Datasheet LT8602 (Analog Devices) - 7
| Hersteller | Analog Devices |
| Beschreibung | 42V Quad Monolithic Synchronous Step-Down Regulator |
| Seiten / Seite | 30 / 7 — Typical perForMance characTerisTics. TA = 25°C, VIN = PVIN1 = PVIN2 = … |
| Dateiformat / Größe | PDF / 1.9 Mb |
| Dokumentensprache | Englisch |
Typical perForMance characTerisTics. TA = 25°C, VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V
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LT8602
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LT8602
Typical perForMance characTerisTics TA = 25°C, VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V and PVIN3 = PVIN4 = 3.3V, unless otherwise noted. Switching Frequency vs Temperature TRKSS Pull-Up Current vs Voltage RST Pull-Up Current vs Voltage
10 1 10 RT = 30k 8 RT = 60k 6 RT = 250k 0 0 4 2 0 –1 –10 –2 CURRENT (µA) –4 RST TRKSS CURRENT (µA) FREQUENCY CHANGE (%) –2 –20 –6 –8 10 –3 –30 –50 –30 –10 10 30 50 70 90 110 130 150 0 0.5 1 1.5 2 2.5 3 3.5 0 0.5 1 1.5 2 2.5 3 3.5 TEMPERATURE (°C) TRKSS VOLTAGE (V) RST VOLTAGE (V) 8602 G10 8602 G11 8602 G12
Power-On Reset Time vs CPOR Switching Frequency vs RT Quiescent Current vs VIN
400 2.25 50 350 2.00 300 1.75 40 250 1.50 Y TIME (ms) 200 1.25 (µA) 30 I Q 150 1.00 POR DELA FREQUENCY (MHz) 100 0.75 20 50 0.50 0 0.25 10 0 2000 4000 6000 8000 10000 25 50 75 100 125 150 175 200 225 250 275 5 10 15 20 25 30 35 40 45 CPOR (pF) RT (kΩ) VIN (V) 8602 G13 8602 G14 8602 G15
Minimum On-Time vs Minimum On-Time vs ISW Minimum Off-Time vs ISW Temperature
100 100 90 ISW = 1A 90 90 80 CHANNEL 2 80 80 70 CHANNEL 2 CHANNEL 1 CHANNEL 2 70 70 60 CHANNEL 1 MINIMUM ON-TIME (ns) MINIMUM OFF-TIME (ns) MINIMUM ON-TIME (ns) 60 CHANNEL 1 60 50 50 50 40 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 –50 –25 0 25 50 75 100 125 150 SWITCH CURRENT (A) SWITCH CURRENT (A) TEMPERATURE (°C) 8602 G16 8602 G17 8602 G18 8602fb For more information www.linear.com/LT8602 7 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 Revision History Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C, VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V and PVIN3 = PVIN4 = 3.3V, unless otherwise noted. Switching Frequency vs Temperature TRKSS Pull-Up Current vs Voltage RST Pull-Up Current vs Voltage
10 1 10 RT = 30k 8 RT = 60k 6 RT = 250k 0 0 4 2 0 –1 –10 –2 CURRENT (µA) –4 RST TRKSS CURRENT (µA) FREQUENCY CHANGE (%) –2 –20 –6 –8 10 –3 –30 –50 –30 –10 10 30 50 70 90 110 130 150 0 0.5 1 1.5 2 2.5 3 3.5 0 0.5 1 1.5 2 2.5 3 3.5 TEMPERATURE (°C) TRKSS VOLTAGE (V) RST VOLTAGE (V) 8602 G10 8602 G11 8602 G12
Power-On Reset Time vs CPOR Switching Frequency vs RT Quiescent Current vs VIN
400 2.25 50 350 2.00 300 1.75 40 250 1.50 Y TIME (ms) 200 1.25 (µA) 30 I Q 150 1.00 POR DELA FREQUENCY (MHz) 100 0.75 20 50 0.50 0 0.25 10 0 2000 4000 6000 8000 10000 25 50 75 100 125 150 175 200 225 250 275 5 10 15 20 25 30 35 40 45 CPOR (pF) RT (kΩ) VIN (V) 8602 G13 8602 G14 8602 G15
Minimum On-Time vs Minimum On-Time vs ISW Minimum Off-Time vs ISW Temperature
100 100 90 ISW = 1A 90 90 80 CHANNEL 2 80 80 70 CHANNEL 2 CHANNEL 1 CHANNEL 2 70 70 60 CHANNEL 1 MINIMUM ON-TIME (ns) MINIMUM OFF-TIME (ns) MINIMUM ON-TIME (ns) 60 CHANNEL 1 60 50 50 50 40 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 –50 –25 0 25 50 75 100 125 150 SWITCH CURRENT (A) SWITCH CURRENT (A) TEMPERATURE (°C) 8602 G16 8602 G17 8602 G18 8602fb For more information www.linear.com/LT8602 7 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 Revision History Typical Application Related Parts