Datasheet LT3383 (Analog Devices) - 8
| 制造商 | Analog Devices |
| 描述 | Multioutput Power Management Solution with 4 Buck Switching and 3 LDO Linear Regulators |
| 页数 / 页 | 18 / 8 — TYPICAL PERFORMANCE CHARACTERISTICS VIN = 3.8V, TA = 25°C unless … |
| 文件格式/大小 | PDF / 1.2 Mb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS VIN = 3.8V, TA = 25°C unless otherwise noted. Step-Down Switching Regulator
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LT3383
TYPICAL PERFORMANCE CHARACTERISTICS VIN = 3.8V, TA = 25°C unless otherwise noted Step-Down Switching Regulator Buck Minimum Duty Cycle vs Load Step Temperature
20 19 V = 3.8V 18 IN V = 5.0V V IN OUT = 1.2V 100mV/DIV 17 I 16 LOAD = 0.5A TO 1.5A 15 500mA/DIV Y CYCLE (%) 14 DUT 13 12 COUT = 47µF 10µs/DIV 3383 G13 11 10–50 0 50 100 150 TEMPERATURE (°C) 3383 G14
LDO1 to LDO3 Dropout Voltage Buck Minimum Duty Cycle vs VIN vs Temperature
25 450 ILDO = 200mA 24 400 VLDO = 1.2V 23 350 22 300 21 250 VLDO = 1.8V 20 Y CYCLE (%) 200 19 VLDO = 3.3V DUT 150 18 DROPOUT VOLTAGE (mV) 17 100 16 50 15 0 2.5 3 3.5 4 4.5 5 5.5 –50 0 50 100 150 VIN (V) TEMPERATURE (°C) 3383 G15 3383 G16
LDO1 to LDO3 Short-Circuit Current vs Temperature LDO1 to LDO3 Load Step Response
800 750 VLDO = 1.8V 700 50mV/DIV 650 600 ILOAD = 220mA 550 100mA/DIV 500 10mA 450 400 CLDO = 1µF 10µs/DIV 3383 G18 LDO SHORT-CIRCUIT CURRENT (mA) 350 300–50 0 50 100 150 TEMPERATURE (°C) 3383 G17 Rev. 0 8 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Introduction Step-Down Switching Regulators Power On Sequencing Fault Detection and Reporting Applications Information Thermal Considerations and Board Layout Typical Applications Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS VIN = 3.8V, TA = 25°C unless otherwise noted Step-Down Switching Regulator Buck Minimum Duty Cycle vs Load Step Temperature
20 19 V = 3.8V 18 IN V = 5.0V V IN OUT = 1.2V 100mV/DIV 17 I 16 LOAD = 0.5A TO 1.5A 15 500mA/DIV Y CYCLE (%) 14 DUT 13 12 COUT = 47µF 10µs/DIV 3383 G13 11 10–50 0 50 100 150 TEMPERATURE (°C) 3383 G14
LDO1 to LDO3 Dropout Voltage Buck Minimum Duty Cycle vs VIN vs Temperature
25 450 ILDO = 200mA 24 400 VLDO = 1.2V 23 350 22 300 21 250 VLDO = 1.8V 20 Y CYCLE (%) 200 19 VLDO = 3.3V DUT 150 18 DROPOUT VOLTAGE (mV) 17 100 16 50 15 0 2.5 3 3.5 4 4.5 5 5.5 –50 0 50 100 150 VIN (V) TEMPERATURE (°C) 3383 G15 3383 G16
LDO1 to LDO3 Short-Circuit Current vs Temperature LDO1 to LDO3 Load Step Response
800 750 VLDO = 1.8V 700 50mV/DIV 650 600 ILOAD = 220mA 550 100mA/DIV 500 10mA 450 400 CLDO = 1µF 10µs/DIV 3383 G18 LDO SHORT-CIRCUIT CURRENT (mA) 350 300–50 0 50 100 150 TEMPERATURE (°C) 3383 G17 Rev. 0 8 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Introduction Step-Down Switching Regulators Power On Sequencing Fault Detection and Reporting Applications Information Thermal Considerations and Board Layout Typical Applications Package Description Typical Application Related Parts