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参数资料
| 型号： | LTC3109IGN#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.026 A SWITCHING REGULATOR, PDSO20 |
| 封装： | 0.150 INCH, LEAD FREE, PLASTIC, SSOP-20 |
| 文件页数： | 18/24页 |
| 文件大小： | 329K |
| 代理商： | LTC3109IGN#TRPBF |
LTC3109
3109f
elecTrical characTerisTics
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
TJ ≈ TA. The LTC3109E is guaranteed to meet specifications from
The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are for TA = 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,
VIN = 30mV, VOUT2_EN = 0V, All Outputs Charged
and in Regulation
6
mA
Input Voltage Range
Using 1:100 Transformer Turns Ratios
l
VSTARTUP
±500
mV
Output Voltage
VS1 = VS2 = GND
VS1 = VAUX, VS2 = GND
VS1 = GND, VS2 = VAUX
VS1 = VS2 = VAUX
l
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
VAUX Quiescent Current
No Load, All Outputs Charged
7
10
A
VAUX Clamp Voltage
Current Into VAUX = 5mA
l
5.0
5.25
5.55
V
VOUT Quiescent Current
VOUT = 3.3V, VOUT2_EN = 0V
0.2
A
VOUT Current Limit
VOUT = 0V
l
6
15
26
mA
N-Channel MOSFET On-Resistance
C2B = C2A = 5V (Note 3) Measured from VINA or
SWA, VINB or SWB to GND
0.35
Ω
LDO Output Voltage
0.5mA Load On VLDO
l
2.134
2.2
2.30
V
LDO Load Regulation
For 0mA to 2mA Load
0.5
1
%
LDO Line Regulation
For VAUX from 2.5V to 5V
0.05
0.2
%
LDO Dropout Voltage
ILDO = 2mA
l
100
200
mV
LDO Current Limit
VLDO = 0V
l
5
12
mA
VSTORE Leakage Current
VSTORE = 5V
0.1
0.3
A
VSTORE Current Limit
VSTORE = 0V
l
6
15
26
mA
VOUT2 Leakage Current
VOUT2 = 0V, VOUT2_EN = 0V
50
nA
VS1, VS2 Threshold Voltage
l
0.4
0.85
1.2
V
VS1, VS2 Input Current
VS1 = VS2 = 5V
1
50
nA
PGOOD Threshold (Rising)
Measured Relative to the VOUT Voltage
–7.5
%
PGOOD Threshold (Falling)
Measured Relative to the VOUT Voltage
–9
%
PGOOD VOL
Sink Current = 100A
0.12
0.3
V
PGOOD VOH
Source Current = 0
2.1
2.2
2.3
V
PGOOD Pull-Up Resistance
1
MΩ
VOUT2_EN Threshold Voltage
VOUT2_EN Rising
l
0.4
1.0
1.3
V
VOUT2_EN Threshold Hysteresis
100
mV
VOUT2_EN Pull-Down Resistance
5
MΩ
VOUT2 Turn-On Time
0.5
s
VOUT2 Turn-Off Time
(Note 3)
0.15
s
VOUT2 Current Limit
VOUT = 3.3V
l
0.2
0.3
0.5
A
VOUT2 Current Limit Response Time
(Note 3)
350
ns
VOUT2 P-Channel MOSFET On-Resistance
VOUT = 5V (Note 3)
1.0
Ω
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
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