Datasheet LTC3104 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | 2.6μA Quiescent Current, 15V, 300mA Synchronous Step-Down DC/DC Converter and 10mA LDO |
| 页数 / 页 | 22 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. … |
| 文件格式/大小 | PDF / 486 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Minimum Input Voltage at. Maximum Duty Cycle vs Load
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LTC3104
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted Minimum Input Voltage at Maximum Duty Cycle vs Load Load Regulation Load Regulation Current (Automatic Burst Mode Operation) (Automatic Burst Mode Operation)
15 1.0 1.0 V NORMALIZED AT ILOAD = 100mA NORMALIZED AT ILOAD = 100mA 14 OUT = 12V VIN = 10V VIN = 10V 0.5 V 0.5 V 13 OUT = 5V OUT = 3.3V CFF = 12pF CFF = 12pF 12 (%) 0 (%) 0 11 VOUT = 9V OUT OUT 10 –0.5 –0.5 9 –1.0 INPUT VOLTAGE (V) 8 –1.0 CHANGE IN V CHANGE IN V 7 COUT = 68µF COUT = 68µF V –1.5 –1.5 6 OUT = 5V COUT = 47µF COUT = 47µF COUT = 22µF COUT = 33µF 5 –2.0 –2.0 0 50 100 150 200 250 300 0 10 20 30 40 50 0 10 20 30 40 50 60 70 80 LOAD CURRENT (mA) ILOAD (mA) ILOAD (mA) 3104 G22 3104 G23 3104 G24
Load Regulation Maximum Duty Cycle Automatic Burst Mode Threshold (Automatic Burst Mode Operation) vs Input Voltage vs Supply Voltage
1.0 100 160 NORMALIZED AT ILOAD = 100mA VOUT = 1.2V 0.5 VIN = 10V 140 VOUT = 1.8V V 95 OUT = 1.8V IOUT = 1mA VOUT = 2.5V 0 CFF = 12pF , mA) 120 VOUT = 3.3V 90 V (%) OUT = 5V –0.5 IOUT = 300mA LOAD 100 OUT 85 –1.0 80 80 –1.5 60 CHANGE IN V 75 –2.0 40 C MAXIMUM DUTY CYCLE (%) OUT = 100µF BURST THRESHOLD (I –2.5 C 70 OUT = 68µF 20 COUT = 47µF –3.0 65 0 0 20 40 60 80 100 2 3 4 5 6 7 8 9 0 2 4 6 8 10 12 14 16 ILOAD (mA) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3104 G25 3104 G26 3104 G27
LDO Feedback Voltage LDO Output Voltage LDO Output Voltage vs Temperature vs VIN(LDO) Supply Voltage vs Load Current
1.50 0.10 0.06 NORMALIZED TO 25°C NORMALIZED TO V NORMALIZED TO I 1.25 IN = 3.3V LDO = 5mA 0.08 NOMINAL VLDO = 1.8V 0.05 NOMINAL VLDO = 1.8V 1.00 ILDO = 5mA VIN = VINLDO = 10V VIN = VINLDO 0.04 0.75 0.06 (%) 0.03 FB 0.50 0.04 0.25 0.02 0 0.02 0.01 CHANGE IN V –0.25 0 0 –0.50 –0.02 CHANGE IN OUTPUT VOLTAGE (%) –0.75 CHANGE IN LDO OUTPUT VOLTAGE (%) –0.01 –1.00 –0.04 –0.02 –60 –40 –20 0 20 40 60 80 100 120 140 2 4 6 8 10 12 14 16 0 2 4 6 8 10 TEMPERATURE (°C) INPUT VOLTAGE (V) LDO LOAD CURRENT (mA) 3104 G28 3104 G29 3104 G30 3104fa For more information www.linear.com/LTC3104 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted Minimum Input Voltage at Maximum Duty Cycle vs Load Load Regulation Load Regulation Current (Automatic Burst Mode Operation) (Automatic Burst Mode Operation)
15 1.0 1.0 V NORMALIZED AT ILOAD = 100mA NORMALIZED AT ILOAD = 100mA 14 OUT = 12V VIN = 10V VIN = 10V 0.5 V 0.5 V 13 OUT = 5V OUT = 3.3V CFF = 12pF CFF = 12pF 12 (%) 0 (%) 0 11 VOUT = 9V OUT OUT 10 –0.5 –0.5 9 –1.0 INPUT VOLTAGE (V) 8 –1.0 CHANGE IN V CHANGE IN V 7 COUT = 68µF COUT = 68µF V –1.5 –1.5 6 OUT = 5V COUT = 47µF COUT = 47µF COUT = 22µF COUT = 33µF 5 –2.0 –2.0 0 50 100 150 200 250 300 0 10 20 30 40 50 0 10 20 30 40 50 60 70 80 LOAD CURRENT (mA) ILOAD (mA) ILOAD (mA) 3104 G22 3104 G23 3104 G24
Load Regulation Maximum Duty Cycle Automatic Burst Mode Threshold (Automatic Burst Mode Operation) vs Input Voltage vs Supply Voltage
1.0 100 160 NORMALIZED AT ILOAD = 100mA VOUT = 1.2V 0.5 VIN = 10V 140 VOUT = 1.8V V 95 OUT = 1.8V IOUT = 1mA VOUT = 2.5V 0 CFF = 12pF , mA) 120 VOUT = 3.3V 90 V (%) OUT = 5V –0.5 IOUT = 300mA LOAD 100 OUT 85 –1.0 80 80 –1.5 60 CHANGE IN V 75 –2.0 40 C MAXIMUM DUTY CYCLE (%) OUT = 100µF BURST THRESHOLD (I –2.5 C 70 OUT = 68µF 20 COUT = 47µF –3.0 65 0 0 20 40 60 80 100 2 3 4 5 6 7 8 9 0 2 4 6 8 10 12 14 16 ILOAD (mA) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3104 G25 3104 G26 3104 G27
LDO Feedback Voltage LDO Output Voltage LDO Output Voltage vs Temperature vs VIN(LDO) Supply Voltage vs Load Current
1.50 0.10 0.06 NORMALIZED TO 25°C NORMALIZED TO V NORMALIZED TO I 1.25 IN = 3.3V LDO = 5mA 0.08 NOMINAL VLDO = 1.8V 0.05 NOMINAL VLDO = 1.8V 1.00 ILDO = 5mA VIN = VINLDO = 10V VIN = VINLDO 0.04 0.75 0.06 (%) 0.03 FB 0.50 0.04 0.25 0.02 0 0.02 0.01 CHANGE IN V –0.25 0 0 –0.50 –0.02 CHANGE IN OUTPUT VOLTAGE (%) –0.75 CHANGE IN LDO OUTPUT VOLTAGE (%) –0.01 –1.00 –0.04 –0.02 –60 –40 –20 0 20 40 60 80 100 120 140 2 4 6 8 10 12 14 16 0 2 4 6 8 10 TEMPERATURE (°C) INPUT VOLTAGE (V) LDO LOAD CURRENT (mA) 3104 G28 3104 G29 3104 G30 3104fa For more information www.linear.com/LTC3104 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts