LTC3108-1
ELECTRICAL CHARACTERISTICS
PARAMETER
Output Voltage
CONDITIONS
VS1 = VS2 = GND
VS1 = VAUX, VS2 = GND
VS1 = GND, VS2 = VAUX
VS1 = VS2 = VAUX
V
OUT
= 3.7V, V
OUT2_EN
= 0V
No Load, All Outputs Charged
0.5mA Load
For 0mA to 2mA Load
For VAUX from 2.5V to 5V
I
VLDO
= 2mA
VLDO = 0V
V
OUT
= 0V
VSTORE = 0V
Current into VAUX = 5mA
VSTORE = 5V
V
OUT2
= 0V, V
OUT2_EN
= 0V
l
l
l
l
l
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are for T
A
= 25°C (Note 2). VAUX = 5V, unless otherwise noted.
MIN
2.45
2.94
3.626
4.41
TYP
2.50
3.00
3.70
4.50
0.2
6
2.134
2.2
0.5
0.05
100
4
2.8
2.8
5
11
4.5
4.5
5.25
0.1
0.1
0.4
0.85
0.01
–7.5
–9
0.15
2.1
l
MAX
2.55
3.06
3.774
4.59
9
2.266
1
0.2
200
7
7
5.55
0.3
1.2
0.1
UNITS
V
V
V
V
μA
μA
V
%
%
mV
mA
mA
mA
V
μA
μA
V
μA
%
%
V
OUT
Quiescent Current
VAUX Quiescent Current
LDO Output Voltage
LDO Load Regulation
LDO Line Regulation
LDO Dropout Voltage
LDO Current Limit
V
OUT
Current Limit
VSTORE Current Limit
VAUX Clamp Voltage
VSTORE Leakage Current
V
OUT2
Leakage Current
VS1, VS2 Threshold Voltage
VS1, VS2 Input Current
PGD Threshold (Rising)
PGD Threshold (Falling)
PGD V
OL
PGD V
OH
PGD Pull-Up Resistance
V
OUT2_EN
Threshold Voltage
V
OUT2_EN
Pull-Down Resistance
V
OUT2
Turn-On Time
V
OUT2
Turn-Off Time
V
OUT2
Current Limit
V
OUT2
Current Limit Response Time
V
OUT2
P-Channel MOSFET On-Resistance
N-Channel MOSFET On-Resistance
VS1 = VS2 = 5V
Measured Relative to the V
OUT
Voltage
Measured Relative to the V
OUT
Voltage
Sink Current = 100μA
Source Current = 0
V
OUT2_EN
Rising
0.3
2.3
1.3
V
V
MΩ
V
MΩ
μs
μs
2.2
1
1
5
5
0.4
(Note 3)
V
OUT
= 3.7V
(Note 3)
V
OUT
= 3.7V (Note 3)
C2 = 5V (Note 3)
l
0.15
0.15
0.3
350
1.3
0.5
0.45
A
ns
Ω
Ω
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 LTC3108-1 is tested under pulsed load conditions such that
T
J
≈ T
A
. The LTC3108-1E is guaranteed to meet specifications from
0°C to 85°C junction temperature. Specifications over the –40°C to
125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LTC3108-1I is guaranteed over the full –40°C to 125°C operating junction
temperature range. Note that the maximum ambient temperature
is determined by specific operating conditions in conjunction with
board layout, the rated thermal package thermal resistance and other
environmental factors. The junction temperature (T
J
) is calculated from
the ambient temperature (T
A
) and power dissipation (P
D
) according to
the formula: T
J
= T
A
+ (P
D
•
θ
JA
°C/W), where
θ
JA
is the package thermal
impedance.
Note 3:
Specification is guaranteed by design and not 100% tested in
production.
Note 4:
Failure to solder the exposed backside of the package to the PC
board ground plane will result in a thermal resistance much higher than
43°C/W.
Note 5:
The absolute maximum rating is a DC rating. Under certain
conditions in the applications shown, the peak AC voltage on the C2 pin
may exceed ±8V. This behavior is normal and acceptable because the
current into the pin is limited by the impedance of the coupling capacitor.
31081fa
3
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
