Datasheet LTC3400, LTC3400B (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 600mA, 1.2MHz Micropower Synchronous Boost Converters in ThinSOT |
| 页数 / 页 | 12 / 3 — TYPICAL PERFOR A CE CHARACTERISTICS. Output Load Burst Mode Threshold. … |
| 文件格式/大小 | PDF / 223 Kb |
| 文件语言 | 英语 |
TYPICAL PERFOR A CE CHARACTERISTICS. Output Load Burst Mode Threshold. Minimum Start-Up Voltage. vs VIN. VOUT vs Temperature
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LTC3400/LTC3400B
W U TYPICAL PERFOR A CE CHARACTERISTICS Output Load Burst Mode Threshold Minimum Start-Up Voltage vs VIN VOUT vs Temperature vs Load Current
3.36 1.4 L = 4.7µH FIGURE 1 CIRCUIT TA = 25°C TA = 25°C IO = 10mA 3.34 1.3 20 VOUT = 3.3V VOUT = 5V 3.32 1.2 (V) 3.30 1.1 OUTV 10 3.28 1.0 OUTPUT CURRENT (mA) START-UP VOLTAGE (V) 3.26 0.9 0 3.24 0.8 0.9 1.5 2.1 2.7 3.3 3.9 4.5 –60 –30 0 30 60 90 120 0.1 1 10 100 VIN (V) TEMPERATURE (°C) IOUT (mA) CURRENT SOURCE LOAD 3400 G01 3400 G02 3400 G03
Normalized Oscillator Frequency No Load Battery Current vs VBATT vs Temperature SW Pin Antiringing Operation
1000 1.01 VOUT = 3.3V TA = 25°C 1.00 µA) 0.99 VSW 1V/DIV 100 0.98 0.97 0V BATTERY CURRENT ( NORMALIZED FREQUENCY 0.96 VIN = 1.3V 100ns/DIV 3400 G06 VOUT = 3.3V 10 0.95 IOUT = 10mA 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 –50 –30 –10 10 30 50 70 90 L = 6.8µH BATTERY VOLTAGE (V) C TEMPERATURE (°C) OUT = 4.7µF 3400 G04 3400 G05
SW Pin Fixed Frequency, Continuous Inductor Current Fixed Frequency and Burst Mode Operation Operation VOUT Transient Response
VSW VOUT(AC) VOUT(AC) 1V/DIV 100mV/DIV 100mV/DIV 60mA 100mA IOUT IOUT 0V 10µA 40mA VIN = 1.3V 100ns/DIV 3400 G07 VIN = 1.3V 10ms/DIV 3400 G08 VIN = 1.3V 100µs/DIV 3400 G09 VOUT = 3.3V VOUT = 3.3V VOUT = 3.3V IOUT = 50mA IOUT = 60mA TO 10µA IOUT = 40mA TO 100mA L = 6.8µH L = 6.8µH L = 6.8µH COUT = 4.7µF COUT = 4.7µF COUT = 4.7µF 3400fa 3
W U TYPICAL PERFOR A CE CHARACTERISTICS Output Load Burst Mode Threshold Minimum Start-Up Voltage vs VIN VOUT vs Temperature vs Load Current
3.36 1.4 L = 4.7µH FIGURE 1 CIRCUIT TA = 25°C TA = 25°C IO = 10mA 3.34 1.3 20 VOUT = 3.3V VOUT = 5V 3.32 1.2 (V) 3.30 1.1 OUTV 10 3.28 1.0 OUTPUT CURRENT (mA) START-UP VOLTAGE (V) 3.26 0.9 0 3.24 0.8 0.9 1.5 2.1 2.7 3.3 3.9 4.5 –60 –30 0 30 60 90 120 0.1 1 10 100 VIN (V) TEMPERATURE (°C) IOUT (mA) CURRENT SOURCE LOAD 3400 G01 3400 G02 3400 G03
Normalized Oscillator Frequency No Load Battery Current vs VBATT vs Temperature SW Pin Antiringing Operation
1000 1.01 VOUT = 3.3V TA = 25°C 1.00 µA) 0.99 VSW 1V/DIV 100 0.98 0.97 0V BATTERY CURRENT ( NORMALIZED FREQUENCY 0.96 VIN = 1.3V 100ns/DIV 3400 G06 VOUT = 3.3V 10 0.95 IOUT = 10mA 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 –50 –30 –10 10 30 50 70 90 L = 6.8µH BATTERY VOLTAGE (V) C TEMPERATURE (°C) OUT = 4.7µF 3400 G04 3400 G05
SW Pin Fixed Frequency, Continuous Inductor Current Fixed Frequency and Burst Mode Operation Operation VOUT Transient Response
VSW VOUT(AC) VOUT(AC) 1V/DIV 100mV/DIV 100mV/DIV 60mA 100mA IOUT IOUT 0V 10µA 40mA VIN = 1.3V 100ns/DIV 3400 G07 VIN = 1.3V 10ms/DIV 3400 G08 VIN = 1.3V 100µs/DIV 3400 G09 VOUT = 3.3V VOUT = 3.3V VOUT = 3.3V IOUT = 50mA IOUT = 60mA TO 10µA IOUT = 40mA TO 100mA L = 6.8µH L = 6.8µH L = 6.8µH COUT = 4.7µF COUT = 4.7µF COUT = 4.7µF 3400fa 3