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参数资料
| 型号： | LTC3105EMS#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/18页 |
| 文件大小： | 0K |
| 描述： | IC CONV DC/DC 400MA HIEFF 12MSOP |
| 标准包装： | 2,500 |
| 应用： | 转换器，能量收集 |
| 输入电压： | 0.23 V ~ 5 V |
| 输出数： | 1 |
| 输出电压： | 1.5 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-TSSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 12-MSOP |
| 包装： | 带卷 (TR) |
LTC3105
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T A = 25°C (Note 2). V AUX = V OUT = 3.3V, V LDO = 2.2V, V IN = 0.6V, unless
otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Step-Up Converter
Input Operating Voltage
l
0.225
5
V
Input Start-Up Voltage
Output Voltage Adjust Range
(Note 5)
T J = 0°C to 85°C (Note 5)
l
l
1.5
0.25
0.4
0.36
5.25
V
V
V
Feedback Voltage (FB Pin)
V OUT I Q in Operation
V OUT I Q in Shutdown
MPPC Pin Output Current
V FB = 1.10V
SHDN = 0V
V MPPC = 0.6V
l
0.984
9.72
1.004
24
10
10
1.024
10.28
V
μA
μA
μA
SHDN Input Logic High Voltage
SHDN Input Logic Low Voltage
l
l
1.1
0.3
V
V
N-Channel SW Pin Leakage Current
P-Channel SW Pin Leakage Current
N-Channel On-Resistance: SW to GND
P-Channel On-Resistance: SW to V OUT
V IN = V SW = 5V, V SHDN = 0V
V IN = V SW = 0V, V OUT = V AUX = 5.25V
1
1
0.5
0.5
10
10
μA
μA
Ω
Ω
Peak Current Limit
Valley Current Limit
V FB = 0.90V, V MPPC = 0.4V (Note 3)
V FB = 0.90V, V MPPC = 0.4V (Note 3)
0.4
0.275
0.5
0.35
A
A
PGOOD Threshold (% of Feedback Voltage)
V OUT Falling
85
90
95
%
LDO Regulator
LDO Output Adjust Range
External Feedback Network, V AUX > V LDO
l
1.4
5
V
LDO Output Voltage
Feedback Voltage (FBLDO Pin)
V FBLDO = 0V
External Feedback Network
l
l
2.148
0.984
2.2
1.004
2.236
1.024
V
V
Load Regulation
Line Regulation
Dropout Voltage
I LDO = 1mA to 6mA
V AUX = 2.5V to 5V
I LDO = 6mA, V OUT = V AUX = 2.2V
0.40
0.15
105
%
%
mV
LDO Current Limit
LDO Reverse-Blocking Leakage Current
V LDO 0.5V Below Regulation Voltage
V IN = V AUX = V OUT = 0V, V SHDN = 0V
l
6
12
1
mA
μA
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 LTC3105 is tested under pulsed load conditions such that
T J ≈ T A . The LTC3105E is guaranteed to meet specifications from
0°C to 85°C junction temperature. Specifications over the –40°C to 85°C
operating junction temperature range are assured by design, character-
ization and correlation with statistical process controls. Note that the
maximum ambient temperature consistent with these specifications is
determined by specific operating conditions in conjunction with board
layout, the rated package thermal impedance and other environmental
factors.
Note 3: Current measurements are performed when the LTC3105 is not
switching. The current limit values measured in operation will be somewhat
higher due to the propagation delay of the comparators.
Note 4: This IC includes over temperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
Note 5: The LTC3105 has been optimized for use with high impedance
power sources such as photovoltaic cells and thermoelectric generators.
The input start-up voltage is measured using an input voltage source with
a series resistance of approximately 200mΩ and MPPC enabled. Use of the
LTC3105 with lower resistance voltage sources or with MPPC disabled may
result in a higher input start-up voltage.
3105fa
3
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