LTC3529 Linear Dimensions Semiconductor, LTC3529 Datasheet - Page 3

• Manufacturer Part Number: LTC3529
• Description: 1.5MHz Step-Up dc
• Manufacturer: Linear Dimensions Semiconductor

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ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
PARAMETER
FAULT Delay Time
FAULT Output Low Voltage
FAULT Leakage Current
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 LTC3529 is guaranteed to meet performance specifi cations
from 0°C to 85°C. Specifi cations over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
TYPICAL PERFORMANCE CHARACTERISTICS
200mA/DIV
5V/DIV
5V/DIV
SHDN
V
OUT
I
L
V
V
C
L = 2.2μH
Soft-Start Waveforms
IN
OUT
OUT
= 3.6V
= 5V
= 10μF
100
90
80
70
60
50
40
30
20
10
0
1
C
INDUCTOR = 4.7μH,
COOPER BUSSMANN SD25-4R7
2ms/DIV
2 Alkaline Cells to 5V Effi ciency
OUT
= 10μF
EFFICIENCY
LOAD CURRENT (mA)
POWER LOSS
10
3529 G03
V
IN
V
V
IN
IN
= 3V
100
= 1.8V
CONDITIONS
I
V
= 1.8V
FAULT
200mV/DIV
500mA/DIV
FAULT
V
IN
= 3V
V
= 5mA
= 5.5V
OUT
A
3529 G01
I
L
= 25°C. V
1000
Load Transient Response
V
V
C
L = 2.2μH
IN
OUT
OUT
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
= 3.6V
The
= 5V
= 10μF
l
IN
denotes the specifi cations which apply over the full operating
= 3.6V, V
200μs/DIV
Note 3: 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 specifi ed maximum operating junction
temperature may impair device reliability.
Note 4: Current measurements are performed when the LTC3529 is not
switching. The current limit values in operation will be somewhat higher
due to the propagation delay of the comparators.
Note 5: Specifi cation is guaranteed by design and not 100% tested in
production.
OUT
= 5V unless otherwise noted.
100
90
80
70
60
50
40
30
20
10
0
1
C
INDUCTOR = 4.7μH,
COOPER BUSSMANN SD25-4R7
Li-Ion Battery to 5V Effi ciency
OUT
3529 G04
= 10μF
V
V
V
IN
IN
IN
= 4.1V
= 3.6V
= 3V
LOAD CURRENT (mA)
10
5mV/DIV
V
MIN
POWER LOSS
12
OUT
EFFICIENCY
V
C
L = 4.7μH
I
V
LOAD
IN
OUT
OUT
= 3.6V
100
= 10μF
= 200mA
Ripple
TYP
22
60
3529 G02
1μs/DIV
1000
LTC3529
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
MAX
35
10
UNITS
3529fa
3529 G05
3
mV
ms
μA