ltc3526lb-2 Linear Technology Corporation, ltc3526lb-2 Datasheet - Page 3

• Manufacturer Part Number: ltc3526lb-2
• Description: Ltc3526l-2/ltc3526lb-2 - 550ma 2mhz Synchronous Step-up Dc/dc Converters In 2mm ? 2mm Dfn
• Manufacturer: Linear Technology Corporation

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
reliability and lifetime.
Note 2: The LTC3526LE-2/LTC3526LBE-2 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.
Typical perForMance characTerisTics
100
100
90
80
70
60
40
30
20
10
50
90
80
70
60
50
40
30
20
10
0
0
0.01
0.01
Efficiency vs Load Current and V
for V
Efficiency vs Load Current and V
for V
PLOSS AT V
PLOSS AT V
PLOSS AT V
PLOSS AT V
OUT
OUT
0.1
0.1
= 1.8V (LTC3526L-2)
= 5V (LTC3526L-2)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
V
V
V
IN
IN
IN
IN
IN
IN
IN
1
1
= 0.9V
= 1.2V
= 1.5V
= 1.2V
= 2.4V
= 3.6V
= 4.2V
PLOSS AT V
PLOSS AT V
PLOSS AT V
10
10
100
100
IN
IN
IN
V
V
V
V
IN
IN
IN
IN
= 0.9V
= 1.2V
= 1.5V
3526lb2
3526lb2
= 1.2V
= 2.4V
= 3.6V
= 4.2V
IN
1000
G01
IN
1000
G04
100
10
1
0.1
0.01
1000
100
10
1
0.1
1000
100
90
80
70
60
50
40
30
20
10
0
0.01
400
350
300
250
200
150
100
Efficiency vs Load Current and V
for V
50
0
0.5
Maximum Output Current vs V
V
OUT
OUT
0.1
1.0
V
= 1.8V
OUT
= 3.3V (LTC3526L-2)
LOAD CURRENT (mA)
1.5
= 2.5V
1
V
2.0
OUT
V
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
102°C/W.
PLOSS AT V
PLOSS AT V
PLOSS AT V
PLOSS AT V
= 3.3V
IN
2.5
10
(V)
V
3.0
OUT
LTC3526L-2/LTC3526LB-2
100
V
V
V
V
IN
IN
IN
IN
IN
IN
IN
IN
= 5V
3.5
= 1.2V
= 1.8V
= 2.4V
= 3.0V
= 1.2V
= 1.8V
= 2.4V
= 3.0V
3526lb2
L = 2.2µH
T
4.0
3526lb2
A
IN
1000
G02
IN
= 25°C, unless otherwise noted.
1000
100
10
1
0.1
0.01
G05
4.5
10000
1000
100
100
10
80
70
50
40
10
90
60
30
20
0.65
0.5
Minimum Load Resistance
During Start-Up vs V
No-Load Input Current vs V
(LTC3526L-2)
1.0
0.75
1.5
V
OUT
0.85
= 5V
2.0
V
V
V
OUT
IN
IN
2.5
V
0.95
(V)
OUT
(V)
= 3.3V
V
IN
3.0
= 2.5V
OUT
1.05
= 1.8V
3.5
V
OUT
IN
3526lb2
= 3.3V
3526lb2fa
4.0
3526lb2
1.15

G06
G03
4.5