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| LTC3459_07 Datasheet, PDF (3/12 Pages) Linear Technology – 10V Micropower Synchronous Boost Converter | |||
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LTC3459
ELECTRICAL CHARACTERISTICS The l denotes the speciï¬cations which apply over the full operating
temperature range, otherwise speciï¬cations are at TA = 25°C. VIN = 3.3V, VOUT = 5V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIN
Input Voltage Range
VIN Quiescent Current
VIN Shutdown Current
VOUT
SHDN = VCC
SHDN = GND
l 1.5
5.5
V
10
20
μA
0.1
1
μA
Programmable Voltage Range
VOUT Quiescent Supply Current
VOUT Shutdown Current
Reference
SHDN = VCC
SHDN = GND
l 2.5
10
V
2
4
μA
0.1
1
μA
Feedback Voltage
FB Input Leakage Current
VIN = 3.3V, VOUT = 7.5V
Measured on FB
l 1.19 1.22 1.25
V
10
50
nA
Converter Performance
Peak Switch Current (VIN = 3.3V)
tOFF Timer (VIN = 3.3V, VOUT = 5V)
Zero Current Comparator Threshold
L = 22μH
Varies by 1/(VOUT â VIN)
L = 22μH
l 60
75
90
mA
225
400
550
ns
0
mA
Main NMOS Switch
On-Resistance
Leakage Current
VOUT = 5V
VSWITCH = 10V, VOUT = 10V
2.8
Ω
0.01
1
μA
Main PMOS Switch
On-Resistance
Leakage Current
Logic Inputs
SHDN Threshold (Rising Edge)
SHDN Hysteresis
SHDN Input Leakage Current
VOUT = 5V
VIN = 5V, VSWITCH = 5V, VOUT = 0V
SHDN = 3.3V
4.2
Ω
0.02
2
μA
0.3
1
V
80
mV
0
50
nA
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 LTC3459E is guaranteed to meet performance speciï¬cations
from 0°C to 85°C. Speciï¬cations over the â40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
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 speciï¬ed maximum operating junction
temperature may impair device reliability.
3459fc
3
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