Datasheet LT3002 (Analog Devices) - 4

LT3002
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Switching Frequency Output Load and Line Regulation Output Temperature Variation vs Load Current
5.20 5.3 500 FRONT PAGE APPLICATION FRONT PAGE APPLICATION 5.15 VIN = 12V 5.2 IOUT = 1A 400 5.10 5.1 5.05 R 300 TC = 115k 5.00 5.0 RTC = OPEN 200 4.95 4.9 FREQUENCY (kHz) OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 4.90 100 VIN = 5V 4.8 VIN = 5V 4.85 V V IN = 12V IN = 12V V V IN = 24V IN = 24V 4.80 4.7 0 0 0.5 1.0 1.5 2.0 2.5 3.0 –50 –25 0 25 50 75 100 125 150 0 0.5 1.0 1.5 2.0 2.5 3.0 LOAD CURRENT (A) TEMPERATURE (°C) LOAD CURRENT (A) 3002 G01 3002 G02 3002 G03
Boundary Mode Waveforms Discontinuous Mode Waveforms Burst Mode Waveforms
VSW V 20V/DIV SW 20V/DIV VSW 20V/DIV V V OUT OUT VOUT 50mV/DIV 50mV/DIV 50mV/DIV 2µs/DIV 3002 G04 2µs/DIV 3002 G05 20µs/DIV 3002 G06 FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN = 12V VIN = 12V VIN = 12V IOUT = 2A IOUT = 0.5A IOUT = 10mA
EN/UVLO Enable Threshold RREF Regulation Voltage Switch Current Limit
1.240 1.010 5 1.235 1.008 RISING 1.006 4 MAXIMUM CURRENT LIMIT 1.230 1.004 1.225 (V) 1.002 3 (V) 1.220 1.000 (A) FALLING V RREF I SW V EN/UVLO 1.215 0.998 2 0.996 1.210 0.994 1 MINIMUM CURRENT LIMIT 1.205 0.992 1.200 0.990 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3002 G09 3002 G07 3002 G08 Rev. 0 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Applications Information Package Description