Datasheet LT8603 (Analog Devices) - 7
| Hersteller | Analog Devices |
| Beschreibung | 42V, Low IQ, Quad Output Triple Monolithic Buck Converter and Boost Controller |
| Seiten / Seite | 38 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VIN = PVIN1 = PVIN2 = … |
| Revision | B |
| Dateiformat / Größe | PDF / 3.0 Mb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V
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LT8603
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V and PVIN3 = 3.3V unless otherwise noted. Channel 1 Channel 2 Channel 3 Peak Current Limit vs Duty Cycle Peak Current Limit vs Duty Cycle Peak Current Limit vs. Duty Cycle Peak Current Limit vs Duty Cycle Duty Cycle
3.0 5.0 4.0 2.7 4.5 3.5 2.4 4.0 3.0 2.1 3.5 2.5 TOP FET CURRENT LIMIT (A) 1.8 TOP FET CURRENT LIMIT (A) 3.0 TOP FET CURRENT LIMIT (A) 2.0 1.5 2.5 1.5 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 DUTY CYCLE (%) DUTY CYCLE (%) DUTY CYCLE (%) 8601 G12 8603 G10 8603 G11
Channels 1, 2 Channels 1, 2 Channel 3 Minimum On-Time vs I Minimum On T SW Minimum Off-Time vs I SW Minimum Off-T SW ime vs I Minimum On-Time vs I Minimum On-T SW ime vs I SW
100 100 180 CH 1 CH 2 162 90 90 144 126 80 80 108 ON-TIME (ns) 90 70 70 72 54 MINIMUM MINIMUM OFF-TIME (ns) MINIMUM ON-TIME (ns) 60 60 36 PVIN3 = 2.6V CH 1 PV 18 IN3 = 3.3V CH 2 PVIN3 = 5.5V 50 50 0 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 SWITCH CURRENT (A) SWITCH CURRENT (A) ISW (A) 8603 G13 8603 G14 8603 G15
Channels 1, 2 Channels 1, 2 Channel 3 Minimum On-T Minimum On Time vs Temperature ime vs T Minimum Off-Time vs T Minimum Off T emperature ime vs T Minimum Off-Time vs I Minimum Off-T SW ime vs I
90 100 100 ISW = 1A ISW = 1A 94 80 90 88 82 70 80 76 70 60 70 64 MIN ON-TIME (ns) MIN OFF-TIME (ns) 58 MINIMUM OFF-TIME (ns) 50 60 52 CH 1 CH 1 46 CH 2 CH 2 40 50 40 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 TEMPERATURE (°C) TEMPERATURE (°C) ISW (A) 8603 G16 8603 G17 8603 G18 Rev. B For more information www.analog.com 7 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 System Architecture Boost Controller Buck Regulators General Functions PCB Layout Thermal Considerations Typical Applications Package Description Revision History Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V and PVIN3 = 3.3V unless otherwise noted. Channel 1 Channel 2 Channel 3 Peak Current Limit vs Duty Cycle Peak Current Limit vs Duty Cycle Peak Current Limit vs. Duty Cycle Peak Current Limit vs Duty Cycle Duty Cycle
3.0 5.0 4.0 2.7 4.5 3.5 2.4 4.0 3.0 2.1 3.5 2.5 TOP FET CURRENT LIMIT (A) 1.8 TOP FET CURRENT LIMIT (A) 3.0 TOP FET CURRENT LIMIT (A) 2.0 1.5 2.5 1.5 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 DUTY CYCLE (%) DUTY CYCLE (%) DUTY CYCLE (%) 8601 G12 8603 G10 8603 G11
Channels 1, 2 Channels 1, 2 Channel 3 Minimum On-Time vs I Minimum On T SW Minimum Off-Time vs I SW Minimum Off-T SW ime vs I Minimum On-Time vs I Minimum On-T SW ime vs I SW
100 100 180 CH 1 CH 2 162 90 90 144 126 80 80 108 ON-TIME (ns) 90 70 70 72 54 MINIMUM MINIMUM OFF-TIME (ns) MINIMUM ON-TIME (ns) 60 60 36 PVIN3 = 2.6V CH 1 PV 18 IN3 = 3.3V CH 2 PVIN3 = 5.5V 50 50 0 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 SWITCH CURRENT (A) SWITCH CURRENT (A) ISW (A) 8603 G13 8603 G14 8603 G15
Channels 1, 2 Channels 1, 2 Channel 3 Minimum On-T Minimum On Time vs Temperature ime vs T Minimum Off-Time vs T Minimum Off T emperature ime vs T Minimum Off-Time vs I Minimum Off-T SW ime vs I
90 100 100 ISW = 1A ISW = 1A 94 80 90 88 82 70 80 76 70 60 70 64 MIN ON-TIME (ns) MIN OFF-TIME (ns) 58 MINIMUM OFF-TIME (ns) 50 60 52 CH 1 CH 1 46 CH 2 CH 2 40 50 40 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 TEMPERATURE (°C) TEMPERATURE (°C) ISW (A) 8603 G16 8603 G17 8603 G18 Rev. B For more information www.analog.com 7 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 System Architecture Boost Controller Buck Regulators General Functions PCB Layout Thermal Considerations Typical Applications Package Description Revision History Related Parts