Datasheet LTC3025-1, LTC3025-2, LTC3025-3, LTC3025-4 (Analog Devices) - 5

LTC3025-1/LTC3025-2/ LTC3025-3/LTC3025-4
Typical perForMance characTerisTics (TA = 25°C unless otherwise noted) VIN to VOUT Dropout Voltage Operating BIAS Current vs IOUT vs Output Current BIAS No Load Operating Current
120 500 V 80 BIAS = 2.8V VIN = 1.5V VIN = 1.4V 450 70 VOUT = 1.2V 100 TA = 125°C 400 60 350 80 TA = 25°C 125°C 300 50 TAGE (mV) 125°C –40°C 25°C 60 (µA) 250 (µA) 40 25°C I BIAS –40°C 200 I BIAS 30 40 TA = –40°C 150 DROPOUT VOL 20 100 20 50 10 0 0 0 0 50 100 150 200 250 300 350 400 450 500 0.01 0.1 1 10 100 1000 2.5 3 3.5 4 4.5 5 5.5 IOUT (mA) IOUT (mA) VBIAS (V) 30251234 G01 30251234 G02 30251234 G03
VIN No Load Operating Current VIN Shutdown Current Adjust Voltage vs Temperature
14 405 V 7 BIAS = 5V V V V BIAS = 5V 404 BIAS = 3.6V 12 OUT = 0.8V V 6 IN = 1.5V 403 IOUT = 10µA 10 125°C 5 402 –40°C 401 8 85°C 4 (µA) (µA) 400 I IN 6 I IN 25°C 3 399 –40°C 25°C 4 2 398 ADJUST VOLTAGE (mV) 85°C 397 2 1 396 0 0 395 0.5 1.5 2.5 3.5 4.5 5.5 0.5 1.5 2.5 3.5 4.5 5.5 –50 –25 0 25 50 75 100 125 VIN (V) VIN (V) TEMPERATURE (°C) 30251234 G04 30251234 G05 30251234 G06
Burst Mode DC/DC Buck Ripple SHDN Threshold vs Temperature Current Limit vs VIN Voltage Rejection
1000 1600 900 1400 VIN 800 AC 1200 100mV/DIV 700 VBIAS = 5V 1000 600 500 VBIAS = 2.5V 800 VOUT THRESHOLD (mV) 400 AC 600 10mV/DIV 300 CURRENT LIMIT (mA) SHDN 400 200 V 10µs/DIV 30251234 G09 100 200 IN = 1.8V VOUT = 1.5V 0 0 COUT = 1µF –50 –25 0 25 50 75 100 125 0 1 2 3 4 5 6 IOUT = 50mA TEMPERATURE (°C) VIN (V) 30251234 G07 30251234 G08 30251234ff 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Revision History Typical Application Related Parts