Datasheet LTC3563 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | 500mA, Synchronous Step-Down DC/DC Converter with Selectable Output Voltage |
| 页数 / 页 | 16 / 4 — TYPICAL PERFOR A CE CHARACTERISTICS TA = 25°C unless otherwise specifi ed. … |
| 文件格式/大小 | PDF / 288 Kb |
| 文件语言 | 英语 |
TYPICAL PERFOR A CE CHARACTERISTICS TA = 25°C unless otherwise specifi ed. Load Step. Regulated Output Voltage
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LTC3563
W U TYPICAL PERFOR A CE CHARACTERISTICS TA = 25°C unless otherwise specifi ed. Load Step Load Step Load Step
V V OUT OUT VOUT 100mV/DIV 100mV/DIV 100mV/DIV AC COUPLED AC COUPLED AC COUPLED IL IL I 500mA/DIV 500mA/DIV L 500mA/DIV ILOAD ILOAD ILOAD 500mA/DIV 500mA/DIV 500mA/DIV VIN = 3.6V 20µs/DIV 3563 G04 VIN = 3.6V 20µs/DIV 3563 G05 VIN = 3.6V 20µs/DIV 3563 G06 VOUT = 1.87V VOUT = 1.87V VOUT = 1.28V ILOAD = 0A TO 500mA ILOAD = 30mA TO 500mA ILOAD = 0mA TO 500mA
Regulated Output Voltage Oscillator Frequency Load Step vs Temperature vs Temperature
1.31 2.5 VSEL = 0V VOUT 1.30 100mV/DIV 2.4 AC COUPLED 1.29 IL 2.3 1.28 500mA/DIV (V) OUTV 1.27 I 2.2 LOAD 500mA/DIV FREQUENCY (MHz) 1.26 2.1 VIN = 3.6V 20µs/DIV 3563 G07 1.25 VOUT = 1.28V ILOAD = 30mA TO 500mA 1.24 2.0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) 3563 G08 3563 G09
Oscillator Frequency vs Supply Voltage Output Voltage vs Supply Voltage Output Voltage vs Load Current
2.7 0.5 2.0 IOUT = 200mA VIN = 3.6V 2.6 0.4 1.5 2.5 0.3 1.0 0.2 2.4 0.1 0.5 2.3 Burst Mode 0 0 OPERATION 2.2 ERROR (%) ERROR (%) –0.1 OUT OUT –0.5 FREQUENCY (MHz) 2.1 V V –0.2 2.0 –1.0 –0.3 1.9 –0.4 VOUT = 1.28V –1.5 VOUT = 1.28V VOUT = 1.87V VOUT = 1.87V 1.8 –0.5 –2.0 2 3 4 5 6 2 2.5 3 3.5 4 4.5 5 5.5 6 1 10 100 1000 SUPPLY VOLTAGE (V) INPUT VOLTAGE (V) LOAD CURRENT (mA) 3563 G10 3563 G11 3563 G12 3563f 4
W U TYPICAL PERFOR A CE CHARACTERISTICS TA = 25°C unless otherwise specifi ed. Load Step Load Step Load Step
V V OUT OUT VOUT 100mV/DIV 100mV/DIV 100mV/DIV AC COUPLED AC COUPLED AC COUPLED IL IL I 500mA/DIV 500mA/DIV L 500mA/DIV ILOAD ILOAD ILOAD 500mA/DIV 500mA/DIV 500mA/DIV VIN = 3.6V 20µs/DIV 3563 G04 VIN = 3.6V 20µs/DIV 3563 G05 VIN = 3.6V 20µs/DIV 3563 G06 VOUT = 1.87V VOUT = 1.87V VOUT = 1.28V ILOAD = 0A TO 500mA ILOAD = 30mA TO 500mA ILOAD = 0mA TO 500mA
Regulated Output Voltage Oscillator Frequency Load Step vs Temperature vs Temperature
1.31 2.5 VSEL = 0V VOUT 1.30 100mV/DIV 2.4 AC COUPLED 1.29 IL 2.3 1.28 500mA/DIV (V) OUTV 1.27 I 2.2 LOAD 500mA/DIV FREQUENCY (MHz) 1.26 2.1 VIN = 3.6V 20µs/DIV 3563 G07 1.25 VOUT = 1.28V ILOAD = 30mA TO 500mA 1.24 2.0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) 3563 G08 3563 G09
Oscillator Frequency vs Supply Voltage Output Voltage vs Supply Voltage Output Voltage vs Load Current
2.7 0.5 2.0 IOUT = 200mA VIN = 3.6V 2.6 0.4 1.5 2.5 0.3 1.0 0.2 2.4 0.1 0.5 2.3 Burst Mode 0 0 OPERATION 2.2 ERROR (%) ERROR (%) –0.1 OUT OUT –0.5 FREQUENCY (MHz) 2.1 V V –0.2 2.0 –1.0 –0.3 1.9 –0.4 VOUT = 1.28V –1.5 VOUT = 1.28V VOUT = 1.87V VOUT = 1.87V 1.8 –0.5 –2.0 2 3 4 5 6 2 2.5 3 3.5 4 4.5 5 5.5 6 1 10 100 1000 SUPPLY VOLTAGE (V) INPUT VOLTAGE (V) LOAD CURRENT (mA) 3563 G10 3563 G11 3563 G12 3563f 4