Datasheet LTC3838-1 (Analog Devices) - 9
| 制造商 | Analog Devices |
| 描述 | Dual, Fast, Accurate Step-Down DC/DC Controller with Dual Differential Output Sensing |
| 页数 / 页 | 54 / 9 — Typical perForMance characTerisTics. Current Sense Voltage. Maximum … |
| 文件格式/大小 | PDF / 890 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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LTC3838-1
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 100 100 100 80 60 80 80 40 VRNG = INTVCC VRNG = INTVCC 60 60 20 0 40 V 40 RNG = SGND VRNG = SGND –20 CURRENT SENSE VOLTAGE (mV) 20 20 –40 VRNG = INTVCC VRNG = SGND MAXIMUM CURRENT SENSE VOLTAGE (mV) –60 0 MAXIMUM CURRENT SENSE VOLTAGE (mV) 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) 38381 G28 38381 G29 38381 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) 38381 G30 38381 G31 38381 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 BOTH CHANNELS ON 30 4.1 25 2.5 CHANNEL 1 ON ONLY OR 3.9 20 CHANNEL 2 ON ONLY UVLO LOCK CURRENT (µA) 15 2.0 3.7 (INTV UVLO THRESHOLDS (V) CC FALLING) 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) 38381 G33 38381 G34 38381 G35 38381fa For more information www.linear.com3838-1 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Functional Diagram Operation Applications Information 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 100 100 100 80 60 80 80 40 VRNG = INTVCC VRNG = INTVCC 60 60 20 0 40 V 40 RNG = SGND VRNG = SGND –20 CURRENT SENSE VOLTAGE (mV) 20 20 –40 VRNG = INTVCC VRNG = SGND MAXIMUM CURRENT SENSE VOLTAGE (mV) –60 0 MAXIMUM CURRENT SENSE VOLTAGE (mV) 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) 38381 G28 38381 G29 38381 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) 38381 G30 38381 G31 38381 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 BOTH CHANNELS ON 30 4.1 25 2.5 CHANNEL 1 ON ONLY OR 3.9 20 CHANNEL 2 ON ONLY UVLO LOCK CURRENT (µA) 15 2.0 3.7 (INTV UVLO THRESHOLDS (V) CC FALLING) 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) 38381 G33 38381 G34 38381 G35 38381fa For more information www.linear.com3838-1 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts