Datasheet LT8613 (Analog Devices) - 5

LT8613
TYPICAL PERFORMANCE CHARACTERISTICS No Load Supply Current Top FET Current Limit vs Duty Cycle Top FET Current Limit
3.8 10 11 3.6 9 10 15% DUTY CYCLE 3.4 9 3.2 8 3.0 8 7 2.8 7 70% DUTY CYCLE 2.6 6 INPUT CURRENT (µA) CURRENT LIMIT (A) 6 2.4 TOP FET CURRENT LIMIT (A) 5 2.2 5 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) 8613 G10 8613 G11 8613 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) 8613 G13 8613 G14 8613 G15
Minimum Load to Full Frequency Switching Frequency Burst Frequency (SYNC Hi)
740 800 60 R V T = 60.4k IN = 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) 8613 G16 8613 G17 8613 G18 Rev. A For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts