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| 型号： | NMA1212SC |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 3/6页 |
| 文件大小： | 0K |
| 描述： | CONV DC/DC 1W 12VIN 12V SIP DL |
| 产品培训模块： | Low Power DC/DC Converters <5W |
| 标准包装： | 25 |
| 系列： | NMA |
| 类型： | 隔离 |
| 输出数： | 2 |
| 电压 - 输入（最小）： | 10.8V |
| 电压 - 输入（最大）： | 13.2V |
| Voltage - Output 1： | 12V |
| Voltage - Output 2： | -12V |
| 电流 - 输出（最大）： | 42mA，42mA |
| 电源（瓦） - 制造商系列： | 1W |
| 电压 - 隔离： | 1kV（1000V） |
| 安装类型： | 通孔 |
| 封装/外壳： | 7-SIP 模块（5 引线） |
| 尺寸/尺寸： | 0.77" L x 0.24" W x 0.39" H（19.6mm x 6.1mm x 9.9mm） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 75% |
| 电源（瓦特）- 最大： | 1W |
| 产品目录页面： | 2717 (CN2011-ZH PDF) |
| 其它名称： | 811-1457-5 |
NMA 5V, 12V & 15V Series
Isolated 1W Dual Output DC/DC Converters
TECHNICAL NOTES
ISOLATION VOLTAGE
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test voltage,
applied for a speci?ed time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Murata Power Solutions NMA series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
For a part holding no speci?c agency approvals, such as the NMA series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or
60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part
could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must
be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according to
safety standard requirements.
REPEATED HIGH-VOLTAGE ISOLATION TESTING
It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials,
construction and environment. The NMA series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled wire. While
parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically
polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We
therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from speci?ed test voltage.
This consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further
insulation system of physical spacing or barriers.
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of
300°C for 10 seconds. The pin termination ?nish on the SIP package type is Tin Plate, Hot Dipped
over Matte Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in
this series are backward compatible with Sn/Pb soldering systems.
For further information, please visit www.murata-ps.com/rohs
APPLICATION NOTES
Minimum load
The minimum load to meet datasheet speci?cation is 10% of the full rated load across the speci?ed input voltage range. Lower than 10% minimum loading will result in
an increase in output voltage, which may rise to typically double the speci?ed output voltage if the output load falls to less than 5%.
Capacitive loading and start up
Typical start up times for this series, with a typical input voltage rise time of 2.2μs and output capacitance of 10μF, are shown in the table below. The product
series will start into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 10μF.
Typical Start-Up Wave Form
Start-up time
μs
Start-up time
μs
NMA0505xC
NMA0509xC
NMA0512xC
NMA0515xC
NMA1205xC
NMA1209xC
2018
6610
14520
20200
1061
3935
NMA1212xC
NMA1215xC
NMA1505xC
NMA1512xC
NMA1515xC
9765
15980
1060
1627
6275
www.murata-ps.com/support
KDC_NMA.G02 Page 3 of 6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NMA1212TM | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| NMA1215D | 功能描述:DC/DC转换器 1W DUAL 12V/15V DIP RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| NMA1215DC | 功能描述:DC/DC转换器 1W DUAL 12V/15V DIP Dual Output RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| NMA1215M | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| NMA1215S | 功能描述:DC/DC转换器 1W DUAL 12V/15V SIP RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
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