Datasheet LTC3026 (Analog Devices) - 5

LTC3026
Typical perForMance characTerisTics ADJ Voltage vs Temperature IN Shutdown Current BST Voltage vs Temperature
404 5.0 5.050 VIN = 1.5V 403 4.5 4.0 402 5.025 3.5 401 1mA 3.0 400 2.5 5.000 1.5A 399 2.0 3.5V BST VOLTAGE (V) 1.5 ADJUST VOLTAGE (mV) INPUT CURRENT (µA) 398 4.975 V 1.0 BST = 5V 397 VIN = 1.5V 0.5 2.5V VOUT =1.2V 1.2V 396 0 4.950 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3026 G04 3026 G05 3026 G06
Dropout Voltage vs Input Voltage Ripple Rejection Ripple Rejection
200 60 70 V 180 FB = 0.38V I 10kHz OUT =1.5A 60 160 50 1MHz 140 50 40 120 100kHz 40 100 30 80 30 DROPOUT (mV) 60 20 20 V –40°C RIPPLE REJECTION (dB) BST = 5V V RIPPLE REJECTION (dB) 40 BST = 5V V 25°C IN = 1.5V 10 VOUT =1.2V 10 VOUT =1.2V 20 85°C IOUT = 800mA I 125°C OUT = 800mA COUT = 10µF COUT = 10µF 0 0 0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 100 1000 10000 100000 1000000 1E+07 VIN (V) VIN (V) FREQUENCY (Hz) 3026 G07 3026 G08 3026 G09
Shutdown Threshold Output Current Limit BST to OUT Headroom Voltage
1200 5.0 2.22 VOUT = 0V 2.20 4.5 TA = 25°C RISE 2.18 RISE 4.0 FALL 2.16 900 FALL RISE 3.5 (V) 2.14 FALL (A) OUT 3.0 2.12 I OUT – V THRESHOLD (mV) 2.10 2.5 600 V BST CURRENT LIMIT 2.08 V SHDN 2.0 –40°C 2.06 THERMAL LIMIT 25°C 1.5 2.04 125°C 300 1.0 2.02 1 2 3 4 5 6 1.0 1.5 2.0 2.5 3.0 3.5 –50 –25 0 25 50 75 100 125 VIN (V) VIN (V) TEMPERATURE (°C) 3026 G10 3026 G11 3026 G12 3026ff 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Description Revision History Typical Application Related Parts