LT1673 LINER [Linear Technology], LT1673 Datasheet - Page 3

• Manufacturer Part Number: LT1673
• Description: Auto-Polarity, Ultralow Voltage Step-Up Converter
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
junction temperature range, otherwise specifi cations are for T
PARAMETER
Minimum Start-Up Voltage
No-Load Input Current
Input Voltage Range
Output Voltage
VAUX Quiescent Current
VAUX Clamp Voltage
V
V
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
VS1, VS2 Threshold Voltage
VS1, VS2 Input Current
PGOOD Threshold (Rising)
PGOOD Threshold (Falling)
PGOOD V
PGOOD V
PGOOD Pull-Up Resistance
V
V
V
V
V
V
V
V
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
OUT
OUT
OUT2
OUT2_EN
OUT2_EN
OUT2_EN
OUT2
OUT2
OUT2
OUT2
OUT2
≈ T
Quiescent Current
Current Limit
A
Leakage Current
Turn-On Time
Turn-Off Time
Current Limit
Current Limit Response Time
P-Channel MOSFET On-Resistance
. The LTC3109E is guaranteed to meet specifi cations from
OL
OH
Threshold Voltage
Threshold Hysteresis
Pull-Down Resistance
CONDITIONS
Using 1:100 Transformer Turns Ratio, VAUX = 0V
Using 1:100 Transformer Turns Ratios,
V
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
V
C2B = C2A = 5V (Note 3) Measured from V
SWA, V
0.5mA Load On V
For 0mA to 2mA Load
For V
I
V
VSTORE = 5V
VSTORE = 0V
V
V
Measured Relative to the V
Measured Relative to the V
Sink Current = 100μA
Source Current = 0
V
(Note 3)
V
(Note 3)
V
LDO
IN
OUT
OUT
LDO
OUT2
S1
OUT2_EN
OUT
OUT
= 30mV, V
= V
= 2mA
AUX
= 3.3V, V
= 0V
= 0V
= 3.3V
= 5V (Note 3)
= 0V, V
INB
S2
from 2.5V to 5V
Rising
= 5V
or SWB to GND
The
OUT2_EN
OUT2_EN
OUT2_EN
A
LDO
l
= 25°C (Note 2). VAUX = 5V unless otherwise noted.
denotes the specifi cations which apply over the full operating
= 0V
= 0V, All Outputs Charged
= 0V
0°C to 85°C junction temperature. Specifi cations 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 specifi c operating conditions in conjunction with
OUT
OUT
Voltage
Voltage
INA
or
l
l
l
l
l
l
l
l
l
l
l
l
l
l
V
STARTUP
3.234
4.018
4.875
2.134
2.30
MIN
5.0
0.4
2.1
0.4
0.2
6
5
6
2.350
3.300
4.100
5.000
5.25
0.35
0.05
0.85
–7.5
0.12
0.15
TYP
±30
100
100
350
0.2
2.2
0.5
0.1
2.2
1.0
0.5
0.3
1.0
15
12
15
50
–9
6
7
1
1
5
LTC3109
3.366
4.182
±500
MAX
2.40
5.10
5.55
2.30
±50
200
0.2
0.3
1.2
0.3
2.3
1.3
0.5
10
26
26
50
1
UNITS
3109fa
3
MΩ
MΩ
mV
mA
mV
mA
mV
mA
mA
mV
μA
μA
μA
nA
nA
μs
μs
ns
%
%
%
%
Ω
Ω
V
V
V
V
V
V
V
V
V
V
A