEG) 176 FREQUENCY (kHz) 1450 165 FREQUENCY (kHz) 174 MINIMUM 172 1400 160 500 SYNCHRONIZATION SYNCHRONIZATION 155 FREQUENCY 170 FREQUENCY = 1500kHz 1350 150 0 168 –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) 3501 G14 3501 G15 3501 G16 3501fd 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Related Parts
Typical perForMance characTerisTics Soft-Start to Feedback Offset VC Switching Threshold Voltage Power Good Threshold Voltage Voltage vs Temperature vs Temperature vs Temperature
4 1000 800 780 3 900 760 2 800 740 1 V RISING OUT = 5V 720 0 700 700 FALLING VOUT = 0V 680 VOLTAGE (mV) –1 VOLTAGE (V) VOLTAGE (V) 600 660 –2 500 640 –3 620 –4 400 600 –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) 3501 G08 3501 G09 3501 G10
Power Good Sink Current Minimum Switching Times Switching Frequency and Channel vs Temperature vs Temperature Phase vs Temperature
1000 250 300 200 RT/SYNC = 133kΩ 950 230 290 190 900 210 280 180 MINIMUM ON-TIME PHASE 850 190 270 170 PHASE (DEG) 800 170 260 160 750 150 250 150 700 TIME (ns) 130 240 FREQUENCY 140 CURRENT (µA) MINIMUM OFF-TIME 650 110 FREQUENCY (kHz) 230 130 600 90 220 120 550 70 210 110 500 50 200 100 –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) 3501 G11 3501 G12 3501 G13
Switching Frequency and Channel Synchronization Clock Frequency Channel Phase vs Temperature Phase vs Temperature Range vs Temperature with External Synchronization
1650 200 2500 188 RRT/SYNC = 15.4k 195 186 1600 PHASE 190 2000 164 MAXIMUM 182 1550 185 PHASE (DEG) SYNCHRONIZATION SYNCHRONIZATION 180 180 FREQUENCY 1500 FREQUENCY FREQUENCY = 250kHz 1500 175 178 170 1000 PHASE (DEG) 176 FREQUENCY (kHz) 1450 165 FREQUENCY (kHz) 174 MINIMUM 172 1400 160 500 SYNCHRONIZATION SYNCHRONIZATION 155 FREQUENCY 170 FREQUENCY = 1500kHz 1350 150 0 168 –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) 3501 G14 3501 G15 3501 G16 3501fd 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Related Parts
