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参数资料
| 型号： | LTC3105EMS#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/18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
400mA Step-Up DC/DC
Converter with Maximum Power
Point Control and 250mV Start-Up
Low Start-Up Voltage: 250mV
Maximum Power Point Control
Wide V IN Range: 225mV to 5V
Auxiliary 6mA LDO Regulator
Burst Mode ? Operation: I Q = 24μA
Output Disconnect and Inrush Current Limiting
V IN > V OUT Operation
Antiringing Control
Soft Start
Automatic Power Adjust
Power Good Indicator
10-Lead 3mm × 3mm × 0.75mm DFN and 12-Lead
Solar Powered Battery/Supercapacitor Chargers
Energy Harvesting
Remote Industrial Sensors
Low Power Wireless Transmitters
Cell Phone, MP3, PMP and GPS Accessory Chargers
FEATURES
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MSOP Packages
APPLICATIONS
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TYPICAL APPLICATION
Single Photovoltaic Cell Li-Ion Trickle Charger
DESCRIPTION
The LTC ? 3105 is a high efficiency step-up DC/DC converter
that can operate from input voltages as low as 225mV. A
250mV start-up capability and integrated maximum power
point controller (MPPC) enable operation directly from low
voltage, high impedance alternative power sources such as
photovoltaic cells, TEGs (thermoelectric generators) and
fuel cells. A user programmable MPPC set point maximizes
the energy that can be extracted from any power source.
Burst Mode operation, with a proprietary self adjusting
peak current, optimizes converter efficiency and output
voltage ripple over all operating conditions.
The AUX powered 6mA LDO provides a regulated rail for
external microcontrollers and sensors while the main
output is charging. In shutdown, I Q is reduced to 10μA
and integrated thermal shutdown offers protection from
overtemperature faults. The LTC3105 is offered in 10-lead
3mm × 3mm × 0.75mm DFN and 12-lead MSOP packages.
L , LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
Output Current vs Input Voltage
10μH
80
70
MPPC DISABLED
225mV TO 5V
+
PHOTOVOLTAIC
CELL –
10μF
V IN SW
V OUT
LTC3105
FB
MPPC PGOOD
1020k
332k
V OUT
4.1V
Li-Ion
60
50
40
30
V OUT = 4.2V
V OUT = 3.3V
V OUT = 5V
OFF ON
40.2k
SHDN
AUX
LDO
FBLDO
2.2V
10μF
20
10
1μF
GND
4.7μF
0
0.2
0.3
0.4
0.5 0.6 0.7 0.8
0.9
1.0
3105 TA01a
INPUT VOLTAGE (V)
3105 TA01b
3105fa
1
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相关代理商/技术参数 |
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| LTC3108 | 制造商:LINEAR 制造商全称:LINEAR 功能描述:Ultralow Voltage Step-Up Converter and Power Manager |
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