Datasheet LTC3631 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | High Efficiency, High Voltage 100mA Synchronous Step-Down Converter |
| Pages / Page | 22 / 5 — Typical perForMance characTerisTics. Peak Current Trip Threshold. … |
| File Format / Size | PDF / 538 Kb |
| Document Language | English |
Typical perForMance characTerisTics. Peak Current Trip Threshold. Quiescent Supply Current. vs RISET. vs Input Voltage
Model Line for this Datasheet
- LTC3631EDD#PBF LTC3631EDD#TRPBF LTC3631EDD-3.3#PBF LTC3631EDD-3.3#TRPBF LTC3631EDD-5#PBF LTC3631EDD-5#TRPBF LTC3631EMS8E#PBF LTC3631EMS8E#TRPBF LTC3631EMS8E-3.3#PBF LTC3631EMS8E-3.3#TRPBF LTC3631EMS8E-5#PBF LTC3631EMS8E-5#TRPBF LTC3631IDD#PBF LTC3631IDD#TRPBF LTC3631IDD-3.3#PBF LTC3631IDD-3.3#TRPBF LTC3631IDD-5#PBF LTC3631IDD-5#TRPBF LTC3631IMS8E#PBF LTC3631IMS8E#TRPBF LTC3631IMS8E-3.3#PBF LTC3631IMS8E-3.3#TRPBF LTC3631IMS8E-5#PBF LTC3631IMS8E-5#TRPBF
Text Version of Document
LTC3631
Typical perForMance characTerisTics Peak Current Trip Threshold Peak Current Trip Threshold Quiescent Supply Current vs RISET vs Input Voltage vs Input Voltage
240 250 V 14 220 IN = 10V I 225 SET OPEN 200 12 200 SLEEP 180 175 10 160 150 140 8 125 RSET = 500k 120 Y CURRENT (µA) 6 100 100 SHUTDOWN 80 75 SUPPL I 4 SET = GND V IN 60 50 2 PEAK CURRENT TRIP THRESHOLD (mA) 40 PEAK CURRENT TRIP THRESHOLD (mA) 25 20 0 0 0 200 400 600 800 1000 1200 0 5 10 15 20 25 30 35 40 45 50 5 15 25 35 45 RISET (kΩ) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3631 G10 3631 G11 3631 G12
Quiescent Supply Current Switch On-Resistance Switch On-Resistance vs Temperature vs Input Voltage vs Temperature
14 4.5 5 VIN = 10V VIN = 10V 12 4.0 SLEEP 4 3.5 TOP 10 TOP 3.0 ANCE (Ω) 3 8 2.5 Y CURRENT (µA) 6 2.0 BOTTOM BOTTOM 2 SUPPL 4 1.5 SHUTDOWN V IN 1.0 SWITCH 0N-RESISTANCE (Ω) 1 2 SWITCH ON-RESIST 0.5 0 0 –40 –10 20 50 80 110 0 0 10 20 30 40 50 –40 –10 20 50 80 110 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3631 G13 3631 G15 3631 G14
Switch Leakage Current RUN Comparator Threshold vs Temperature Voltages vs Temperature Operating Waveforms
0.6 1.300 VIN = 45V SWITCH 0.5 1.250 VOLTAGE RISING 20V/DIV 0.4 1.200 OUTPUT VOLTAGE 0.3 1.150 50mV/DIV FALLING 0.2 1.100 INDUCTOR SW = 0V CURRENT 100mA/DIV SWITCH LEAKAGE CURRENT (µA) 0.1 1.050 SW = 45V RUN COMPARATOR THRESHOLD (V) 0 1.000 –40 –10 20 50 80 110 –40 –10 20 50 80 110 V 3631 G18 IN = 36V 20µs/DIV TEMPERATURE (°C) TEMPERATURE (°C) VOUT = 5V ILOAD = 35mA 3631 G16 3631 G17 3631fe For more information www.linear.com/LTC3631 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Related Parts
Typical perForMance characTerisTics Peak Current Trip Threshold Peak Current Trip Threshold Quiescent Supply Current vs RISET vs Input Voltage vs Input Voltage
240 250 V 14 220 IN = 10V I 225 SET OPEN 200 12 200 SLEEP 180 175 10 160 150 140 8 125 RSET = 500k 120 Y CURRENT (µA) 6 100 100 SHUTDOWN 80 75 SUPPL I 4 SET = GND V IN 60 50 2 PEAK CURRENT TRIP THRESHOLD (mA) 40 PEAK CURRENT TRIP THRESHOLD (mA) 25 20 0 0 0 200 400 600 800 1000 1200 0 5 10 15 20 25 30 35 40 45 50 5 15 25 35 45 RISET (kΩ) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3631 G10 3631 G11 3631 G12
Quiescent Supply Current Switch On-Resistance Switch On-Resistance vs Temperature vs Input Voltage vs Temperature
14 4.5 5 VIN = 10V VIN = 10V 12 4.0 SLEEP 4 3.5 TOP 10 TOP 3.0 ANCE (Ω) 3 8 2.5 Y CURRENT (µA) 6 2.0 BOTTOM BOTTOM 2 SUPPL 4 1.5 SHUTDOWN V IN 1.0 SWITCH 0N-RESISTANCE (Ω) 1 2 SWITCH ON-RESIST 0.5 0 0 –40 –10 20 50 80 110 0 0 10 20 30 40 50 –40 –10 20 50 80 110 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3631 G13 3631 G15 3631 G14
Switch Leakage Current RUN Comparator Threshold vs Temperature Voltages vs Temperature Operating Waveforms
0.6 1.300 VIN = 45V SWITCH 0.5 1.250 VOLTAGE RISING 20V/DIV 0.4 1.200 OUTPUT VOLTAGE 0.3 1.150 50mV/DIV FALLING 0.2 1.100 INDUCTOR SW = 0V CURRENT 100mA/DIV SWITCH LEAKAGE CURRENT (µA) 0.1 1.050 SW = 45V RUN COMPARATOR THRESHOLD (V) 0 1.000 –40 –10 20 50 80 110 –40 –10 20 50 80 110 V 3631 G18 IN = 36V 20µs/DIV TEMPERATURE (°C) TEMPERATURE (°C) VOUT = 5V ILOAD = 35mA 3631 G16 3631 G17 3631fe For more information www.linear.com/LTC3631 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Related Parts
