Datasheet LTC3839 (Analog Devices) - 8
| 制造商 | Analog Devices |
| 描述 | Fast, Accurate, 2-Phase, Single-Output Step-Down DC/DC Controller with Differential Output Sensing |
| 页数 / 页 | 50 / 8 — TYPICAL PERFORMANCE CHARACTERISTICS. Current Sense Voltage. Maximum … |
| 文件格式/大小 | PDF / 944 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Current Sense Voltage. Maximum Current Sense Voltage. vs ITH Voltage. vs Temperature
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LTC3839
TYPICAL PERFORMANCE CHARACTERISTICS Current Sense Voltage Maximum Current Sense Voltage Maximum Current Sense Voltage vs ITH Voltage vs Temperature vs Voltage on SENSE– Pin
120 120 120 FORCED CONTINUOUS MODE 100 VRNG = 2V VRNG = 2V 100 100 80 60 80 – VOLTAGE (mV) 80 40 60 60 20 VRNG = 1V VRNG = 1V 0 40 V 40 RNG = 0.6V VRNG = 0.6V –20 CURRENT SENSE VOLTAGE (mV) VRNG = 2V 20 20 –40 VRNG = 1V VRNG = 0.6V MAXIMUM CURRENT SENSE VOLTAGE (mV) –60 0 MAXIMUM CURRENT SENSE 0 0 0.4 0.8 1.2 1.6 2 2.4 –50 –25 0 25 50 75 100 125 150 –0.5 0.5 1.5 2.5 3.5 4.5 5.5 ITH VOLTAGE (V) TEMPERATURE (°C) SENSE PIN VOLTAGE (V) 3839 G28 3839 G29 3839 G22
RUN Pin Thresholds RUN Pull-Up Currents TRACK/SS Pull-Up Currents vs Temperature vs Temperature vs Temperature
1.6 16 1.20 1.4 SWITCHING REGION 14 1.15 1.2 12 RUN PIN ABOVE 1.2V 1.10 SWITCHING THRESHOLD 1.0 STAND-BY REGION 10 1.05 0.8 8 1.00 0.6 CURRENT (µA) 6 CURRENT (µA) 0.95 SHUTDOWN REGION RUN PIN BELOW 1.2V RUN PIN THRESHOLDS (V) 0.4 4 SWITCHING THRESHOLD 0.90 0.2 2 0.85 0 0 0.80 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3839 G30 3839 G31 3839 G32
INTVCC Undervoltage Lockout Shutdown Current Into VIN Pin Quiescent Current Into VIN Pin Thresholds vs Temperature vs Voltage on VIN Pin vs Temperature
4.5 40 3.5 UVLO RELEASE 35 4.3 (INTVCC RISING) 3.0 30 4.1 25 2.5 3.9 20 UVLO LOCK CURRENT (µA) 15 2.0 3.7 (INTV UVLO THRESHOLDS (V) CC FALLING) 10 QUIESCENT CURRENT (mA) 1.5 3.5 130°C 5 25°C –45°C 3.3 0 1.0 –50 –25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 35 40 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VIN (V) TEMPERATURE (°C) 3839 G33 3839 G34 3839 G35 3839fa 8 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Functional Diagram Operation Typical Applications Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Current Sense Voltage Maximum Current Sense Voltage Maximum Current Sense Voltage vs ITH Voltage vs Temperature vs Voltage on SENSE– Pin
120 120 120 FORCED CONTINUOUS MODE 100 VRNG = 2V VRNG = 2V 100 100 80 60 80 – VOLTAGE (mV) 80 40 60 60 20 VRNG = 1V VRNG = 1V 0 40 V 40 RNG = 0.6V VRNG = 0.6V –20 CURRENT SENSE VOLTAGE (mV) VRNG = 2V 20 20 –40 VRNG = 1V VRNG = 0.6V MAXIMUM CURRENT SENSE VOLTAGE (mV) –60 0 MAXIMUM CURRENT SENSE 0 0 0.4 0.8 1.2 1.6 2 2.4 –50 –25 0 25 50 75 100 125 150 –0.5 0.5 1.5 2.5 3.5 4.5 5.5 ITH VOLTAGE (V) TEMPERATURE (°C) SENSE PIN VOLTAGE (V) 3839 G28 3839 G29 3839 G22
RUN Pin Thresholds RUN Pull-Up Currents TRACK/SS Pull-Up Currents vs Temperature vs Temperature vs Temperature
1.6 16 1.20 1.4 SWITCHING REGION 14 1.15 1.2 12 RUN PIN ABOVE 1.2V 1.10 SWITCHING THRESHOLD 1.0 STAND-BY REGION 10 1.05 0.8 8 1.00 0.6 CURRENT (µA) 6 CURRENT (µA) 0.95 SHUTDOWN REGION RUN PIN BELOW 1.2V RUN PIN THRESHOLDS (V) 0.4 4 SWITCHING THRESHOLD 0.90 0.2 2 0.85 0 0 0.80 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3839 G30 3839 G31 3839 G32
INTVCC Undervoltage Lockout Shutdown Current Into VIN Pin Quiescent Current Into VIN Pin Thresholds vs Temperature vs Voltage on VIN Pin vs Temperature
4.5 40 3.5 UVLO RELEASE 35 4.3 (INTVCC RISING) 3.0 30 4.1 25 2.5 3.9 20 UVLO LOCK CURRENT (µA) 15 2.0 3.7 (INTV UVLO THRESHOLDS (V) CC FALLING) 10 QUIESCENT CURRENT (mA) 1.5 3.5 130°C 5 25°C –45°C 3.3 0 1.0 –50 –25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 35 40 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VIN (V) TEMPERATURE (°C) 3839 G33 3839 G34 3839 G35 3839fa 8 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Functional Diagram Operation Typical Applications Typical Application Related Parts