Datasheet LT8471 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | Dual Multitopology DC/DC Converters with 2A Switches and Synchronization |
| Pages / Page | 36 / 6 — Typical perForMance characTerisTics TA = 25°C, unless otherwise … |
| File Format / Size | PDF / 488 Kb |
| Document Language | English |
Typical perForMance characTerisTics TA = 25°C, unless otherwise specified. OV/UV Pin Current. OV/UV Overvoltage Threshold
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Text Version of Document
LT8471
Typical perForMance characTerisTics TA = 25°C, unless otherwise specified. OV/UV Pin Current OV/UV Overvoltage Threshold OV/UV Undervoltage Threshold
5 85 1.30 84 4 83 1.25 82 3 81 TAGE (V) 80 1.20 2 79 /UV VOL /UV PIN CURRENT (µA) 78 OV CURRENT INTO PIN (mA) OV 1.15 1 77 –40°C 27°C 76 125°C 0 75 1.10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 –50 –30 –10 10 30 50 70 90 110 130 150 –50 –30 –10 10 30 50 70 90 110 130 150 OV/UV VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 8471 G10 8471 G11 8471 G12
SHOUT-C2 Regulation Voltage Minimum Switch On-Time/ vs Temperature SHOUT-C2 Voltage vs SS1 Switch Off-Time
5 5 400 REGULATION VOLTAGE 4 4 350 300 TAGE (V) 3 TAGE (V) 3 250 /SWITCH OFF-TIME (ns) -C2 VOL MINIMUM ON-TIME 2 - C2 VOL MINIMUM V 2 IN2-C2 VOLTAGE NEEDED TO OPERATE HIGH SIDE SWITCHES 200 SHOUT SHOUT –55°C MINIMUM OFF-TIME 1 1 25°C 150 125°C 150°C SWITCH ON-TIME 0 0 100 –50 –30 –10 10 30 50 70 90 110 130 150 0 0.5 1 1.5 2 2.5 0 5 10 15 20 25 30 35 40 TEMPERATURE (°C) SS1 VOLTAGE (V) V 8471 G13 IN (V) 8471 G14 8471 G15
PG Threshold vs Temperature Skyhook Diode Forward Voltage (FB Falling)
1.0 95 0.8 94 (V) F 0.6 93 + FB 0.4 92 – FB THRESHOLD (%) SKYHOOK DIODE V 0.2 –55°C 25°C 91 125°C 150°C 0 90 0 100 200 300 400 500 –50 –30 –10 10 30 50 70 90 110 130 150 SKYHOOK DIODE CURRENT (mA) TEMPERATURE (°C) 8471 G16 8471 G17 8471fd 6 For more information www.linear.com/8471 Document Outline Features Applications Description 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 Related Parts
Typical perForMance characTerisTics TA = 25°C, unless otherwise specified. OV/UV Pin Current OV/UV Overvoltage Threshold OV/UV Undervoltage Threshold
5 85 1.30 84 4 83 1.25 82 3 81 TAGE (V) 80 1.20 2 79 /UV VOL /UV PIN CURRENT (µA) 78 OV CURRENT INTO PIN (mA) OV 1.15 1 77 –40°C 27°C 76 125°C 0 75 1.10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 –50 –30 –10 10 30 50 70 90 110 130 150 –50 –30 –10 10 30 50 70 90 110 130 150 OV/UV VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 8471 G10 8471 G11 8471 G12
SHOUT-C2 Regulation Voltage Minimum Switch On-Time/ vs Temperature SHOUT-C2 Voltage vs SS1 Switch Off-Time
5 5 400 REGULATION VOLTAGE 4 4 350 300 TAGE (V) 3 TAGE (V) 3 250 /SWITCH OFF-TIME (ns) -C2 VOL MINIMUM ON-TIME 2 - C2 VOL MINIMUM V 2 IN2-C2 VOLTAGE NEEDED TO OPERATE HIGH SIDE SWITCHES 200 SHOUT SHOUT –55°C MINIMUM OFF-TIME 1 1 25°C 150 125°C 150°C SWITCH ON-TIME 0 0 100 –50 –30 –10 10 30 50 70 90 110 130 150 0 0.5 1 1.5 2 2.5 0 5 10 15 20 25 30 35 40 TEMPERATURE (°C) SS1 VOLTAGE (V) V 8471 G13 IN (V) 8471 G14 8471 G15
PG Threshold vs Temperature Skyhook Diode Forward Voltage (FB Falling)
1.0 95 0.8 94 (V) F 0.6 93 + FB 0.4 92 – FB THRESHOLD (%) SKYHOOK DIODE V 0.2 –55°C 25°C 91 125°C 150°C 0 90 0 100 200 300 400 500 –50 –30 –10 10 30 50 70 90 110 130 150 SKYHOOK DIODE CURRENT (mA) TEMPERATURE (°C) 8471 G16 8471 G17 8471fd 6 For more information www.linear.com/8471 Document Outline Features Applications Description 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 Related Parts
