Datasheet LTC3838-2 (Analog Devices) - 9
| Manufacturer | Analog Devices |
| Description | Dual, Fast, Accurate Step-Down DC/DC Controller with External Reference Voltage and Dual Differential Output Sensing |
| Pages / Page | 56 / 9 — Typical perForMance characTerisTics. Current Sense Voltage. Maximum … |
| File Format / Size | PDF / 968 Kb |
| Document Language | English |
Typical perForMance characTerisTics. Current Sense Voltage. Maximum Current Sense Voltage. vs ITH Voltage. vs Temperature
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LTC3838-2
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 FORCED CONTINUOUS MODE 120 100 100 100 80 60 80 80 40 60 60 20 0 40 40 –20 CURRENT SENSE VOLTAGE (mV) 20 20 –40 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) 38382 G28 38382 G29 38382 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) 38382 G30 38381 G31 38382 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 BOTH CHANNELS ON UVLO RELEASE 35 4.3 (INTVCC RISING) 3.0 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) 38382 G33 38382 G34 38382 G35 38382fa For more information www.linear.com/3838-2 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance 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 FORCED CONTINUOUS MODE 120 100 100 100 80 60 80 80 40 60 60 20 0 40 40 –20 CURRENT SENSE VOLTAGE (mV) 20 20 –40 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) 38382 G28 38382 G29 38382 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) 38382 G30 38381 G31 38382 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 BOTH CHANNELS ON UVLO RELEASE 35 4.3 (INTVCC RISING) 3.0 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) 38382 G33 38382 G34 38382 G35 38382fa For more information www.linear.com/3838-2 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
