Datasheet LT3150 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Fast Transient Response, Low Input Voltage, Very Low Dropout Linear Regulator Controller |
| Pages / Page | 20 / 4 — TYPICAL PERFOR A CE CHARACTERISTICS Boost Switching Regulator. Oscillator … |
| File Format / Size | PDF / 265 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS Boost Switching Regulator. Oscillator Frequency. SHDN1 Input Bias Current
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LT3150
W U TYPICAL PERFOR A CE CHARACTERISTICS Boost Switching Regulator Oscillator Frequency SHDN1 Input Bias Current Switch VCESAT vs Switch Current vs Temperature vs VSHDN1
700 2.00 50 TA = 25°C TA = 25°C 600 1.75 VIN = 5V µA) 40 1.50 500 V 1.25 IN = 1.5V 30 400 (mV) 1.00 CESAT 300 V 0.75 20 200 0.50 10 SWITCHING FREQUENCY (MHz) 100 0.25 SHDN1 INPUT BIAS CURRENT ( 0 0 0 0 100 200 300 400 500 600 700 –50 –25 0 25 50 75 100 0 1 2 3 4 5 SWITCH CURRENT (mA) TEMPERATURE (°C) SHDN1 PIN VOLTAGE (V) 3150 G01 3150 G02 3150 G03
FB1 Reference Voltage Switch Current Limit vs Duty Cycle vs Temperature
1000 1.25 900 1.24 800 70°C VOLTAGE 700 1.23 600 25°C 500 1.22 –40°C 400 SWITCH CURRENT LIMIT (mA) FB1 REFERENCE VOLTAGE (V) 1.21 300 200 1.20 10 20 30 40 50 60 70 80 –50 –25 0 25 50 75 100 DUTY CYCLE (%) TEMPERATURE (°C) 3150 G04 3150 G05
Linear Regulator Controller V FB2 Reference Voltage FB2 Input Bias Current IN2 Quiescent Current vs Temperature vs Temperature vs Temperature
19 1.222 4.0 18 1.220 3.5 17 1.218 16 µA) 1.216 3.0 15 VIN = 12V 1.214 14 VIN = 20V 2.5 13 1.212 12 V 1.210 2.0 IN = 8V 11 1.208 1.5 10 1.206 QUIESCENT CURRENT (mA) 9 1.204 1.0 VIN = 20V IN2 8 FB2 REFERENCE VOLTAGE (V) V 1.202 FB2 INPUT BIAS CURRENT ( V 7 0.5 IN = 12V 6 1.200 VIN = 8V 5 1.198 0 –75 –50 –25 0 25 50 75 100 125 150 175 –75 –50 –25 0 25 50 75 100 125 150 175 –75 – 50 –25 0 25 50 75 100 125 150 175 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3150 G06 3150 G07 3150 G08 3150f 4
W U TYPICAL PERFOR A CE CHARACTERISTICS Boost Switching Regulator Oscillator Frequency SHDN1 Input Bias Current Switch VCESAT vs Switch Current vs Temperature vs VSHDN1
700 2.00 50 TA = 25°C TA = 25°C 600 1.75 VIN = 5V µA) 40 1.50 500 V 1.25 IN = 1.5V 30 400 (mV) 1.00 CESAT 300 V 0.75 20 200 0.50 10 SWITCHING FREQUENCY (MHz) 100 0.25 SHDN1 INPUT BIAS CURRENT ( 0 0 0 0 100 200 300 400 500 600 700 –50 –25 0 25 50 75 100 0 1 2 3 4 5 SWITCH CURRENT (mA) TEMPERATURE (°C) SHDN1 PIN VOLTAGE (V) 3150 G01 3150 G02 3150 G03
FB1 Reference Voltage Switch Current Limit vs Duty Cycle vs Temperature
1000 1.25 900 1.24 800 70°C VOLTAGE 700 1.23 600 25°C 500 1.22 –40°C 400 SWITCH CURRENT LIMIT (mA) FB1 REFERENCE VOLTAGE (V) 1.21 300 200 1.20 10 20 30 40 50 60 70 80 –50 –25 0 25 50 75 100 DUTY CYCLE (%) TEMPERATURE (°C) 3150 G04 3150 G05
Linear Regulator Controller V FB2 Reference Voltage FB2 Input Bias Current IN2 Quiescent Current vs Temperature vs Temperature vs Temperature
19 1.222 4.0 18 1.220 3.5 17 1.218 16 µA) 1.216 3.0 15 VIN = 12V 1.214 14 VIN = 20V 2.5 13 1.212 12 V 1.210 2.0 IN = 8V 11 1.208 1.5 10 1.206 QUIESCENT CURRENT (mA) 9 1.204 1.0 VIN = 20V IN2 8 FB2 REFERENCE VOLTAGE (V) V 1.202 FB2 INPUT BIAS CURRENT ( V 7 0.5 IN = 12V 6 1.200 VIN = 8V 5 1.198 0 –75 –50 –25 0 25 50 75 100 125 150 175 –75 –50 –25 0 25 50 75 100 125 150 175 –75 – 50 –25 0 25 50 75 100 125 150 175 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3150 G06 3150 G07 3150 G08 3150f 4
