Datasheet LTC3417A (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator |
| 页数 / 页 | 22 / 5 — Typical perForMance characTerisTics. OUT2 Efficiency vs VIN. (Pulse … |
| 文件格式/大小 | PDF / 324 Kb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics. OUT2 Efficiency vs VIN. (Pulse Skipping Mode). Load Step OUT1. Load Step OUT2
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LTC3417A
Typical perForMance characTerisTics OUT2 Efficiency vs VIN (Pulse Skipping Mode) Load Step OUT1 Load Step OUT2
100 ILOAD = 250mA 95 VOUT1 VOUT2 100mV/DIV 100mV/DIV 90 ILOAD = 800mA 85 IOUT1 IOUT2 500mA/DIV 500mA/DIV EFFICIENCY (%) 80 75 3417 G11 3417 G12 V V 100µs/DIV V 100µs/DIV OUT = 2.5V IN = 3.6V IN = 3.6V REFER TO FIGURE 4 VOUT = 1.8V VOUT = 2.5V 70 ILOAD = 0.25A to 1.4A ILOAD = 0.25A to 0.8A 2 2.5 3 3.5 4 4.5 5 5.5 REFER TO FIGURE 4 REFER TO FIGURE 4 VIN (V) 3417 G10
Efficiency vs Frequency OUT1 Efficiency vs Frequency OUT2 RDS(ON) vs VIN OUT1
94 90 0.105 TA = 27°C TA = 27°C VIN = 3.6V 92 VOUT = 1.8V 85 0.100 IOUT = 300mA P-CHANNEL SWITCH 90 80 0.095 (Ω) 88 75 R DS(ON) 0.090 EFFICIENCY (%) 86 EFFICIENCY (%) 70 TA = 27°C 0.085 84 65 VIN = 3.6V VOUT = 2.5V N-CHANNEL SWITCH I 82 60 OUT = 100mA 0.080 0 1 2 3 4 5 0 1 2 3 4 2 2.5 3 3.5 4 4.5 5 5.5 FREQUENCY (MHz) FREQUENCY (MHz) VIN (V) 3417 G13 3417 G14 3417 G15
RDS(ON) vs VIN OUT2 Frequency vs VIN Frequency vs Temperature
0.20 6 15 TA = 27°C 4 0.19 10 FREQ = VIN P-CHANNEL SWITCH 2 FREQ = 143k TO GROUND 0.18 5 0 (Ω) 0.17 –2 0 FREQ = 143k TO GROUND R DS(ON) –4 0.16 FREQ = V –5 IN FREQUENCY VARIATION (%) –6 FREQUENCY VARIATION (%) 0.15 –10 N-CHANNEL SWITCH –8 0.14 –10 –15 2 2.5 3 3.5 4 4.5 5 5.5 2 2.5 3 3.5 4 4.5 5 5.5 –50 –25 0 25 50 75 100 125 VIN (V) VIN (V) TEMPERATURE (˚C) 3417 G16 3417 G17 3417 G18 3417afc 5 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 OUT2 Efficiency vs VIN (Pulse Skipping Mode) Load Step OUT1 Load Step OUT2
100 ILOAD = 250mA 95 VOUT1 VOUT2 100mV/DIV 100mV/DIV 90 ILOAD = 800mA 85 IOUT1 IOUT2 500mA/DIV 500mA/DIV EFFICIENCY (%) 80 75 3417 G11 3417 G12 V V 100µs/DIV V 100µs/DIV OUT = 2.5V IN = 3.6V IN = 3.6V REFER TO FIGURE 4 VOUT = 1.8V VOUT = 2.5V 70 ILOAD = 0.25A to 1.4A ILOAD = 0.25A to 0.8A 2 2.5 3 3.5 4 4.5 5 5.5 REFER TO FIGURE 4 REFER TO FIGURE 4 VIN (V) 3417 G10
Efficiency vs Frequency OUT1 Efficiency vs Frequency OUT2 RDS(ON) vs VIN OUT1
94 90 0.105 TA = 27°C TA = 27°C VIN = 3.6V 92 VOUT = 1.8V 85 0.100 IOUT = 300mA P-CHANNEL SWITCH 90 80 0.095 (Ω) 88 75 R DS(ON) 0.090 EFFICIENCY (%) 86 EFFICIENCY (%) 70 TA = 27°C 0.085 84 65 VIN = 3.6V VOUT = 2.5V N-CHANNEL SWITCH I 82 60 OUT = 100mA 0.080 0 1 2 3 4 5 0 1 2 3 4 2 2.5 3 3.5 4 4.5 5 5.5 FREQUENCY (MHz) FREQUENCY (MHz) VIN (V) 3417 G13 3417 G14 3417 G15
RDS(ON) vs VIN OUT2 Frequency vs VIN Frequency vs Temperature
0.20 6 15 TA = 27°C 4 0.19 10 FREQ = VIN P-CHANNEL SWITCH 2 FREQ = 143k TO GROUND 0.18 5 0 (Ω) 0.17 –2 0 FREQ = 143k TO GROUND R DS(ON) –4 0.16 FREQ = V –5 IN FREQUENCY VARIATION (%) –6 FREQUENCY VARIATION (%) 0.15 –10 N-CHANNEL SWITCH –8 0.14 –10 –15 2 2.5 3 3.5 4 4.5 5 5.5 2 2.5 3 3.5 4 4.5 5 5.5 –50 –25 0 25 50 75 100 125 VIN (V) VIN (V) TEMPERATURE (˚C) 3417 G16 3417 G17 3417 G18 3417afc 5 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