Datasheet LT3757, LT3757A (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Boost, Flyback, SEPIC and Inverting Controller |
| Pages / Page | 38 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| Revision | F |
| File Format / Size | PDF / 1.3 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Dynamic Quiescent Current
Model Line for this Datasheet
- LT3757AEDD#PBF LT3757AEDD#TRPBF LT3757AEMSE#PBF LT3757AEMSE#TRPBF LT3757AEMSE#WPBF LT3757AEMSE#WTRPBF LT3757AHMSE#PBF LT3757AHMSE#TRPBF LT3757AHMSE#WPBF LT3757AHMSE#WTRPBF LT3757AIDD#PBF LT3757AIDD#TRPBF LT3757AIMSE#PBF LT3757AIMSE#TRPBF LT3757AIMSE#WPBF LT3757AIMSE#WTRPBF LT3757AMPMSE#PBF LT3757AMPMSE#TRPBF LT3757EDD#PBF LT3757EDD#TRPBF LT3757EMSE#PBF LT3757EMSE#TRPBF LT3757HMSE#PBF LT3757HMSE#TRPBF LT3757IDD#PBF LT3757IDD#TRPBF LT3757IMSE#PBF LT3757IMSE#TRPBF LT3757MPMSE#PBF LT3757MPMSE#TRPBF
Text Version of Document
LT3757/LT3757A
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Dynamic Quiescent Current Normalized Switching Frequency vs Switching Frequency RT vs Switching Frequency vs FBX
35 1000 120 CL = 3300pF 30 100 25 80 20 (mA) (kΩ) 100 60 I Q 15 R T 40 10 NORMALIZED FREQUENCY (%) 20 5 0 10 0 0 100 200 300 400 500 600 700 800 900 1000 0 100 200 300 400 500 600 700 800 900 1000 –0.8 –0.4 0 0.4 0.8 1.2 1.6 SWITCHING FREQUENCY (KHz) SWITCHING FREQUENCY (KHz) FBX VOLTAGE (V) 3757 G04 3757 G05 3757 G06
Switching Frequency SENSE Current Limit Threshold SENSE Current Limit Threshold vs Temperature vs Temperature vs Duty Cycle
330 120 115 RT = 41.2K 320 115 110 310 300 110 105 290 SENSE THRESHOLD (mV) 105 SENSE THRESHOLD (mV) 100 SWITCHING FREQUENCY (kHz) 280 270 100 95 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) DUTY CYCLE (%) 3757 G07 3757 G08 3757 G09
SHDN/UVLO Threshold SHDN/UVLO Hysteresis Current vs Temperature SHDN/UVLO Current vs Voltage vs Temperature
1.28 40 2.4 1.26 30 2.2 1.24 SHDN/UVLO RISING (µA) 20 2.0 /UVLO 1.22 /UVLO VOLTAGE (V) /UVLO CURRENT (µA) I SHDN SHDN/UVLO FALLING SHDN SHDN 10 1.8 1.20 1.18 0 1.6 –75 –50 –25 0 25 50 75 100 125 150 0 10 20 30 40 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) SHDN/UVLO VOLTAGE (V) TEMPERATURE (°C) 3757 G10 3757 G12 3757 G11 Rev. F For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Dynamic Quiescent Current Normalized Switching Frequency vs Switching Frequency RT vs Switching Frequency vs FBX
35 1000 120 CL = 3300pF 30 100 25 80 20 (mA) (kΩ) 100 60 I Q 15 R T 40 10 NORMALIZED FREQUENCY (%) 20 5 0 10 0 0 100 200 300 400 500 600 700 800 900 1000 0 100 200 300 400 500 600 700 800 900 1000 –0.8 –0.4 0 0.4 0.8 1.2 1.6 SWITCHING FREQUENCY (KHz) SWITCHING FREQUENCY (KHz) FBX VOLTAGE (V) 3757 G04 3757 G05 3757 G06
Switching Frequency SENSE Current Limit Threshold SENSE Current Limit Threshold vs Temperature vs Temperature vs Duty Cycle
330 120 115 RT = 41.2K 320 115 110 310 300 110 105 290 SENSE THRESHOLD (mV) 105 SENSE THRESHOLD (mV) 100 SWITCHING FREQUENCY (kHz) 280 270 100 95 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) DUTY CYCLE (%) 3757 G07 3757 G08 3757 G09
SHDN/UVLO Threshold SHDN/UVLO Hysteresis Current vs Temperature SHDN/UVLO Current vs Voltage vs Temperature
1.28 40 2.4 1.26 30 2.2 1.24 SHDN/UVLO RISING (µA) 20 2.0 /UVLO 1.22 /UVLO VOLTAGE (V) /UVLO CURRENT (µA) I SHDN SHDN/UVLO FALLING SHDN SHDN 10 1.8 1.20 1.18 0 1.6 –75 –50 –25 0 25 50 75 100 125 150 0 10 20 30 40 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) SHDN/UVLO VOLTAGE (V) TEMPERATURE (°C) 3757 G10 3757 G12 3757 G11 Rev. F For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
