Datasheet LT8601 (Analog Devices) - 6
| Fabricante | Analog Devices |
| Descripción | 42V Triple Monolithic Synchronous Step-Down Regulator |
| Páginas / Página | 26 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VIN = PVIN1 = PVIN2 = … |
| Revisión | B |
| Formato / tamaño de archivo | PDF / 2.5 Mb |
| Idioma del documento | Inglés |
TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V
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LT8601
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V and PVIN3 = 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) 8601 G10 8601 G11 8601 G12
Power-On Reset Time vs CPOR Switching Frequency vs RT Full Frequency Waveforms
400 2.25 350 2.00 VSW1 10V/DIV 300 1.75 VSW2 250 1.50 10V/DIV Y TIME (ms) 200 1.25 150 1.00 VSW3 2V/DIV POR DELA FREQUENCY (MHz) 100 0.75 8601 G15 50 0.50 200ns/DIV VOUT1 = 5V 0 0.25 VOUT2 = 3.3V 0 2000 4000 6000 8000 10000 25 50 75 100 125 150 175 200 225 250 275 VOUT3 = 1.8V CPOR (pF) RT (kΩ) 8601 G13 8601 G14
Light Load Waveforms Minimum On-Time vs ISW Minimum Off-Time vs ISW
100 100 VOUT 20mV/DIV 90 90 VSW 80 5V/DIV 80 CHANNEL 2 CHANNEL 1 OFF-TIME (ns) CHANNEL 2 70 70 IL 0.5A/DIV MINIMUM ON-TIME (ns) MINIMUM 60 CHANNEL 1 60 5µs/DIV 8601 G16 CHANNEL 1 12VIN TO 5VOUT AT 10mA 50 50 VSYNC = 0V 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 SWITCH CURRENT (A) SWITCH CURRENT (A) 8601 G17 8601 G18 Rev. B 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration 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 = 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) 8601 G10 8601 G11 8601 G12
Power-On Reset Time vs CPOR Switching Frequency vs RT Full Frequency Waveforms
400 2.25 350 2.00 VSW1 10V/DIV 300 1.75 VSW2 250 1.50 10V/DIV Y TIME (ms) 200 1.25 150 1.00 VSW3 2V/DIV POR DELA FREQUENCY (MHz) 100 0.75 8601 G15 50 0.50 200ns/DIV VOUT1 = 5V 0 0.25 VOUT2 = 3.3V 0 2000 4000 6000 8000 10000 25 50 75 100 125 150 175 200 225 250 275 VOUT3 = 1.8V CPOR (pF) RT (kΩ) 8601 G13 8601 G14
Light Load Waveforms Minimum On-Time vs ISW Minimum Off-Time vs ISW
100 100 VOUT 20mV/DIV 90 90 VSW 80 5V/DIV 80 CHANNEL 2 CHANNEL 1 OFF-TIME (ns) CHANNEL 2 70 70 IL 0.5A/DIV MINIMUM ON-TIME (ns) MINIMUM 60 CHANNEL 1 60 5µs/DIV 8601 G16 CHANNEL 1 12VIN TO 5VOUT AT 10mA 50 50 VSYNC = 0V 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 SWITCH CURRENT (A) SWITCH CURRENT (A) 8601 G17 8601 G18 Rev. B 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts