LTC3109
ELECTRICAL CHARACTERISTICS The l ꢂenotes the speAifiAations whiAh apply over the full operating
junAtion temperature range, otherwise speAifiAations are for Tꢃ = 251C (ꢁote 2). VꢃUX = 5V unless otherwise noteꢂ.
PꢃRꢃMETER
COꢁDITIOꢁS
MIꢁ
TYP
30
6
MꢃX
UꢁITS
mV
Minimum Start-Up Voltage
No-Load Input Current
Using 1:100 Transformer Turns Ratio, VAUX = 0V
50
Using 1:100 Transformer Turns Ratios,
mA
V
= 30mV, V
= 0V, All Outputs Charged
IN
OUT2_EN
and in Regulation
l
Input Voltage Range
Output Voltage
Using 1:100 Transformer Turns Ratios
V
500
mV
STARTUP
l
l
l
l
VS1 = VS2 = GND
2.30
3.234
4.018
4.875
2.350
3.300
4.100
5.000
2.40
3.366
4.182
5.10
V
V
V
V
VS1 = VAUX, VS2 = GND
VS1 = GND, VS2 = VAUX
VS1 = VS2 = VAUX
VAUX Quiescent Current
VAUX Clamp Voltage
No Load, All Outputs Charged
Current Into VAUX = 5mA
7
10
μA
V
l
l
5.0
6
5.25
0.2
5.55
V
OUT
V
OUT
Quiescent Current
Current Limit
V
OUT
V
OUT
= 3.3V, V
= 0V
OUT2_EN
μA
mA
Ω
= 0V
15
26
N-Channel MOSFET On-Resistance
C2B = C2A = 5V (Note 3) Measured from V or
0.35
INA
SWA, V or SWB to GND
INB
l
LDO Output Voltage
LDO Load Regulation
LDO Line Regulation
LDO Dropout Voltage
LDO Current Limit
0.5mA Load On V
2.134
2.2
0.5
0.05
100
12
2.30
1
V
%
LDO
For 0mA to 2mA Load
For V from 2.5V to 5V
0.2
200
%
AUX
l
l
I
= 2mA
= 0V
mV
mA
μA
mA
nA
V
LDO
V
5
6
LDO
VSTORE Leakage Current
VSTORE Current Limit
VSTORE = 5V
VSTORE = 0V
0.1
15
0.3
26
l
l
V
Leakage Current
V
OUT2
= 0V, V = 0V
OUT2_EN
50
OUT2
VS1, VS2 Threshold Voltage
VS1, VS2 Input Current
0.4
0.85
1
1.2
50
V
S1
= V = 5V
nA
%
S2
PGOOD Threshold (Rising)
PGOOD Threshold (Falling)
Measured Relative to the V
Measured Relative to the V
Sink Current = 100μA
Source Current = 0
Voltage
Voltage
–7.5
–9
OUT
%
OUT
PGOOD V
PGOOD V
0.12
2.2
1
0.3
2.3
V
OL
OH
2.1
0.4
V
PGOOD Pull-Up Resistance
MΩ
V
l
V
V
V
V
V
V
V
V
Threshold Voltage
V
Rising
1.0
100
5
1.3
OUT2_EN
OUT2_EN
OUT2_EN
OUT2_EN
Threshold Hysteresis
Pull-Down Resistance
mV
MΩ
μs
μs
A
Turn-On Time
0.5
0.15
0.3
350
1.0
OUT2
OUT2
OUT2
OUT2
OUT2
Turn-Off Time
(Note 3)
= 3.3V
l
Current Limit
V
OUT
0.2
0.5
Current Limit Response Time
P-Channel MOSFET On-Resistance
(Note 3)
= 5V (Note 3)
ns
Ω
V
OUT
ꢁote ꢀ: 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.
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
ꢁote 2: The LTC3109 is tested under pulsed load conditions such that
T ≈ T . The LTC3109E is guaranteed to meet specifications from
J
A
3109fa
3
Linear Systems [ Linear Systems ]
