LTC3109
ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum Start-Up Voltage
No-Load Input Current
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.
CONDITIONS
Using 1:100 Transformer Turns Ratio, VAUX = 0V
Using 1:100 Transformer Turns Ratios,
V
IN
= 30mV, V
OUT2_EN
= 0V, All Outputs Charged
and in Regulation
Using 1:100 Transformer Turns Ratios
VS1 = VS2 = GND
VS1 = VAUX, VS2 = GND
VS1 = GND, VS2 = VAUX
VS1 = VS2 = VAUX
No Load, All Outputs Charged
Current Into VAUX = 5mA
V
OUT
= 3.3V, V
OUT2_EN
= 0V
V
OUT
= 0V
C2B = C2A = 5V (Note 3) Measured from V
INA
or
SWA, V
INB
or SWB to GND
0.5mA Load On V
LDO
For 0mA to 2mA Load
For V
AUX
from 2.5V to 5V
I
LDO
= 2mA
V
LDO
= 0V
VSTORE = 5V
VSTORE = 0V
V
OUT2
= 0V, V
OUT2_EN
= 0V
l
l
l
l
l
l
l
l
l
l
l
l
MIN
TYP
±30
6
MAX
±50
UNITS
mV
mA
Input Voltage Range
Output Voltage
V
STARTUP
2.30
3.234
4.018
4.875
5.0
6
2.350
3.300
4.100
5.000
7
5.25
0.2
15
0.35
2.134
2.2
0.5
0.05
100
5
6
0.4
12
0.1
15
50
0.85
1
–7.5
–9
0.12
2.1
2.2
1
1.0
100
5
0.5
±500
2.40
3.366
4.182
5.10
10
5.55
26
mV
V
V
V
V
μA
V
μA
mA
Ω
VAUX Quiescent Current
VAUX Clamp Voltage
V
OUT
Quiescent Current
V
OUT
Current Limit
N-Channel MOSFET On-Resistance
LDO Output Voltage
LDO Load Regulation
LDO Line Regulation
LDO Dropout Voltage
LDO Current Limit
VSTORE Leakage Current
VSTORE Current Limit
V
OUT2
Leakage Current
VS1, VS2 Threshold Voltage
VS1, VS2 Input Current
PGOOD Threshold (Rising)
PGOOD Threshold (Falling)
PGOOD V
OL
PGOOD V
OH
PGOOD Pull-Up Resistance
V
OUT2_EN
Threshold Voltage
V
OUT2_EN
Threshold Hysteresis
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
2.30
1
0.2
200
0.3
26
1.2
50
V
%
%
mV
mA
μA
mA
nA
V
nA
%
%
V
S1
= V
S2
= 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
l
0.3
2.3
1.3
V
V
MΩ
V
mV
MΩ
μs
μs
0.4
(Note 3)
V
OUT
= 3.3V
(Note 3)
V
OUT
= 5V (Note 3)
l
0.15
0.2
0.3
350
1.0
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
LTC3109I 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
0.5
A
ns
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 LTC3109 is tested under pulsed load conditions such that
T
J
≈ T
A
. The LTC3109E is guaranteed to meet specifications from
3109fa
3
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
