Datasheet LT1970 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | 500mA Power Op Amp with Adjustable Precision Current Limit |
| Pages / Page | 26 / 7 — Typical perForMance characTerisTics. Low Level Current Sense. Logic … |
| File Format / Size | PDF / 402 Kb |
| Document Language | English |
Typical perForMance characTerisTics. Low Level Current Sense. Logic Output Level. Maximum Output Current. Transfer Curve
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Text Version of Document
LT1970
Typical perForMance characTerisTics Low Level Current Sense Logic Output Level Maximum Output Current Transfer Curve vs Sink Current (Output Low) vs Temperature
25 1.0 V+ = 15V 1600 V+ = 15V 20 0.9 V– = –15V 1400 V– = –15V 15 0.8 SOURCING 1200 10 CURRENT 0.7 SOURCE 5 0.6 1000 (mV) 25°C 0 0.5 800 125°C V SENSE –5 0.4 600 SINK –10 SINKING 0.3 CURRENT –55°C OUTPUT CURRENT (mA) 400 –15 LOGIC OUTPUT VOLTAGE (V) 0.2 –20 0.1 200 –25 0 0 0 25 50 75 100 125 150 175 200 225 250 0.001 0.01 0.1 1 10 100 –75 –50 –25 0 25 50 75 100 125 VCSNK = VCSRC (mV) SINK CURRENT (mA) TEMPERATURE (°C) 1970 G22 1970 G23 1970 G24
Output Stage Quiescent Current Safe Operating Area vs Supply Voltage
1200 10 IOUT AT 10% DUTY CYCLE 8 + 1000 IV 125°C 6 25°C 800 4 –55°C 2 600 0 – PEAK (mA) IV –55°C –2 I OUT 400 –4 25°C 200 OUTPUT STAGE CURRENT (mA) –6 125°C –8 0 –10 0 5 10 15 20 25 30 35 40 0 2 4 6 8 10 12 14 16 18 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (±V) 1970 G25 1970 G26
Control Stage Quiescent Current Supply Current vs Supply Voltage vs Supply Voltage in Shutdown
5 800 ICC VENABLE = 0V 4 125°C 85°C 700 + (µA) 3 25°C V –55°C + I 600 25°C 2 CC –55°C 1 500 0 400 IEE –1 –55°C 300 –2 SUPPLY CURRENT (mA) 25°C 200 –3 125°C –4 TOTAL SUPPLY CURRENT, I 100 –5 0 0 2 4 6 8 10 12 14 16 18 0 2 4 6 8 10 12 14 16 18 SUPPLY VOLTAGE (±V) SUPPLY VOLTAGE (V) 1970 G27 1970 G28 1970fe For more information www.linear.com/LT1970 7 Document Outline Description Typical Application Absolute Maximum Ratings Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Related Parts
Typical perForMance characTerisTics Low Level Current Sense Logic Output Level Maximum Output Current Transfer Curve vs Sink Current (Output Low) vs Temperature
25 1.0 V+ = 15V 1600 V+ = 15V 20 0.9 V– = –15V 1400 V– = –15V 15 0.8 SOURCING 1200 10 CURRENT 0.7 SOURCE 5 0.6 1000 (mV) 25°C 0 0.5 800 125°C V SENSE –5 0.4 600 SINK –10 SINKING 0.3 CURRENT –55°C OUTPUT CURRENT (mA) 400 –15 LOGIC OUTPUT VOLTAGE (V) 0.2 –20 0.1 200 –25 0 0 0 25 50 75 100 125 150 175 200 225 250 0.001 0.01 0.1 1 10 100 –75 –50 –25 0 25 50 75 100 125 VCSNK = VCSRC (mV) SINK CURRENT (mA) TEMPERATURE (°C) 1970 G22 1970 G23 1970 G24
Output Stage Quiescent Current Safe Operating Area vs Supply Voltage
1200 10 IOUT AT 10% DUTY CYCLE 8 + 1000 IV 125°C 6 25°C 800 4 –55°C 2 600 0 – PEAK (mA) IV –55°C –2 I OUT 400 –4 25°C 200 OUTPUT STAGE CURRENT (mA) –6 125°C –8 0 –10 0 5 10 15 20 25 30 35 40 0 2 4 6 8 10 12 14 16 18 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (±V) 1970 G25 1970 G26
Control Stage Quiescent Current Supply Current vs Supply Voltage vs Supply Voltage in Shutdown
5 800 ICC VENABLE = 0V 4 125°C 85°C 700 + (µA) 3 25°C V –55°C + I 600 25°C 2 CC –55°C 1 500 0 400 IEE –1 –55°C 300 –2 SUPPLY CURRENT (mA) 25°C 200 –3 125°C –4 TOTAL SUPPLY CURRENT, I 100 –5 0 0 2 4 6 8 10 12 14 16 18 0 2 4 6 8 10 12 14 16 18 SUPPLY VOLTAGE (±V) SUPPLY VOLTAGE (V) 1970 G27 1970 G28 1970fe For more information www.linear.com/LT1970 7 Document Outline Description Typical Application Absolute Maximum Ratings Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Related Parts
