Datasheet LT3743 (Analog Devices) - 6

LT3743
TYPICAL PERFORMANCE CHARACTERISTICS Internal UVLO CBOOT-SW UVLO Voltage VCC_INT UVLO
5.0 3.00 4.00 2.75 3.75 4.5 2.50 3.50 (V) 4.0 2.25 3.25 V IN UVLO (V) VOLTAGE (V) 2.00 3.00 3.5 1.75 2.75 3.0 1.50 2.50 –50 –15 20 55 90 125 –50 –15 20 55 90 125 –50 –15 20 55 90 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3743 G10 3743 G11 3743 G12
VCC_INT Load Reg at 12V Regulated Current vs VFB Open-LED Threshold
6.0 150 1.5 100 5.6 1.4 50 5.2 1.3 (V) 0 V CC_INT 4.8 1.2 –50 4.4 REGULATED CURRENT (%) OPEN-LED THRESHOLD (V) 1.1 –100 4.0 –150 1.0 0 10 20 30 40 50 60 800 900 1000 1100 1200 1300 –50 –15 20 55 90 125 ILOAD (mA) VFB (mV) TEMPERATURE (°C) 3743 G13 3743 G14 3743 G15
Open-LED Timeout Regulated Sense Voltage Common Mode Lockout
19 60 2.5 MEASURED VIN – VOUT 50 17 2.0 VIN = 6V – (mV) 40 15 1.5 VIN = 36V SENSE 30 13 + – V 1.0 20 CM LOCKOUT (V) OPEN-LED TIMEOUT (µs) V SENSE 11 0.5 10 9 0 0 –50 –15 20 55 90 125 0 0.5 1.0 1.5 2.0 –50 –15 20 55 90 125 TEMPERATURE (°C) VCTRL (V) TEMPERATURE (°C) 3743 G16 3743 G17 3743 G18 3743fe 6 For more information www.linear.com/LT3743 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts