Datasheet LTC3376 (Analog Devices) - 4
| Fabricante | Analog Devices |
| Descripción | 20V, 4-Channel Buck DC/DC with 8x Configurable 1.5A Power Stages |
| Páginas / Página | 28 / 4 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| Formato / tamaño de archivo | PDF / 1.7 Mb |
| Idioma del documento | Inglés |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the specified operating
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LTC3376
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating temperature range, otherwise specifications are at TA = 25°C (Note 2). VCC = VINA-H = 12V, RT tied to INTVCC, VFB1-4¯ = 0V, unless otherwise stated. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Buck Regulators Combined
Top Switch Current Limit, Duty < 18% 1 Buck with 2 Power Stages Combined (Note 5) 5.25 A 1 Buck with 3 Power Stages Combined (Note 5) 7.88 A 1 Buck with 4 Power Stages Combined (Note 5) 10.5 A 1 Buck with 5 Power Stages Combined (Note 5) 13.1 A 1 Buck with 6 Power Stages Combined (Note 5) 15.8 A 1 Buck with 7 Power Stages Combined (Note 5) 18.4 A 1 Buck with 8 Power Stages Combined (Note 5) 21 A
Temperature Monitor
VTEMP(ROOM) TEMP Voltage at 25°C 220 250 280 mV ∆VTEMP/°C VTEMP Slope 10 mV/°C OT Overtemperature Shutdown (Note 7) Temperature Rising 165 °C Overtemperature Hysteresis 10 °C
Current Monitors
IMON1-4 Voltage at 1.5A Load RIMON = 10k, Duty Cycle = 25% 0.9 1 1.1 V IMON1-4 Voltage at No Load SYNC/MODE = INTVCC 0 V IMON1-4 Slope RIMON = 10k 0.667 V/A
Interface Logic Pins (CFG0-3, SYNC/MODE, PGOOD1-4)
IOH Output High Leakage Current PGOOD1-4 at 5.5V 1 µA VOL Output Low Voltage PGOOD1-4, 3mA into Pin 0.03 0.4 V VIH Input High Threshold CFG0-3, SYNC/MODE l 1.2 V VIL Input Low Threshold CFG0-3, SYNC/MODE l 0.4 V IIH, IIL Input High, Low Leakage Current CFG0-3 Pins at INTVCC & 0V 1 µA SYNC/MODE Pin at 5.5V & 0V 1 µA
Interface Logic Pins (RUN1-4)
RUN Rising Threshold First Regulator Turning On l 350 730 1200 mV One Regulator or More Already in Use l 280 300 320 mV RUN Falling Threshold Last Regulator Turning Off 690 mV RUN Falling Threshold One Regulator or More Kept On l 180 200 220 mV RUN Pin Leakage Current RUN1-4 = 5.5V 1 µA Rev 0 4 For more information www.analog.com 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 Typical Application Related Parts
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating temperature range, otherwise specifications are at TA = 25°C (Note 2). VCC = VINA-H = 12V, RT tied to INTVCC, VFB1-4¯ = 0V, unless otherwise stated. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Buck Regulators Combined
Top Switch Current Limit, Duty < 18% 1 Buck with 2 Power Stages Combined (Note 5) 5.25 A 1 Buck with 3 Power Stages Combined (Note 5) 7.88 A 1 Buck with 4 Power Stages Combined (Note 5) 10.5 A 1 Buck with 5 Power Stages Combined (Note 5) 13.1 A 1 Buck with 6 Power Stages Combined (Note 5) 15.8 A 1 Buck with 7 Power Stages Combined (Note 5) 18.4 A 1 Buck with 8 Power Stages Combined (Note 5) 21 A
Temperature Monitor
VTEMP(ROOM) TEMP Voltage at 25°C 220 250 280 mV ∆VTEMP/°C VTEMP Slope 10 mV/°C OT Overtemperature Shutdown (Note 7) Temperature Rising 165 °C Overtemperature Hysteresis 10 °C
Current Monitors
IMON1-4 Voltage at 1.5A Load RIMON = 10k, Duty Cycle = 25% 0.9 1 1.1 V IMON1-4 Voltage at No Load SYNC/MODE = INTVCC 0 V IMON1-4 Slope RIMON = 10k 0.667 V/A
Interface Logic Pins (CFG0-3, SYNC/MODE, PGOOD1-4)
IOH Output High Leakage Current PGOOD1-4 at 5.5V 1 µA VOL Output Low Voltage PGOOD1-4, 3mA into Pin 0.03 0.4 V VIH Input High Threshold CFG0-3, SYNC/MODE l 1.2 V VIL Input Low Threshold CFG0-3, SYNC/MODE l 0.4 V IIH, IIL Input High, Low Leakage Current CFG0-3 Pins at INTVCC & 0V 1 µA SYNC/MODE Pin at 5.5V & 0V 1 µA
Interface Logic Pins (RUN1-4)
RUN Rising Threshold First Regulator Turning On l 350 730 1200 mV One Regulator or More Already in Use l 280 300 320 mV RUN Falling Threshold Last Regulator Turning Off 690 mV RUN Falling Threshold One Regulator or More Kept On l 180 200 220 mV RUN Pin Leakage Current RUN1-4 = 5.5V 1 µA Rev 0 4 For more information www.analog.com 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 Typical Application Related Parts