Datasheet LT8612 (Analog Devices) - 5
| Hersteller | Analog Devices |
| Beschreibung | 42V, 6A Synchronous Step-Down Regulator with 3μA Quiescent Current |
| Seiten / Seite | 22 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. Top FET Current Limit vs Duty. No … |
| Dateiformat / Größe | PDF / 365 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS. Top FET Current Limit vs Duty. No Load Supply Current. Cycle. Top FET Current Limit
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LT8612
TYPICAL PERFORMANCE CHARACTERISTICS Top FET Current Limit vs Duty No Load Supply Current Cycle Top FET Current Limit
3.8 10 11 3.6 15% DUTY CYCLE 9 10 3.4 9 3.2 8 8 3.0 7 2.8 7 70% DUTY CYCLE 2.6 6 CURRENT LIMIT (A) INPUT CURRENT (µA) 6 2.4 TOP FET CURRENT LIMIT (A) 5 5 2.2 VOUT = 5V 2.0 4 4 0 10 20 30 40 50 0 20 40 60 80 100 –50 –25 0 25 50 75 100 125 150 INPUT VOLTAGE (V) DUTY CYCLE (%) TEMPERATURE (°C) 8612 G10 8612 G11 8612 G12
Minimum On-Time Minimum Off-Time Dropout Voltage
45 100 0.6 95 40 0.5 90 35 0.4 85 VSYNC = 0V 30 80 0.3 VSYNC = 3.3V 75 25 0.2 MINIMUM ON-TIME (ns) MINIMUM OFF-TIME (ns) 70 DROPOUT VOLTAGE (V) 20 0.1 65 15 60 0 0 1 2 3 4 5 6 –50 –25 0 25 50 75 100 125 150 0 1 2 3 4 5 6 LOAD CURRENT (A) TEMPERATURE (°C) LOAD CURRENT (A) 8612 G13 8612 G14 8612 G15
Minimum Load to Full Frequency Switching Frequency Burst Frequency (SYNC Hi)
740 800 60 RT = 60.4k VIN = 12V 730 700 VOUT = 5V L = 3.9µH 50 720 600 40 710 500 700 400 30 690 300 20 MINIMUM LOAD (mA) 680 SWITCH FREQUENCY (kHz) 200 SWITCHING FREQUENCY (kHz) 10 670 100 660 0 0 –50 –25 0 25 50 75 100 125 150 0 100 200 300 400 500 0 10 20 30 40 50 TEMPERATURE (°C) LOAD CURRENT (mA) INPUT VOLTAGE (V) 8612 G16 8612 G17 8612 G18 8612fa For more information www.linear.com/LT8612 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Top FET Current Limit vs Duty No Load Supply Current Cycle Top FET Current Limit
3.8 10 11 3.6 15% DUTY CYCLE 9 10 3.4 9 3.2 8 8 3.0 7 2.8 7 70% DUTY CYCLE 2.6 6 CURRENT LIMIT (A) INPUT CURRENT (µA) 6 2.4 TOP FET CURRENT LIMIT (A) 5 5 2.2 VOUT = 5V 2.0 4 4 0 10 20 30 40 50 0 20 40 60 80 100 –50 –25 0 25 50 75 100 125 150 INPUT VOLTAGE (V) DUTY CYCLE (%) TEMPERATURE (°C) 8612 G10 8612 G11 8612 G12
Minimum On-Time Minimum Off-Time Dropout Voltage
45 100 0.6 95 40 0.5 90 35 0.4 85 VSYNC = 0V 30 80 0.3 VSYNC = 3.3V 75 25 0.2 MINIMUM ON-TIME (ns) MINIMUM OFF-TIME (ns) 70 DROPOUT VOLTAGE (V) 20 0.1 65 15 60 0 0 1 2 3 4 5 6 –50 –25 0 25 50 75 100 125 150 0 1 2 3 4 5 6 LOAD CURRENT (A) TEMPERATURE (°C) LOAD CURRENT (A) 8612 G13 8612 G14 8612 G15
Minimum Load to Full Frequency Switching Frequency Burst Frequency (SYNC Hi)
740 800 60 RT = 60.4k VIN = 12V 730 700 VOUT = 5V L = 3.9µH 50 720 600 40 710 500 700 400 30 690 300 20 MINIMUM LOAD (mA) 680 SWITCH FREQUENCY (kHz) 200 SWITCHING FREQUENCY (kHz) 10 670 100 660 0 0 –50 –25 0 25 50 75 100 125 150 0 100 200 300 400 500 0 10 20 30 40 50 TEMPERATURE (°C) LOAD CURRENT (mA) INPUT VOLTAGE (V) 8612 G16 8612 G17 8612 G18 8612fa For more information www.linear.com/LT8612 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts