LTC3109_15 Datasheet, PDF (3/24 Pages) Linear Technology – Auto-Polarity, Ultralow Voltage Step-Up Converter and Power Manager

LTC3109
Electrical Characteristics 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.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Minimum Start-Up Voltage
Using 1:100 Transformer Turns Ratio, VAUX = 0V
±30
±50
mV
No-Load Input Current
Using 1:100 Transformer Turns Ratios,
V_IN = 30mV, V_{OUT2_EN} = 0V, All Outputs Charged
and in Regulation
6
mA
Input Voltage Range
Output Voltage
Using 1:100 Transformer Turns Ratios
VS1 = VS2 = GND
VS1 = VAUX, VS2 = GND
VS1 = GND, VS2 = VAUX
VS1 = VS2 = VAUX
l V_STARTUP
±500
mV
l 2.30 2.350 2.40
V
l 3.234 3.300 3.366
V
l 4.018 4.100 4.182
V
l 4.875 5.000 5.10
V
VAUX Quiescent Current
No Load, All Outputs Charged
7
10
µA
VAUX Clamp Voltage
Current Into VAUX = 5mA
l 5.0
5.25
5.55
V
V_OUT Quiescent Current
V_OUT Current Limit
N-Channel MOSFET On-Resistance
LDO Output Voltage
LDO Load Regulation
V_OUT = 3.3V, V_{OUT2_EN} = 0V
0.2
µA
V_OUT = 0V
l
6
15
26
mA
C2B = C2A = 5V (Note 3) Measured from V_INA or
0.35
Ω
SWA, V_INB or SWB to GND
0.5mA Load On V_LDO
l 2.134
2.2
2.30
V
For 0mA to 2mA Load
0.5
1
%
LDO Line Regulation
LDO Dropout Voltage
LDO Current Limit
VSTORE Leakage Current
For V_AUX from 2.5V to 5V
I_LDO = 2mA
V_LDO = 0V
VSTORE = 5V
0.05
0.2
%
l
100
200
mV
l
5
12
mA
0.1
0.3
µA
VSTORE Current Limit
VSTORE = 0V
l
6
15
26
mA
V_OUT2 Leakage Current
VS1, VS2 Threshold Voltage
V_OUT2 = 0V, V_{OUT2_EN} = 0V
50
nA
l 0.4
0.85
1.2
V
VS1, VS2 Input Current
PGOOD Threshold (Rising)
PGOOD Threshold (Falling)
PGOOD V_OL
PGOOD V_OH
PGOOD Pull-Up Resistance
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
1
50
nA
–7.5
%
–9
%
0.12
0.3
V
2.1
2.2
2.3
V
1
MΩ
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
V_{OUT2_EN} Rising
(Note 3)
V_OUT = 3.3V
(Note 3)
V_OUT = 5V (Note 3)
l 0.4
1.0
1.3
V
100
mV
5
MΩ
0.5
µs
0.15
µs
l 0.2
0.3
0.5
A
350
ns
1.0
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
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
3109fb
For more information www.linear.com/LTC3109
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