LTC3526LEDC-TRPBF View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC3526LEDC-TRPBF Datasheet PDF : 16 Pages
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LTC3526L/LTC3526LB
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device reli-
ability and lifetime.
Note 2: The LTC3526LE/LTC3526LBE are guaranteed to meet performance
specifications from 0°C to 85°C. Specifications over –40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: Specification is guaranteed by design and not 100% tested in
production.
Note 4: Current measurements are made when the output is not switching.
Note 5: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may result in device degradation or failure.
Note 6: Failure to solder the exposed backside of the package to the PC
board ground plane will result in a thermal resistance much higher than
60°C/W.
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Load Current and VIN
for VOUT = 1.8V (LTC3526L)
100
1000
90
80
100
70
VIN = 1.0V
60
VIN = 1.2V
VIN = 1.5V
10
50
40
1
30
20
10
0
0.01
PLOSS AT VIN = 1.0V 0.1
PLOSS AT VIN = 1.2V
PLOSS AT VIN = 1.5V
0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
3526 G01
Efficiency vs Load Current and VIN
for VOUT = 3.3V (LTC3526L)
100
1000
90
80
100
70
VIN = 1.2V
VIN = 1.8V
60
VIN = 2.4V
10
50
VIN = 3.0V
40
1
30
20
10
0
0.01
PLOSS AT VIN = 1.2V
PLOSS AT VIN = 1.8V
0.1
PLOSS AT VIN = 2.4V
PLOSS AT VIN = 3.0V
0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
3526 G02
No-Load Input Current vs VIN
(LTC3526L)
100
90
VOUT = 5V
80
70
VOUT = 3.3V
60
VOUT = 2.5V
50
VOUT = 1.8V
40
30
20
10
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN (V)
3526 G04
Efficiency vs Load Current and VIN
for VOUT = 5V (LTC3526L)
100
1000
90
80
100
70
60
10
50
40
30
20
10
0
0.01
VIN = 1.2V
VIN = 2.4V
VIN = 3.6V
1
VIN = 4.2V
PLOSS AT VIN = 1.2V
PLOSS AT VIN = 2.4V
0.1
PLOSS AT VIN = 3.6V
PLOSS AT VIN = 4.2V
0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
3526 G03
Maximum Output Current vs VIN
400
VOUT = 3.3V
350
VOUT = 2.5V
300 VOUT = 1.8V
250
200
VOUT = 5V
150
100
50
L = 4.7μH
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN (V)
3526 G05
Minimum Load Resistance
During Start-Up vs VIN
10000
VOUT = 3.3V
1000
100
10
0.65 0.75 0.85 0.95 1.05 1.15
VIN (V)
3526 G06
3526lfb
3
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