Datasheet LTC3526L-2, LTC3526LB-2 (Analog Devices) - 3

LTC3526L-2/LTC3526LB-2 elecTrical characTerisTics
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
Current measurements are made when the output is not switching. may cause permanent damage to the device. Exposure to any Absolute
Note 5:
This IC includes overtemperature protection that is intended Maximum Rating condition for extended periods may affect device to protect the device during momentary overload conditions. Junction reliability and lifetime. temperature will exceed 125°C when overtemperature protection is active.
Note 2:
The LTC3526LE-2/LTC3526LBE-2 are guaranteed to meet Continuous operation above the specified maximum operating junction performance specifications from 0°C to 85°C. Specifications over –40°C to temperature may result in device degradation or failure. 85°C operating temperature range are assured by design, characterization
Note 6:
Failure to solder the exposed backside of the package to the PC and correlation with statistical process controls. board ground plane will result in a thermal resistance much higher than
Note 3:
Specification is guaranteed by design and not 100% tested in 102°C/W. production. Typical perForMance characTerisTics
TA = 25°C, unless otherwise noted. Efficiency vs Load Current and VIN Efficiency vs Load Current and VIN No-Load Input Current vs VIN for VOUT = 1.8V (LTC3526L-2) for VOUT = 3.3V (LTC3526L-2) (LTC3526L-2)
100 1000 100 1000 100 90 90 90 VOUT = 5V 80 100 80 100 80 POWER LOSS (mW) POWER LOSS (mW) 70 V 70 IN = 0.9V 70 VOUT = 3.3V 60 VIN = 1.2V 10 60 10 VIN = 1.5V 60 VOUT = 2.5V 50 50 VIN = 1.2V (µA) V I IN 50 VOUT = 1.8V 40 1 40 IN = 1.8V 1 EFFICIENCY (%) EFFICIENCY (%) VIN = 2.4V 40 30 30 VIN = 3.0V 20 0.1 PLOSS AT VIN = 1.2V 30 PLOSS AT V 20 0.1 IN = 0.9V PLOSS AT VIN = 1.8V 10 PLOSS AT VIN = 1.2V 10 PLOSS AT VIN = 2.4V 20 PLOSS AT VIN = 1.5V PLOSS AT V 0 0.01 0 IN = 3.0V 0.01 10 0.01 0.1 1 10 100 1000 0.01 0.1 1 10 100 1000 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 LOAD CURRENT (mA) LOAD CURRENT (mA) VIN (V) 3526lb2 G01 3526lb2 G02 3526lb2 G03
Efficiency vs Load Current and VIN Minimum Load Resistance for VOUT = 5V (LTC3526L-2) Maximum Output Current vs VIN During Start-Up vs VIN
100 1000 400 10000 VOUT = 3.3V VOUT = 3.3V 90 350 VOUT = 2.5V 80 100 POWER LOSS (mW) 300 VOUT = 1.8V 70 1000 60 250 50 10 (mA) 200 V 40 I OUT OUT = 5V LOAD (Ω) EFFICIENCY (%) 150 100 30 1 100 20 10 50 L = 2.2µH 0 0.1 0 10 0.01 0.1 1 10 100 1000 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 0.65 0.75 0.85 0.95 1.05 1.15 LOAD CURRENT (mA) VIN (V) VIN (V) PLOSS AT V 3526lb2 G05 IN = 1.2V VIN = 1.2V 3526lb2 G06 PLOSS AT VIN = 2.4V VIN = 2.4V PLOSS AT VIN = 3.6V VIN = 3.6V PLOSS AT VIN = 4.2V VIN = 4.2V 3526lb2 G04 3526lb2fa 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