Datasheet LTC3620 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | Ultralow Power 15mA Synchronous Step-Down Switching Regulator |
| 页数 / 页 | 18 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS. Switching Frequency. LTC3620 … |
| 文件格式/大小 | PDF / 331 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Switching Frequency. LTC3620 Feedback Voltage. vs Load Current, FMIN/MODE. Load Regulation
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LTC3620
TYPICAL PERFORMANCE CHARACTERISTICS Switching Frequency LTC3620 Feedback Voltage vs Load Current, FMIN/MODE Load Regulation vs Temperature
1000 0.5 620 200kHz, EXTERNAL VIN = 3.6V VIN = 3.6V FMIN/MODE = 0V VOUT = 1.1V 615 VOUT = 1.1V FMIN/MODE = VIN FMIN/MODE = 0V FMIN/MODE = 0V 0.3 TA = 25°C 610 605 0.1 100 (mV) 600 FB TAGE CHANGE (%) V –0.1 595 VOL OUT 590 V –0.3 SWITCHING FREQUENCY (kHz) TA = 25°C 585 VIN = 3.6V VOUT = 1.1V 10 –0.5 580 0.01 0.1 1 10 20 0 5 10 15 –50 0 50 100 130 LOAD CURRENT (mA) LOAD CURRENT (mA) TEMPERATURE (°C) 3620 G01 3620 G02 3620 G03
LTC3620-1 Feedback Voltage vs Temperature Quiescent Current vs Temperature UVLO Threshold vs Temperature
1.125 30 2.85 VIN = 3.6V VOUT = 1.1V VOUT = 1.1V 1.120 FMIN/MODE = 0V 28 FMIN/MODE = V 2.84 IN FMIN/MODE = 0V 26 1.115 2.83 24 2.82 1.110 22 2.81 1.105 V (V) IN = 5V 20 FB 2.80 V 1.100 VIN = 3.6V 18 2.79 1.095 16 UVLO THRESHOLD (V) 2.78 1.090 QUIESCENT CURRENT (μA) 14 2.77 1.085 12 2.76 1.080 10 2.75 –50 0 50 100 130 –50 0 50 100 130 –50 0 50 100 130 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3620 G04 3620 G05 3620 G06
LOBATB Threshold Peak Inductor Current Switching Waveforms at 250μA vs Temperature vs Temperature Load, FMIN/MODE = 0V
3.05 40 VOUT = 1.1V VOUT = 1.1V 3.04 FMIN/MODE = 0V L = 22μH VOUT (AC) 39 3.03 20mV/DIV VIN = 5.5V 3.02 38 3.01 VSW 2V/DIV 3.00 (mA) 37 2.99 I PEAK V 36 IN = 3.6V 2.98 IL LOBATB THRESHOLD (V) 25mA/DIV 2.97 35 V 4μs/DIV 3620 G09 OUT = 1.1V 2.96 VIN = 3.6V 2.95 34 TA = 25°C –50 0 50 100 130 –50 0 50 100 130 TEMPERATURE (°C) TEMPERATURE (°C) 3620 G07 3620 G08 3620fa 4 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 APPLICATIONS PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATIONS RELATED PARTS
TYPICAL PERFORMANCE CHARACTERISTICS Switching Frequency LTC3620 Feedback Voltage vs Load Current, FMIN/MODE Load Regulation vs Temperature
1000 0.5 620 200kHz, EXTERNAL VIN = 3.6V VIN = 3.6V FMIN/MODE = 0V VOUT = 1.1V 615 VOUT = 1.1V FMIN/MODE = VIN FMIN/MODE = 0V FMIN/MODE = 0V 0.3 TA = 25°C 610 605 0.1 100 (mV) 600 FB TAGE CHANGE (%) V –0.1 595 VOL OUT 590 V –0.3 SWITCHING FREQUENCY (kHz) TA = 25°C 585 VIN = 3.6V VOUT = 1.1V 10 –0.5 580 0.01 0.1 1 10 20 0 5 10 15 –50 0 50 100 130 LOAD CURRENT (mA) LOAD CURRENT (mA) TEMPERATURE (°C) 3620 G01 3620 G02 3620 G03
LTC3620-1 Feedback Voltage vs Temperature Quiescent Current vs Temperature UVLO Threshold vs Temperature
1.125 30 2.85 VIN = 3.6V VOUT = 1.1V VOUT = 1.1V 1.120 FMIN/MODE = 0V 28 FMIN/MODE = V 2.84 IN FMIN/MODE = 0V 26 1.115 2.83 24 2.82 1.110 22 2.81 1.105 V (V) IN = 5V 20 FB 2.80 V 1.100 VIN = 3.6V 18 2.79 1.095 16 UVLO THRESHOLD (V) 2.78 1.090 QUIESCENT CURRENT (μA) 14 2.77 1.085 12 2.76 1.080 10 2.75 –50 0 50 100 130 –50 0 50 100 130 –50 0 50 100 130 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3620 G04 3620 G05 3620 G06
LOBATB Threshold Peak Inductor Current Switching Waveforms at 250μA vs Temperature vs Temperature Load, FMIN/MODE = 0V
3.05 40 VOUT = 1.1V VOUT = 1.1V 3.04 FMIN/MODE = 0V L = 22μH VOUT (AC) 39 3.03 20mV/DIV VIN = 5.5V 3.02 38 3.01 VSW 2V/DIV 3.00 (mA) 37 2.99 I PEAK V 36 IN = 3.6V 2.98 IL LOBATB THRESHOLD (V) 25mA/DIV 2.97 35 V 4μs/DIV 3620 G09 OUT = 1.1V 2.96 VIN = 3.6V 2.95 34 TA = 25°C –50 0 50 100 130 –50 0 50 100 130 TEMPERATURE (°C) TEMPERATURE (°C) 3620 G07 3620 G08 3620fa 4 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 APPLICATIONS PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATIONS RELATED PARTS