Datasheet LTC3546 (Analog Devices) - 9
| 制造商 | Analog Devices |
| 描述 | Dual Synchronous, 3A/1A or 2A/2A Configurable Step-Down DC/DC Regulator |
| 页数 / 页 | 30 / 9 — TYPICAL PERFORMANCE CHARACTERISTICS. OUT2 Efficiency vs Frequency. OUT1 … |
| 文件格式/大小 | PDF / 624 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. OUT2 Efficiency vs Frequency. OUT1 RDS(ON) vs VIN. OUT2 RDS(ON) vs VIN
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LTC3546
TYPICAL PERFORMANCE CHARACTERISTICS OUT2 Efficiency vs Frequency OUT1 RDS(ON) vs VIN OUT1 RDS(ON) vs VIN
95 0.120 0.24 94 0.115 0.23 93 0.110 0.22 92 0.105 P-CHANNEL IMP 0.21 P-CHANNEL IMP 91 0.100 (Ω) (Ω) 0.20 90 0.095 0.19 89 R DS(ON) 0.090 R DS(ON) EFFICIENCY (%) 0.18 88 0.085 N-CHANNEL IMP SW1D CONNECTED TO SW1 N-CHANNEL IMP 87 0.17 V 0.080 IN = 3.6V V 86 OUT = 2.5V 0.075 SW1D CONNECTED TO SW1 0.16 SW1D CONNECTED TO SW2 ILOAD = 400mA TA = 27°C TA = 27°C 85 0.070 0.15 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 FREQUENCY (MHz) VIN (V) VIN (V) 3546 G29 3546 G30 3546 G31
OUT2 RDS(ON) vs VIN OUT2 RDS(ON) vs VIN Frequency Variation vs VIN
0.080 0.120 6 SW1D CONNECTED TO SW2 FREQ 143k TO GND TA = 27°C 0.115 4 FREQ TO VIN 0.075 0.110 2 0.105 0.070 P-CHANNEL IMP TION (%) 0 0.100 (Ω) (Ω) ARIA 0.065 0.095 –2 R DS(ON) P-CHANNEL IMP R DS(ON) 0.090 –4 0.060 0.085 N-CHANNEL IMP –6 0.080 FREQUENCY V 0.055 N-CHANNEL IMP 0.075 SW1D CONNECTED TO SW1 –8 TA = 27°C 0.050 0.070 –10 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) VIN (V) VIN (V) 3546 G32 3546 G33 3546 G34
Frequency Variation vs OUT1 Minimum Peak Current OUT2 Minimum Peak Current Temperature vs VBMC1 vs VBMC2
2 4.0 6 FREQ 143k TO GND VIN = 3.6V VIN = 3.6V 1 FREQ TO VIN 3.5 5 0 3.0 SW1D TO SW2 SW1D TO SW1 4 TION (%) –1 2.5 ARIA –2 2.0 3 –3 1.5 PEAK CURRENT (A) PEAK CURRENT (A) 2 SW1D TO SW1 –4 1.0 FREQUENCY V SW1D TO SW2 1 –5 0.5 –6 0 0 –50 –25 0 55 50 75 100 125 0.25 0.35 0.45 0.55 0.65 0.75 0.85 0.95 0.25 0.35 0.45 0.55 0.65 0.75 0.85 0.95 TEMPERATURE (°C) VBMC1 (V) VBMC1 (V) 3546 G35 3546 G36 3546 G37 3546fd For more information www.linear.com/3546 9
TYPICAL PERFORMANCE CHARACTERISTICS OUT2 Efficiency vs Frequency OUT1 RDS(ON) vs VIN OUT1 RDS(ON) vs VIN
95 0.120 0.24 94 0.115 0.23 93 0.110 0.22 92 0.105 P-CHANNEL IMP 0.21 P-CHANNEL IMP 91 0.100 (Ω) (Ω) 0.20 90 0.095 0.19 89 R DS(ON) 0.090 R DS(ON) EFFICIENCY (%) 0.18 88 0.085 N-CHANNEL IMP SW1D CONNECTED TO SW1 N-CHANNEL IMP 87 0.17 V 0.080 IN = 3.6V V 86 OUT = 2.5V 0.075 SW1D CONNECTED TO SW1 0.16 SW1D CONNECTED TO SW2 ILOAD = 400mA TA = 27°C TA = 27°C 85 0.070 0.15 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 FREQUENCY (MHz) VIN (V) VIN (V) 3546 G29 3546 G30 3546 G31
OUT2 RDS(ON) vs VIN OUT2 RDS(ON) vs VIN Frequency Variation vs VIN
0.080 0.120 6 SW1D CONNECTED TO SW2 FREQ 143k TO GND TA = 27°C 0.115 4 FREQ TO VIN 0.075 0.110 2 0.105 0.070 P-CHANNEL IMP TION (%) 0 0.100 (Ω) (Ω) ARIA 0.065 0.095 –2 R DS(ON) P-CHANNEL IMP R DS(ON) 0.090 –4 0.060 0.085 N-CHANNEL IMP –6 0.080 FREQUENCY V 0.055 N-CHANNEL IMP 0.075 SW1D CONNECTED TO SW1 –8 TA = 27°C 0.050 0.070 –10 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) VIN (V) VIN (V) 3546 G32 3546 G33 3546 G34
Frequency Variation vs OUT1 Minimum Peak Current OUT2 Minimum Peak Current Temperature vs VBMC1 vs VBMC2
2 4.0 6 FREQ 143k TO GND VIN = 3.6V VIN = 3.6V 1 FREQ TO VIN 3.5 5 0 3.0 SW1D TO SW2 SW1D TO SW1 4 TION (%) –1 2.5 ARIA –2 2.0 3 –3 1.5 PEAK CURRENT (A) PEAK CURRENT (A) 2 SW1D TO SW1 –4 1.0 FREQUENCY V SW1D TO SW2 1 –5 0.5 –6 0 0 –50 –25 0 55 50 75 100 125 0.25 0.35 0.45 0.55 0.65 0.75 0.85 0.95 0.25 0.35 0.45 0.55 0.65 0.75 0.85 0.95 TEMPERATURE (°C) VBMC1 (V) VBMC1 (V) 3546 G35 3546 G36 3546 G37 3546fd For more information www.linear.com/3546 9