Datasheet LT3992 (Analog Devices) - 6
| Hersteller | Analog Devices |
| Beschreibung | Monolithic Dual Tracking 3A Step-Down Switching Regulator |
| Seiten / Seite | 36 / 6 — Typical perForMance characTerisTics. CLKOUT-to-SW1 Delay. … |
| Dateiformat / Größe | PDF / 678 Kb |
| Dokumentensprache | Englisch |
Typical perForMance characTerisTics. CLKOUT-to-SW1 Delay. RT/SYNC-to-CLKOUT and SW1. Switching Phase vs Temperature
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LT3992
Typical perForMance characTerisTics CLKOUT-to-SW1 Delay RT/SYNC-to-CLKOUT and SW1 Switching Phase vs Temperature vs Temperature Delay vs Temperature
195 160 450 193 150 400 SW1 191 140 350 189 130 300 187 120 CLKOUT 250 185 110 200 PHASE (DEG) 183 DELAY (ns) 100 DELAY (ns) 181 90 150 179 80 100 177 70 50 175 60 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3992 G10 3992 G11 3992 G12
Synchronization Duty Cycles DIV Voltage Threshold Switch Saturation Voltage vs Temperature vs Temperature vs Temperature
100 RT/SYNC FREQUENCY = 1MHz 1.8 400 90 1.6 ÷8 80 350 ISW = 3A MAXIMUM RT/SYNC DUTY CYCLE 1.4 70 1.2 300 60 ÷4 1.0 50 250 ISW = 1A 40 0.8 VOLTAGE (V) DUTY CYCLE (%) VOLTAGE (mV) 30 0.6 ÷2 200 MINIMUM RT/SYNC DUTY CYCLE 20 0.4 ISW = 500mA 150 10 0.2 0 0 100 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3992 G13 3992 G14 3992 G15
Switch Peak Current Minimum Boost Voltage Boost Current vs Temperature vs Temperature vs Temperature
100 5.0 3.00 ISW = 3A 90 4.5 VILIM = 1.5V 2.75 80 4.0 2.50 70 3.5 3A 60 3.0 2.25 50 2.5 VILIM = 0.5V 2.00 40 2.0 VOLTAGE (V) 1.75 PEAK CURRENT (A) BOOST CURRENT (mA) 30 1.5 1A 1.50 20 1.0 10 1.25 0.5A 0.5 0 0 1.00 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3992 G16 3992 G17 3992 G18 3992fa 6 For more information www.linear.com/LT3992 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 Typical Application Related Parts
Typical perForMance characTerisTics CLKOUT-to-SW1 Delay RT/SYNC-to-CLKOUT and SW1 Switching Phase vs Temperature vs Temperature Delay vs Temperature
195 160 450 193 150 400 SW1 191 140 350 189 130 300 187 120 CLKOUT 250 185 110 200 PHASE (DEG) 183 DELAY (ns) 100 DELAY (ns) 181 90 150 179 80 100 177 70 50 175 60 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3992 G10 3992 G11 3992 G12
Synchronization Duty Cycles DIV Voltage Threshold Switch Saturation Voltage vs Temperature vs Temperature vs Temperature
100 RT/SYNC FREQUENCY = 1MHz 1.8 400 90 1.6 ÷8 80 350 ISW = 3A MAXIMUM RT/SYNC DUTY CYCLE 1.4 70 1.2 300 60 ÷4 1.0 50 250 ISW = 1A 40 0.8 VOLTAGE (V) DUTY CYCLE (%) VOLTAGE (mV) 30 0.6 ÷2 200 MINIMUM RT/SYNC DUTY CYCLE 20 0.4 ISW = 500mA 150 10 0.2 0 0 100 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3992 G13 3992 G14 3992 G15
Switch Peak Current Minimum Boost Voltage Boost Current vs Temperature vs Temperature vs Temperature
100 5.0 3.00 ISW = 3A 90 4.5 VILIM = 1.5V 2.75 80 4.0 2.50 70 3.5 3A 60 3.0 2.25 50 2.5 VILIM = 0.5V 2.00 40 2.0 VOLTAGE (V) 1.75 PEAK CURRENT (A) BOOST CURRENT (mA) 30 1.5 1A 1.50 20 1.0 10 1.25 0.5A 0.5 0 0 1.00 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3992 G16 3992 G17 3992 G18 3992fa 6 For more information www.linear.com/LT3992 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 Typical Application Related Parts