Datasheet LTC3105 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | 400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up |
| 页数 / 页 | 18 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VAUX = VOUT = 3.3V, VLDO … |
| 文件格式/大小 | PDF / 496 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VAUX = VOUT = 3.3V, VLDO = 2.2V,. VIN = 0.6V, unless otherwise noted
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LTC3105
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VAUX = VOUT = 3.3V, VLDO = 2.2V, VIN = 0.6V, unless otherwise noted. Exiting MPPC Control on IPEAK and IVALLEY Current Limit Input Voltage Step Change vs Temperature Efficiency vs VIN
1.0 100 V V IN VOLTAGE MPPC = 400mV V I OUT = 3V PEAK 200mV/DIV I 0.5 LOAD = 10mA 90 LDO = 2.2V 0 I 80 VALLEY INDUCTOR –0.5 CURRENT 100mA/DIV 70 –1.0 MPPC VOLTAGE EFFICIENCY (%) 60 200mV/DIV –1.5 CHANGE FROM 25°C (%) –2.0 50 –2.5 40 15µs/DIV –45 –30 –15 0 15 30 45 60 75 90 0.25 1.25 2.25 3.25 4.25 5.25 3105 G10 TEMPERATURE (°C) INPUT VOLTAGE (V) 3105 G11 3105 G12
Efficiency vs Output Current and Input and Output Burst Ripple Power Loss, VOUT = 3.3V
90 1000 V V V IN = 0.6V OUT = 3.3V IN = 0.6V EFFICIENCY CIN = 470µF IOUT = 15mA 80 VIN = 0.8V C V OUT = 10µF IN = 1V 70 OUTPUT 100 POWER LOSS (mW) VOLTAGE 60 50mV/DIV 50 SW CURRENT 10 200mA/DIV 40 EFFICIENCY (%) POWER LOSS 30 20 1 INPUT VOLTAGE 10 5mV/DIV 0 0.1 50µs/DIV 0.01 0.1 1 10 100 3105 G13 OUTPUT CURRENT (mA) 3105 G14
Efficiency vs Output Current and No-Load Input Current Power Loss, VOUT = 5V vs Input Voltage
100 1000 800 V V IN = 3V OUT = 3.3V 90 VIN = 2V 700 VIN = 1.5V 80 100 POWER LOSS (mW) 600 EFFICIENCY 70 500 60 10 400 50 300 EFFICIENCY (%) POWER LOSS INPUT CURRENT (µA) 40 1 200 30 100 20 0.1 0 0.01 0.1 1 10 100 0.2 0.4 0.6 0.8 1.0 1.2 OUTPUT CURRENT (mA) INPUT VOLTAGE (V) 3105 G15 3105 G16 3105fb For more information www.linear.com/LTC3105 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VAUX = VOUT = 3.3V, VLDO = 2.2V, VIN = 0.6V, unless otherwise noted. Exiting MPPC Control on IPEAK and IVALLEY Current Limit Input Voltage Step Change vs Temperature Efficiency vs VIN
1.0 100 V V IN VOLTAGE MPPC = 400mV V I OUT = 3V PEAK 200mV/DIV I 0.5 LOAD = 10mA 90 LDO = 2.2V 0 I 80 VALLEY INDUCTOR –0.5 CURRENT 100mA/DIV 70 –1.0 MPPC VOLTAGE EFFICIENCY (%) 60 200mV/DIV –1.5 CHANGE FROM 25°C (%) –2.0 50 –2.5 40 15µs/DIV –45 –30 –15 0 15 30 45 60 75 90 0.25 1.25 2.25 3.25 4.25 5.25 3105 G10 TEMPERATURE (°C) INPUT VOLTAGE (V) 3105 G11 3105 G12
Efficiency vs Output Current and Input and Output Burst Ripple Power Loss, VOUT = 3.3V
90 1000 V V V IN = 0.6V OUT = 3.3V IN = 0.6V EFFICIENCY CIN = 470µF IOUT = 15mA 80 VIN = 0.8V C V OUT = 10µF IN = 1V 70 OUTPUT 100 POWER LOSS (mW) VOLTAGE 60 50mV/DIV 50 SW CURRENT 10 200mA/DIV 40 EFFICIENCY (%) POWER LOSS 30 20 1 INPUT VOLTAGE 10 5mV/DIV 0 0.1 50µs/DIV 0.01 0.1 1 10 100 3105 G13 OUTPUT CURRENT (mA) 3105 G14
Efficiency vs Output Current and No-Load Input Current Power Loss, VOUT = 5V vs Input Voltage
100 1000 800 V V IN = 3V OUT = 3.3V 90 VIN = 2V 700 VIN = 1.5V 80 100 POWER LOSS (mW) 600 EFFICIENCY 70 500 60 10 400 50 300 EFFICIENCY (%) POWER LOSS INPUT CURRENT (µA) 40 1 200 30 100 20 0.1 0 0.01 0.1 1 10 100 0.2 0.4 0.6 0.8 1.0 1.2 OUTPUT CURRENT (mA) INPUT VOLTAGE (V) 3105 G15 3105 G16 3105fb For more information www.linear.com/LTC3105 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Related Parts