Datasheet LTC3417A (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator |
| 页数 / 页 | 22 / 4 — Typical perForMance characTerisTics. OUT1 Pulse Skipping. OUT1 Forced … |
| 文件格式/大小 | PDF / 324 Kb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics. OUT1 Pulse Skipping. OUT1 Forced Continuous. OUT1 Burst Mode Operation. Mode Operation
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LTC3417A
Typical perForMance characTerisTics OUT1 Pulse Skipping OUT1 Forced Continuous OUT1 Burst Mode Operation Mode Operation Mode Operation
VOUT VOUT VOUT 20mV/DIV 20mV/DIV 20mV/DIV IL IL IL 250mA/DIV 250mA/DIV 250mA/DIV 3417 G01 VIN = 3.6V 2µs/DIV 3417 G02 VIN = 3.6V 2µs/DIV 3417 G03 VIN = 3.6V 2µs/DIV VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 100mA ILOAD = 100mA ILOAD = 100mA REFER TO FIGURE 4 REFER TO FIGURE 4 REFER TO FIGURE 4
OUT2 Pulse Skipping OUT2 Forced Continuous OUT2 Burst Mode Operation Mode Operation Mode Operation
VOUT VOUT VOUT 20mV/DIV 20mV/DIV 20mV/DIV IL IL IL 250mA/DIV 250mA/DIV 250mA/DIV 3417 G04 VIN = 3.6V 2µs/DIV 3417 G05 VIN = 3.6V 2µs/DIV 3417 G06 VIN = 3.6V 2µs/DIV VOUT = 2.5V VOUT = 2.5V VOUT = 2.5V ILOAD = 60mA ILOAD = 60mA ILOAD = 60mA REFER TO FIGURE 4 REFER TO FIGURE 4 REFER TO FIGURE 4
OUT1 Efficiency vs VIN OUT1 Efficiency vs Load Current OUT2 Efficiency vs Load Current (Burst Mode Operation)
100 100 100 VIN = 2.5V VIN = 3.6V VOUT = 1.8V 95 VOUT = 1.8V 95 VOUT = 2.5V 95 ILOAD = 460mA 90 90 90 85 85 ILOAD = 1.4A 80 80 85 EFFICIENCY (%) 75 75 Burst Mode EFFICIENCY (%) Burst Mode EFFICIENCY (%) 80 70 OPERATION 70 OPERATION PULSE SKIP PULSE SKIP 75 65 FORCED 65 FORCED CONTINUOUS CONTINUOUS REFER TO FIGURE 4 60 REFER TO FIGURE 4 60 REFER TO FIGURE 4 70 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 2 2.5 3 3.5 4 4.5 5 5.5 LOAD CURRENT (A) LOAD CURRENT (A) VIN (V) 3417 G07 3417 G08 3417 G09 3417afc 4 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Package Description Revision History Related Parts
Typical perForMance characTerisTics OUT1 Pulse Skipping OUT1 Forced Continuous OUT1 Burst Mode Operation Mode Operation Mode Operation
VOUT VOUT VOUT 20mV/DIV 20mV/DIV 20mV/DIV IL IL IL 250mA/DIV 250mA/DIV 250mA/DIV 3417 G01 VIN = 3.6V 2µs/DIV 3417 G02 VIN = 3.6V 2µs/DIV 3417 G03 VIN = 3.6V 2µs/DIV VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 100mA ILOAD = 100mA ILOAD = 100mA REFER TO FIGURE 4 REFER TO FIGURE 4 REFER TO FIGURE 4
OUT2 Pulse Skipping OUT2 Forced Continuous OUT2 Burst Mode Operation Mode Operation Mode Operation
VOUT VOUT VOUT 20mV/DIV 20mV/DIV 20mV/DIV IL IL IL 250mA/DIV 250mA/DIV 250mA/DIV 3417 G04 VIN = 3.6V 2µs/DIV 3417 G05 VIN = 3.6V 2µs/DIV 3417 G06 VIN = 3.6V 2µs/DIV VOUT = 2.5V VOUT = 2.5V VOUT = 2.5V ILOAD = 60mA ILOAD = 60mA ILOAD = 60mA REFER TO FIGURE 4 REFER TO FIGURE 4 REFER TO FIGURE 4
OUT1 Efficiency vs VIN OUT1 Efficiency vs Load Current OUT2 Efficiency vs Load Current (Burst Mode Operation)
100 100 100 VIN = 2.5V VIN = 3.6V VOUT = 1.8V 95 VOUT = 1.8V 95 VOUT = 2.5V 95 ILOAD = 460mA 90 90 90 85 85 ILOAD = 1.4A 80 80 85 EFFICIENCY (%) 75 75 Burst Mode EFFICIENCY (%) Burst Mode EFFICIENCY (%) 80 70 OPERATION 70 OPERATION PULSE SKIP PULSE SKIP 75 65 FORCED 65 FORCED CONTINUOUS CONTINUOUS REFER TO FIGURE 4 60 REFER TO FIGURE 4 60 REFER TO FIGURE 4 70 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 2 2.5 3 3.5 4 4.5 5 5.5 LOAD CURRENT (A) LOAD CURRENT (A) VIN (V) 3417 G07 3417 G08 3417 G09 3417afc 4 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Package Description Revision History Related Parts