Datasheet LT1681 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Dual Transistor Synchronous Forward Controller |
| Pages / Page | 20 / 5 — TYPICAL PERFOR A CE CHARACTERISTICS. IBST Boost Supply Current. ICC … |
| File Format / Size | PDF / 281 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS. IBST Boost Supply Current. ICC Supply Current. UVLO ICC Supply Current. vs Temperature
Model Line for this Datasheet
Text Version of Document
LT1681
W U TYPICAL PERFOR A CE CHARACTERISTICS IBST Boost Supply Current ICC Supply Current UVLO ICC Supply Current vs Temperature vs SHDN Pin Voltage vs Temperature
5.2 60 1 TA = 25°C 5.1 µA) 40 0.8 5.0 20 SUPPLY CURRENT (mA) SUPPLY CURRENT ( CC 4.9 BOOST SUPPLY CURRENT (mA) I CC 0.6 I BST UVLO I 4.8 0 0.5 –55 –40 0 40 80 125 0 0.2 0.4 0.6 0.8 1.0 1.2 –55 –40 0 40 80 125 TEMPERATURE (°C) SHDN PIN CURRENT (V) TEMPERATURE (°C) 1681 G04 1681 G05 1681 G06
5VREF Short-Circuit Current Limit Error Amp Reference 5VREF Voltage vs Temperature vs Temperature vs Temperature
5.10 60 1.260 5.05 1.255 50 5.00 1.250 VOLTAGE (V) REF 5V 40 4.95 1.245 ERROR AMP REFERENCE (V) SHORT-CIRCUIT CURRENT LIMIT (mA) REF 5V 4.90 30 1.240 –55 –40 0 40 80 125 –55 –40 0 40 80 125 –55 –40 0 40 80 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1681 G07 1681 G08 1681 G09
VC Pin Short-Circuit Current Limit Soft-Start Output Current Soft-Start Output Current vs Temperature vs Temperature vs Soft-Start Pin Voltage
25 12 60 VSS = 2V TA = 25°C µA) µA) 11 20 40 10 15 20 9 SOFT-START OUTPUT CURRENT ( SOFT-START OUTPUT CURRENT ( PIN SHORT-CIRCUIT CURRENT LIMIT (mA) CV 10 8 0 –55 –40 0 40 80 125 –55 –40 0 40 80 125 0 100 200 300 400 500 TEMPERATURE (°C) TEMPERATURE (°C) SOFT-START PIN VOLTAGE (mV) 1681 G10 1681 G11 1681 G12 1681f 5
W U TYPICAL PERFOR A CE CHARACTERISTICS IBST Boost Supply Current ICC Supply Current UVLO ICC Supply Current vs Temperature vs SHDN Pin Voltage vs Temperature
5.2 60 1 TA = 25°C 5.1 µA) 40 0.8 5.0 20 SUPPLY CURRENT (mA) SUPPLY CURRENT ( CC 4.9 BOOST SUPPLY CURRENT (mA) I CC 0.6 I BST UVLO I 4.8 0 0.5 –55 –40 0 40 80 125 0 0.2 0.4 0.6 0.8 1.0 1.2 –55 –40 0 40 80 125 TEMPERATURE (°C) SHDN PIN CURRENT (V) TEMPERATURE (°C) 1681 G04 1681 G05 1681 G06
5VREF Short-Circuit Current Limit Error Amp Reference 5VREF Voltage vs Temperature vs Temperature vs Temperature
5.10 60 1.260 5.05 1.255 50 5.00 1.250 VOLTAGE (V) REF 5V 40 4.95 1.245 ERROR AMP REFERENCE (V) SHORT-CIRCUIT CURRENT LIMIT (mA) REF 5V 4.90 30 1.240 –55 –40 0 40 80 125 –55 –40 0 40 80 125 –55 –40 0 40 80 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1681 G07 1681 G08 1681 G09
VC Pin Short-Circuit Current Limit Soft-Start Output Current Soft-Start Output Current vs Temperature vs Temperature vs Soft-Start Pin Voltage
25 12 60 VSS = 2V TA = 25°C µA) µA) 11 20 40 10 15 20 9 SOFT-START OUTPUT CURRENT ( SOFT-START OUTPUT CURRENT ( PIN SHORT-CIRCUIT CURRENT LIMIT (mA) CV 10 8 0 –55 –40 0 40 80 125 –55 –40 0 40 80 125 0 100 200 300 400 500 TEMPERATURE (°C) TEMPERATURE (°C) SOFT-START PIN VOLTAGE (mV) 1681 G10 1681 G11 1681 G12 1681f 5
