Datasheet LTC3561A (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | 1A, 4MHz, Synchronous Step-Down DC/DC Converter |
| 页数 / 页 | 20 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VIN = 3.6V, fO = 1MHz, … |
| 文件格式/大小 | PDF / 364 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VIN = 3.6V, fO = 1MHz, unless otherwise noted. Efficiency vs Frequency
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LTC3561A
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.6V, fO = 1MHz, unless otherwise noted. Efficiency vs Frequency Load Regulation Line Regulation
95 0.4 0.6 VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V I 94 LOAD = 400mA ILOAD = 400mA 0.3 0.4 4.7µH 93 2.2µH 0.2 0.2 92 0.1 0.0 91 ERROR (%) ERROR (%) EFFICIENCY (%) 1µH V OUT 0 V OUT –0.2 90 89 –0.1 –0.4 88 –0.2 –0.6 0 1 2 3 4 5 0 200 400 600 800 1000 1200 1400 2.5 3.0 3.5 4.0 4.5 5.0 5.5 FREQUENCY (MHz) OUTPUT CURRENT(mA) INPUT VOLTAGE(V) 3561A G05 3561A G06 3561A G07
Reference Voltage vs Frequency Variation vs Temperature Temperature Frequency Variation vs VIN
815 6 6 4 810 4 2 805 2 TION (%) TION (%) TAGE (mV) 0 ARIA 800 ARIA 0 –2 795 –2 –4 REFERENCE VOL FREQUENCY V FREQUENCY V 790 –4 –6 785 –6 –8 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 2.5 3.0 3.5 4.0 4.5 5.0 5.5 TEMPERATURE(°C) TEMPERATURE(°C) VIN (V) 3561A G08 3561A G09 3561A G10
Dynamic Supply Current vs RDS(ON) vs Input Voltage RDS(ON) vs Temperature Input Voltage
0.25 0.30 300 VOUT = 1.8V 290 ILOAD = 0A 0.20 0.25 280 MAIN SWITCH 0.20 0.15 270 (Ω) (Ω) MAIN SWITCH 0.15 260 R DS(ON) 0.10 SYNCHRONOUS SWITCH R DS(ON) SYNCHRONOUS SWITCH 250 0.10 240 0.05 0.05 DYNAMIC SUPPLY CURRENT (µA) 230 0.0 0.0 220 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –50 –25 0 25 50 75 100 125 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) TEMPERATURE (°C) VIN (V) 3561A G11 3561A G12 3561A G13 3561afa 4 For more information www.linear.com/LTC3561A
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.6V, fO = 1MHz, unless otherwise noted. Efficiency vs Frequency Load Regulation Line Regulation
95 0.4 0.6 VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V I 94 LOAD = 400mA ILOAD = 400mA 0.3 0.4 4.7µH 93 2.2µH 0.2 0.2 92 0.1 0.0 91 ERROR (%) ERROR (%) EFFICIENCY (%) 1µH V OUT 0 V OUT –0.2 90 89 –0.1 –0.4 88 –0.2 –0.6 0 1 2 3 4 5 0 200 400 600 800 1000 1200 1400 2.5 3.0 3.5 4.0 4.5 5.0 5.5 FREQUENCY (MHz) OUTPUT CURRENT(mA) INPUT VOLTAGE(V) 3561A G05 3561A G06 3561A G07
Reference Voltage vs Frequency Variation vs Temperature Temperature Frequency Variation vs VIN
815 6 6 4 810 4 2 805 2 TION (%) TION (%) TAGE (mV) 0 ARIA 800 ARIA 0 –2 795 –2 –4 REFERENCE VOL FREQUENCY V FREQUENCY V 790 –4 –6 785 –6 –8 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 2.5 3.0 3.5 4.0 4.5 5.0 5.5 TEMPERATURE(°C) TEMPERATURE(°C) VIN (V) 3561A G08 3561A G09 3561A G10
Dynamic Supply Current vs RDS(ON) vs Input Voltage RDS(ON) vs Temperature Input Voltage
0.25 0.30 300 VOUT = 1.8V 290 ILOAD = 0A 0.20 0.25 280 MAIN SWITCH 0.20 0.15 270 (Ω) (Ω) MAIN SWITCH 0.15 260 R DS(ON) 0.10 SYNCHRONOUS SWITCH R DS(ON) SYNCHRONOUS SWITCH 250 0.10 240 0.05 0.05 DYNAMIC SUPPLY CURRENT (µA) 230 0.0 0.0 220 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –50 –25 0 25 50 75 100 125 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) TEMPERATURE (°C) VIN (V) 3561A G11 3561A G12 3561A G13 3561afa 4 For more information www.linear.com/LTC3561A