Datasheet LT1970A (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | 500mA Power Op Amp with Adjustable Precision Current Limit |
| Pages / Page | 24 / 7 — Typical perForMance characTerisTics. Low Level Current Sense. Logic … |
| File Format / Size | PDF / 385 Kb |
| Document Language | English |
Typical perForMance characTerisTics. Low Level Current Sense. Logic Output Level. Maximum Output Current. Transfer Curve
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LT1970A
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 1600 V+ = 15V 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) 1970A G22 1970A G23 1970A 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 4 800 –55°C 2 600 0 – PEAK (mA) IV –55°C –2 I OUT 400 –4 25°C –6 200 OUTPUT STAGE CURRENT (mA) 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) 1970A G25 1970A 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) 1970A G27 1970A G28 1970afc For more information www.linear.com/LT1970A 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram And Test Circuit Applications Information Package Description Applications Information 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 1600 V+ = 15V 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) 1970A G22 1970A G23 1970A 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 4 800 –55°C 2 600 0 – PEAK (mA) IV –55°C –2 I OUT 400 –4 25°C –6 200 OUTPUT STAGE CURRENT (mA) 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) 1970A G25 1970A 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) 1970A G27 1970A G28 1970afc For more information www.linear.com/LT1970A 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram And Test Circuit Applications Information Package Description Applications Information Related Parts
