Datasheet LT1110 (Linear Technology) - 4
| Manufacturer | Linear Technology |
| Description | Micropower DC-DC Converter Adjustable and Fixed 5V, 12V |
| Pages / Page | 16 / 4 — TYPICAL PERFOR A CE CHAR C. A TERISTICS. Saturation Voltage. Duty Cycle. … |
| File Format / Size | PDF / 323 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHAR C. A TERISTICS. Saturation Voltage. Duty Cycle. Switch Saturation Voltage. Step-Up Mode. Switch On Voltage
Model Line for this Datasheet
Text Version of Document
LT1110
W U TYPICAL PERFOR A CE CHAR C A TERISTICS Saturation Voltage Duty Cycle Switch Saturation Voltage Step-Up Mode
78 500 1.4 V V IN = 3.0V 76 450 IN = 1.5V ISW = 500mA 1.2 V = 2.0V IN 74 400 VIN = 1.5V 72 350 1.0 70 300 0.8 (mV) 68 250 V = 1.2V IN VIN = 5.0V CESAT 0.6 66 CESAT V (V) V 200 DUTY CYCLE (%) V 64 150 IN = 1.0V 0.4 62 100 0.2 60 50 58 0 0 –50 –25 0 25 50 75 100 –50 – 25 0 25 50 75 100 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 TEMPERATURE (°C) TEMPERATURE (°C) I (A) SWITCH LT1110 • TPC04 LT1110 • TPC05 LT1110 • TPC06
Switch On Voltage Minimum/Maximum Frequency vs Step-Down Mode On Time Quiescent Current
1.4 100 400 VIN = 12V 95 380 1.2 90 360 1.0 85 µA) 340 80 0°C ≤ T ≤ A 70°C 320 0.8 75 70 300 0.6 65 280 ON VOLTAGE (V) 60 0.4 260 55 QUIESCENT CURRENT ( 240 0.2 OSCILLATOR FREQUENCY (KHz) 50 220 45 0 40 200 0 0.2 0.4 0.6 0.8 1.0 7 8 9 10 11 12 13 0 3 6 9 12 15 18 21 24 27 30 ISWITCH (A) SWITCH ON TIME ( INPUT VOLTAGE (V) µs) LT1110 • TPC07 LT1110 • TPC09 LT1110 • TPC08
Maximum Switch Current vs Maximum Switch Current vs Quiescent Current RLIM Step-Up RLIM Step-Down
500 1.5 1.5 450 1.3 1.3 µA) 400 1.1 1.1 350 STEP-UP MODE 0.9 VIN ≤ 5V 0.9 300 STEP-DOWN MODE 0.7 0.7 VIN = 12V 250 0.5 0.5 200 SWITCH CURRENT (A) SWITCH CURRENT (A) QUIESCENT CURRENT ( 150 0.3 0.3 100 0.1 0.1 –50 –25 0 25 50 75 100 10 100 1000 10 100 1000 TEMPERATURE (°C) RLIM (Ω) RLIM (Ω) LT1110 • TPC10 LT1110 • TPC11 LT1110 • TPC12 4
W U TYPICAL PERFOR A CE CHAR C A TERISTICS Saturation Voltage Duty Cycle Switch Saturation Voltage Step-Up Mode
78 500 1.4 V V IN = 3.0V 76 450 IN = 1.5V ISW = 500mA 1.2 V = 2.0V IN 74 400 VIN = 1.5V 72 350 1.0 70 300 0.8 (mV) 68 250 V = 1.2V IN VIN = 5.0V CESAT 0.6 66 CESAT V (V) V 200 DUTY CYCLE (%) V 64 150 IN = 1.0V 0.4 62 100 0.2 60 50 58 0 0 –50 –25 0 25 50 75 100 –50 – 25 0 25 50 75 100 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 TEMPERATURE (°C) TEMPERATURE (°C) I (A) SWITCH LT1110 • TPC04 LT1110 • TPC05 LT1110 • TPC06
Switch On Voltage Minimum/Maximum Frequency vs Step-Down Mode On Time Quiescent Current
1.4 100 400 VIN = 12V 95 380 1.2 90 360 1.0 85 µA) 340 80 0°C ≤ T ≤ A 70°C 320 0.8 75 70 300 0.6 65 280 ON VOLTAGE (V) 60 0.4 260 55 QUIESCENT CURRENT ( 240 0.2 OSCILLATOR FREQUENCY (KHz) 50 220 45 0 40 200 0 0.2 0.4 0.6 0.8 1.0 7 8 9 10 11 12 13 0 3 6 9 12 15 18 21 24 27 30 ISWITCH (A) SWITCH ON TIME ( INPUT VOLTAGE (V) µs) LT1110 • TPC07 LT1110 • TPC09 LT1110 • TPC08
Maximum Switch Current vs Maximum Switch Current vs Quiescent Current RLIM Step-Up RLIM Step-Down
500 1.5 1.5 450 1.3 1.3 µA) 400 1.1 1.1 350 STEP-UP MODE 0.9 VIN ≤ 5V 0.9 300 STEP-DOWN MODE 0.7 0.7 VIN = 12V 250 0.5 0.5 200 SWITCH CURRENT (A) SWITCH CURRENT (A) QUIESCENT CURRENT ( 150 0.3 0.3 100 0.1 0.1 –50 –25 0 25 50 75 100 10 100 1000 10 100 1000 TEMPERATURE (°C) RLIM (Ω) RLIM (Ω) LT1110 • TPC10 LT1110 • TPC11 LT1110 • TPC12 4
