Datasheet LTC3374A (Analog Devices) - 9
| Fabricante | Analog Devices |
| Descripción | High Accuracy 8-Channel Parallelable 1A Buck DC/DCs |
| Páginas / Página | 24 / 9 — Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. 1A … |
| Formato / tamaño de archivo | PDF / 1.7 Mb |
| Idioma del documento | Inglés |
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. 1A Buck Regulator Load Regulation
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LTC3374A
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. 1A Buck Regulator Load Regulation 4A Buck Regulator Load Regulation 1A Buck Regulator Line Regulation (Forced Continuous Mode) (Forced Continuous Mode) (Forced Continuous Mode)
1.820 1.820 1.820 fOSC = 2MHz fOSC = 2MHz fOSC = 2MHz 1.815 L = 2.2µH L = 2.2µH 1.815 1.815 L = 2.2µH 1.810 1.810 1.810 1.805 1.805 1.805 (V) (V) (V) 1.800 1.800 1.800 V OUT V OUT V OUT 1.795 1.795 1.795 DROPOUT DROPOUT 1.790 1.790 1.790 V VIN = 2.25V 1.785 IN = 2.25V V 1.785 1.785 IN = 3.3V VIN = 3.3V ILOAD = 1mA VIN = 5.5V VIN = 5.5V ILOAD = 500mA 1.780 1.780 1.780 1m 10m 100m 1 1m 10m 100m 1 4 2 2.5 3 3.5 4 4.5 5 5.5 LOAD CURRENT (A) LOAD CURRENT (A) VIN (V) 3374A G36 3374A G37 3374A G38
1A Buck Regulator No-Load 4A Buck Regulator No-Load 1A Buck Regulator, Transient Start-Up Transient Start-Up Transient Response (Burst Mode Operation)
VOUT 100mV/DIV VOUT VOUT AC-COUPLED 500mV/DIV 500mV/DIV 0V 0V INDUCTOR INDUCTOR CURRENT CURRENT INDUCTOR 250mA/DIV 2A/DIV CURRENT 0mA 0A 250mA/DIV EN EN 0mA 2V/DIV 2V/DIV 0V 0V 3374A G39 3374A G40 3374A G41 400µs/DIV 400µs/DIV 40µs/DIV VIN = 3.3V VIN = 3.3V LOAD STEP: 100mA to 700mA L = 2.2µH L = 0.6µH VIN = 3.3V L = 2.2µH VOUT = 1.8V
1A Buck Regulator, Transient 4A Buck Regulator, Transient Response (Forced Continuous 4A Buck Regulator, Transient Response (Forced Continuous Mode) Response (Burst Mode Operation) Mode)
VOUT VOUT VOUT 100mV/DIV 100mV/DIV 100mV/DIV AC-COUPLED AC-COUPLED AC-COUPLED INDUCTOR INDUCTOR CURRENT INDUCTOR CURRENT 250mA/DIV CURRENT 1A/DIV 0mA 1A/DIV 0A 0A 3374A G42 3374A G43 3374A G44 40µs/DIV 40µs/DIV 40µs/DIV LOAD STEP: 100mA to 700mA LOAD STEP: 400mA to 2.8A LOAD STEP: 400mA to 2.8A VIN = 3.3V L = 2.2µH VIN = 3.3V L = 0.6µH VIN = 3.3V L = 0.6µH VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V 3374af For more information www.linear.com/LTC3374A 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information (http://www.linear.com/product/LTC3374A#orderinfo) Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Buck Switching Regulators Buck Regulators with Combined Power Stages Power Failure Reporting Via PGOOD_ALL Pin Temperature Monitoring and Overtemperature Protection Programming the Operating Frequency Applications Information Buck Switching Regulator Output Voltage and Feedback Network Input and Output Decoupling Capacitor Selection Combined Buck Regulators Buck Regulators PCB Considerations Package Description Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. 1A Buck Regulator Load Regulation 4A Buck Regulator Load Regulation 1A Buck Regulator Line Regulation (Forced Continuous Mode) (Forced Continuous Mode) (Forced Continuous Mode)
1.820 1.820 1.820 fOSC = 2MHz fOSC = 2MHz fOSC = 2MHz 1.815 L = 2.2µH L = 2.2µH 1.815 1.815 L = 2.2µH 1.810 1.810 1.810 1.805 1.805 1.805 (V) (V) (V) 1.800 1.800 1.800 V OUT V OUT V OUT 1.795 1.795 1.795 DROPOUT DROPOUT 1.790 1.790 1.790 V VIN = 2.25V 1.785 IN = 2.25V V 1.785 1.785 IN = 3.3V VIN = 3.3V ILOAD = 1mA VIN = 5.5V VIN = 5.5V ILOAD = 500mA 1.780 1.780 1.780 1m 10m 100m 1 1m 10m 100m 1 4 2 2.5 3 3.5 4 4.5 5 5.5 LOAD CURRENT (A) LOAD CURRENT (A) VIN (V) 3374A G36 3374A G37 3374A G38
1A Buck Regulator No-Load 4A Buck Regulator No-Load 1A Buck Regulator, Transient Start-Up Transient Start-Up Transient Response (Burst Mode Operation)
VOUT 100mV/DIV VOUT VOUT AC-COUPLED 500mV/DIV 500mV/DIV 0V 0V INDUCTOR INDUCTOR CURRENT CURRENT INDUCTOR 250mA/DIV 2A/DIV CURRENT 0mA 0A 250mA/DIV EN EN 0mA 2V/DIV 2V/DIV 0V 0V 3374A G39 3374A G40 3374A G41 400µs/DIV 400µs/DIV 40µs/DIV VIN = 3.3V VIN = 3.3V LOAD STEP: 100mA to 700mA L = 2.2µH L = 0.6µH VIN = 3.3V L = 2.2µH VOUT = 1.8V
1A Buck Regulator, Transient 4A Buck Regulator, Transient Response (Forced Continuous 4A Buck Regulator, Transient Response (Forced Continuous Mode) Response (Burst Mode Operation) Mode)
VOUT VOUT VOUT 100mV/DIV 100mV/DIV 100mV/DIV AC-COUPLED AC-COUPLED AC-COUPLED INDUCTOR INDUCTOR CURRENT INDUCTOR CURRENT 250mA/DIV CURRENT 1A/DIV 0mA 1A/DIV 0A 0A 3374A G42 3374A G43 3374A G44 40µs/DIV 40µs/DIV 40µs/DIV LOAD STEP: 100mA to 700mA LOAD STEP: 400mA to 2.8A LOAD STEP: 400mA to 2.8A VIN = 3.3V L = 2.2µH VIN = 3.3V L = 0.6µH VIN = 3.3V L = 0.6µH VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V 3374af For more information www.linear.com/LTC3374A 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information (http://www.linear.com/product/LTC3374A#orderinfo) Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Buck Switching Regulators Buck Regulators with Combined Power Stages Power Failure Reporting Via PGOOD_ALL Pin Temperature Monitoring and Overtemperature Protection Programming the Operating Frequency Applications Information Buck Switching Regulator Output Voltage and Feedback Network Input and Output Decoupling Capacitor Selection Combined Buck Regulators Buck Regulators PCB Considerations Package Description Typical Application Related Parts