Datasheet LTC3838 (Analog Devices) - 9
| 制造商 | Analog Devices |
| 描述 | Dual, Fast, Accurate Step- Down DC/DC Controller with Differential Output Sensing |
| 页数 / 页 | 54 / 9 — Typical perForMance characTerisTics. Current Sense Voltage. Maximum … |
| 文件格式/大小 | PDF / 746 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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LTC3838
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 V 60 20 RNG = 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) 3838 G28 3838 G29 3838 G22
RUN Pin Thresholds RUN Pull-Up Currents TRACK/SS Pull-Up Currents vs Temperature vs Temperature vs Temperature
1.6 8 1.20 1.4 SWITCHING REGION 7 1.15 1.2 6 RUN PIN ABOVE 1.2V 1.10 SWITCHING THRESHOLD 1.0 STAND-BY REGION 5 1.05 0.8 4 1.00 0.6 CURRENT (µA) 3 CURRENT (µA) 0.95 SHUTDOWN REGION RUN PIN BELOW 1.2V RUN PIN THRESHOLDS (V) 0.4 2 SWITCHING THRESHOLD 0.90 0.2 1 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) 3838 G30 3838 G31 3838 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 BOTH CHANNELS ON 4.1 25 2.5 3.9 20 CHANNEL 1 ON ONLY UVLO LOCK CURRENT (µA) 15 2.0 3.7 (INTV UVLO THRESHOLDS (V) CC FALLING) CHANNEL 2 ON ONLY 10 QUIESCENT CURRENT (mA) 3.5 130°C 1.5 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) 3838 G33 3838 G34 3838 G35 3838fb For more information www.linear.com/LTC3838 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Typical Applications Package Description Revision History 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 V 60 20 RNG = 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) 3838 G28 3838 G29 3838 G22
RUN Pin Thresholds RUN Pull-Up Currents TRACK/SS Pull-Up Currents vs Temperature vs Temperature vs Temperature
1.6 8 1.20 1.4 SWITCHING REGION 7 1.15 1.2 6 RUN PIN ABOVE 1.2V 1.10 SWITCHING THRESHOLD 1.0 STAND-BY REGION 5 1.05 0.8 4 1.00 0.6 CURRENT (µA) 3 CURRENT (µA) 0.95 SHUTDOWN REGION RUN PIN BELOW 1.2V RUN PIN THRESHOLDS (V) 0.4 2 SWITCHING THRESHOLD 0.90 0.2 1 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) 3838 G30 3838 G31 3838 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 BOTH CHANNELS ON 4.1 25 2.5 3.9 20 CHANNEL 1 ON ONLY UVLO LOCK CURRENT (µA) 15 2.0 3.7 (INTV UVLO THRESHOLDS (V) CC FALLING) CHANNEL 2 ON ONLY 10 QUIESCENT CURRENT (mA) 3.5 130°C 1.5 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) 3838 G33 3838 G34 3838 G35 3838fb For more information www.linear.com/LTC3838 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Typical Applications Package Description Revision History Typical Application Related Parts