Datasheet LTC3836 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | Dual 2-Phase, No RSENSE Low VIN Synchronous Controller |
| 页数 / 页 | 30 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. … |
| 文件格式/大小 | PDF / 474 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Maximum Current Sense Voltage
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LTC3836
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Maximum Current Sense Voltage Regulated Feedback Voltage Shutdown (RUN/SS) Threshold vs ITH Pin Voltage vs Temperature vs Temperature
100 0.606 1.0 FORCED CONTINUOUS MODE 0.605 0.9 80 PULSE-SKIPPING 0.604 0.8 MODE 0.603 0.7 60 0.602 0.6 0.601 40 0.600 0.5 0.599 0.4 20 0.598 CURRENT LIMIT (%) RUN/SS VOLTAGE (V) 0.3 FEEDBACK VOLTAGE (V) 0.597 0.2 0 0.596 0.1 0.595 –20 0.594 0 0.5 1 1.5 2 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 ITH VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 3836 G09 3836 G11 3836 G12
RUN/SS Pull-Up Current Maximum Current Sense Oscillator Frequency vs Temperature Threshold vs Temperature vs Temperature
1.0 135 10 IPRG = FLOAT 8 A) 0.9 μ 6 130 4 0.8 2 0.7 125 0 –2 0.6 –4 120 –6 RUN/SS PULL-UP CURRENT ( 0.5 NROMALIZED FREQUENCY (%) –8 0.4 MAXIMUM CURRENT SENSE THRESHOLD (mV) 115 –10 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3836 G13 3836 G14 3836 G15
Undervoltage Lockout Threshold Shutdown Quiescent Current RUN/SS Start-Up Current vs Temperature vs Input Voltage vs Input Voltage
2.50 18 0.9 RUN/SS = 0V 16 A) 0.8 2.45 μ VIN RISING A) 14 0.7 2.40 μ 12 0.6 2.35 10 0.5 ) VOLTAGE (V) 2.30 IN 8 0.4 VIN FALLING 2.25 6 0.3 INPUT (V 2.20 SHUTDOWN CURRENT ( 4 0.2 RUN/SS PIN PULL-UP CURRENT ( 2.15 2 0.1 2.10 0 0 –60 –40 –20 0 20 40 60 80 100 2.5 3.0 3.5 4.0 4.5 2.5 3.0 3.5 4.0 4.5 TEMPERATURE (°C) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3836 G17 3836 G18 3836 G16 3836fb 5 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS FUNCTIONAL DIAGRAM OPERATION APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION REVISION HISTORY RELATED PARTS
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. Maximum Current Sense Voltage Regulated Feedback Voltage Shutdown (RUN/SS) Threshold vs ITH Pin Voltage vs Temperature vs Temperature
100 0.606 1.0 FORCED CONTINUOUS MODE 0.605 0.9 80 PULSE-SKIPPING 0.604 0.8 MODE 0.603 0.7 60 0.602 0.6 0.601 40 0.600 0.5 0.599 0.4 20 0.598 CURRENT LIMIT (%) RUN/SS VOLTAGE (V) 0.3 FEEDBACK VOLTAGE (V) 0.597 0.2 0 0.596 0.1 0.595 –20 0.594 0 0.5 1 1.5 2 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 ITH VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 3836 G09 3836 G11 3836 G12
RUN/SS Pull-Up Current Maximum Current Sense Oscillator Frequency vs Temperature Threshold vs Temperature vs Temperature
1.0 135 10 IPRG = FLOAT 8 A) 0.9 μ 6 130 4 0.8 2 0.7 125 0 –2 0.6 –4 120 –6 RUN/SS PULL-UP CURRENT ( 0.5 NROMALIZED FREQUENCY (%) –8 0.4 MAXIMUM CURRENT SENSE THRESHOLD (mV) 115 –10 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 –60 –40 –20 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3836 G13 3836 G14 3836 G15
Undervoltage Lockout Threshold Shutdown Quiescent Current RUN/SS Start-Up Current vs Temperature vs Input Voltage vs Input Voltage
2.50 18 0.9 RUN/SS = 0V 16 A) 0.8 2.45 μ VIN RISING A) 14 0.7 2.40 μ 12 0.6 2.35 10 0.5 ) VOLTAGE (V) 2.30 IN 8 0.4 VIN FALLING 2.25 6 0.3 INPUT (V 2.20 SHUTDOWN CURRENT ( 4 0.2 RUN/SS PIN PULL-UP CURRENT ( 2.15 2 0.1 2.10 0 0 –60 –40 –20 0 20 40 60 80 100 2.5 3.0 3.5 4.0 4.5 2.5 3.0 3.5 4.0 4.5 TEMPERATURE (°C) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3836 G17 3836 G18 3836 G16 3836fb 5 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS FUNCTIONAL DIAGRAM OPERATION APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION REVISION HISTORY RELATED PARTS