Datasheet LTC3610 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 24V, 12A Monolithic Synchronous Step-Down DC/DC Converter |
| Pages / Page | 24 / 4 — Transient Response. (Discontinuous Mode). Start-Up. … |
| File Format / Size | PDF / 402 Kb |
| Document Language | English |
Transient Response. (Discontinuous Mode). Start-Up. Efficiency vs Load Current. Efficiency vs Input Voltage
Model Line for this Datasheet
Text Version of Document
LTC3610 typical perForMance characteristics
Transient Response Transient Response (Discontinuous Mode) Start-Up
VOUT VOUT 100mV/DIV 100mV/DIV RUN/SS 2V/DIV I I L L 5A/DIV 5A/DIV VOUT 1V/DIV I I LOAD LOAD I 5A/DIV 5A/DIV L 5A/DIV 3610 G01 40µs/DIV 3610 G02 3610 G03 40µs/DIV 40ms/DIV LOAD STEP 0A TO 8A ILOAD = 1A TO 7A VIN = 12V VIN = 12V VIN = 12V VOUT = 2.5V VOUT = 2.5V VOUT = 2.5V RLOAD = 0.5Ω FCB = 0V FCB = INTVCC FIGURE 6 CIRCUIT FIGURE 6 CIRCUIT FIGURE 6 CIRCUIT
Efficiency vs Load Current Efficiency vs Input Voltage Frequency vs Input Voltage
100 100 640 FCB = 5V DISCONTINUOUS FIGURE 6 CIRCUIT ILOAD = 10A MODE 90 600 95 560 80 CONTINUOUS ILOAD = 10A MODE 90 520 70 ILOAD = 0A EFFICIENCY (%) EFFICIENCY (%) I FREQUENCY (kHz) 480 LOAD = 1A 85 60 VIN = 12V VOUT = 2.5V 440 EXTVCC = 5V FCB = 0V FIGURE 6 CIRCUIT FIGURE 6 CIRCUIT 50 80 400 0.001 0.01 0.1 1 10 5 10 15 20 25 5 10 15 20 25 LOAD CURRENT (A) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3610 G04 3610 G05 3610 G06
Frequency vs Load Current Load Regulation ITH Voltage vs Load Current
650 0.80 2.5 FIGURE 6 CIRCUIT FIGURE 6 CIRCUIT 600 0.60 550 CONTINUOUS MODE 2.0 500 0.40 450 400 0.20 1.5 350 (%) CONTINUOUS 0 MODE 300 DISCONTINUOUS MODE V OUT Δ VOLTAGE (V) 250 –0.20 1.0 I TH FREQUENCY (kHz) 200 –0.40 DISCONTINUOUS 150 0.5 MODE 100 –0.60 50 0 –0.80 0 0 2 4 6 8 10 12 0 2 4 6 8 10 12 0 3 6 9 12 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 3610 G07 3610 G08 3610 G09 3610ff Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
Transient Response Transient Response (Discontinuous Mode) Start-Up
VOUT VOUT 100mV/DIV 100mV/DIV RUN/SS 2V/DIV I I L L 5A/DIV 5A/DIV VOUT 1V/DIV I I LOAD LOAD I 5A/DIV 5A/DIV L 5A/DIV 3610 G01 40µs/DIV 3610 G02 3610 G03 40µs/DIV 40ms/DIV LOAD STEP 0A TO 8A ILOAD = 1A TO 7A VIN = 12V VIN = 12V VIN = 12V VOUT = 2.5V VOUT = 2.5V VOUT = 2.5V RLOAD = 0.5Ω FCB = 0V FCB = INTVCC FIGURE 6 CIRCUIT FIGURE 6 CIRCUIT FIGURE 6 CIRCUIT
Efficiency vs Load Current Efficiency vs Input Voltage Frequency vs Input Voltage
100 100 640 FCB = 5V DISCONTINUOUS FIGURE 6 CIRCUIT ILOAD = 10A MODE 90 600 95 560 80 CONTINUOUS ILOAD = 10A MODE 90 520 70 ILOAD = 0A EFFICIENCY (%) EFFICIENCY (%) I FREQUENCY (kHz) 480 LOAD = 1A 85 60 VIN = 12V VOUT = 2.5V 440 EXTVCC = 5V FCB = 0V FIGURE 6 CIRCUIT FIGURE 6 CIRCUIT 50 80 400 0.001 0.01 0.1 1 10 5 10 15 20 25 5 10 15 20 25 LOAD CURRENT (A) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3610 G04 3610 G05 3610 G06
Frequency vs Load Current Load Regulation ITH Voltage vs Load Current
650 0.80 2.5 FIGURE 6 CIRCUIT FIGURE 6 CIRCUIT 600 0.60 550 CONTINUOUS MODE 2.0 500 0.40 450 400 0.20 1.5 350 (%) CONTINUOUS 0 MODE 300 DISCONTINUOUS MODE V OUT Δ VOLTAGE (V) 250 –0.20 1.0 I TH FREQUENCY (kHz) 200 –0.40 DISCONTINUOUS 150 0.5 MODE 100 –0.60 50 0 –0.80 0 0 2 4 6 8 10 12 0 2 4 6 8 10 12 0 3 6 9 12 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 3610 G07 3610 G08 3610 G09 3610ff Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
