Datasheet LT3990, LT3990-3.3, LT3990-5 (Analog Devices) - 4

LT3990/LT3990-3.3/LT3990-5
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency, VOUT = 3.3V Efficiency, VOUT = 5V LT3990 Feedback Voltage
90 90 1.220 80 VIN = 12V V 80 IN = 24V VIN = 24V 1.215 70 VIN = 12V 70 60 1.210 VIN = 36V 60 VIN = 36V 50 V VIN = 48V IN = 48V 50 1.205 EFFICIENCY (%) 40 EFFICIENCY (%) 40 30 FEEDBACK VOLTAGE (V) FRONT PAGE APPLICATION V 1.200 20 OUT = 3.3V 30 R1 = 1M R2 = 576k FRONT PAGE APPLICATION 10 20 1.195 0.01 0.1 1 10 100 0.01 0.1 1 10 100 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT (mA) LOAD CURRENT (mA) TEMPERATURE (°C) 3990 G01 3990 G02 3990 G03
LT3990-3.3 Output Voltage LT3990-5 Output Voltage No-Load Supply Current
3.32 5.04 4.0 FRONT PAGE APPLICATION VOUT = 3.3V 3.31 5.02 R1 = 1M 3.5 R2 = 576k LT3990-3.3 3.30 5.00 3.0 3.29 4.98 2.5 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) SUPPLY LEVEL (µA) 3.28 4.96 2.0 3.27 4.94 1.5 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 5 15 25 35 45 55 TEMPERATURE (°C) TEMPERATURE (°C) INPUT VOLTAGE (V) 3990 G04 3990 G05 3990 G06
No-Load Supply Current Maximum Load Current Maximum Load Current
15 650 650 FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN = 12V VOUT = 3.3V VOUT = 5V 600 12 VOUT = 3.3V 600 R1 = 1M TYPICAL R2 = 576k TYPICAL 550 550 9 MINIMUM 500 500 MINIMUM 6 450 450 SUPPLY CURRENT (µA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3 400 400 0 350 350 –50 –25 0 25 50 75 100 125 150 5 15 25 35 45 55 5 15 25 35 45 55 TEMPERATURE (°C) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3990 G07 3990 G08 3990 G09 3990fa 4 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