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MSA2812S/883 PDF预览

MSA2812S/883

更新时间： 2024-09-25 02:57:35
品牌 Logo 应用领域
CRANE 转换器模拟IC信号电路输入元件
页数 文件大小 规格书
8页 123K
描述
DC/DC CONVERTERS 28 VOLT INPUT

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MSA2812S/883 技术参数

是否Rohs认证： 不符合生命周期：Contact Manufacturer
包装说明：DIP, DIP8/10,.8,200Reach Compliance Code：compliant
ECCN代码：EAR99风险等级：5.54
模拟集成电路 - 其他类型：DC-DC REGULATED POWER SUPPLY MODULE效率（主输出）：76%
最大输入电压：40 V最小输入电压：16 V
标称输入电压：28 VJESD-30 代码：S-MDMA-P8
最大电网调整率：0.208%最大负载调整率：0.416%
功能数量：1输出次数：1
端子数量：8最高工作温度：125 °C
最低工作温度：-55 °C最大输出电流：0.417 A
最大输出电压：12.12 V最小输出电压：11.88 V
标称输出电压：12 V封装主体材料：METAL
封装代码：DIP封装等效代码：DIP8/10,.8,200
封装形状：SQUARE封装形式：MICROELECTRONIC ASSEMBLY
峰值回流温度（摄氏度）：NOT SPECIFIED保护：CURRENT; INPUT LOW VOLTAGE
认证状态：Not Qualified筛选级别：MIL-PRF-38534 Class H
子类别：Other Analog ICs表面贴装：NO
技术：HYBRID温度等级：MILITARY
端子形式：PIN/PEG端子节距：5.08 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
最大总功率输出：5 W微调/可调输出：NO
Base Number Matches：1

MSA2812S/883 数据手册

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FEATURES  
• –55° to +125°C operation  
• 16 to 40 VDC input  
• Fully isolated  
• Optocoupler feedback  
• Fixed frequency, 550 kHz typical  
(400 kHz typ. 60 V output model)  
• Topology – Flyback  
• 50 V for up to 50 ms transient protection  
• Inhibit function  
MSA SERIES  
5 WATT  
DC/DC CONVERTERS  
28 VOLT NPUT  
I
MODELS  
VDC OUTPUT  
SINGLE  
DUAL  
5
5
5.2  
12  
15  
60  
12  
15  
• Indefinite short circuit protection  
• Up to 76% efficiency, 16 W/in  
3
Size (max.): 1.075 x 1.075 x 0.270 inches (27.31 x 27.31 x 6.86 mm)  
Weight:  
15 grams maximum.  
Screening:  
Standard, ES, or 883 (Class H).  
DESCRIPTION  
WIDE VOLTAGE RANGE  
The MSA converters are designed to provide full power operation  
over a full 16 to 40 VDC voltage range. Operation below 16 volts,  
including MIL-STD-704E emergency power conditions is possible  
with derated power. Please refer to the low line dropout graphs  
(Figures 17 and 18) for details. A low voltage lockout feature keeps  
the converter shutdown below approximately 13 VDC to ensure  
smooth initialization.  
The MSA Series™ of high frequency DC/DC converters offers a new  
standard of performance for low power, military/aerospace grade  
DC/DC converters. MSA parts provide up to 5 watts output power  
over the full military temperature range with up to 76% efficiency.  
Thick-film hybrid techniques provide military/aerospace reliability  
levels and optimum miniaturization. The hermetically sealed case is  
only 1.075 by 1.075 inches — with a height of only 0.270 inches.  
Power density for the MSA Series parts is 16 watts per cubic inch.  
IMPROVED DYNAMIC RESPONSE  
The MSA feed-forward compensation system provides excellent  
dynamic response and noise rejection. Audio rejection is typically 50  
dB. The minimum to maximum step line transient response is typi-  
cally less than 1%.  
The MSA Series’ small size, low height, and hermetically sealed  
metal enclosures make them ideal for use in military, aerospace and  
other high reliability applications. Units are available with standard,  
screening, “ES”, and fully compliant SMD “883” screening. See  
page 8 for screening options and descriptions.  
INHIBIT FUNCTION  
MSA converters provide a TTL open collector-compatible inhibit  
feature that can be used to disable internal switching and inhibit the  
unit’s output. Inhibiting in this manner results in low standby current,  
and no generation of switching noise.  
CONVERTER DESIGN  
The MSA converters are switching regulators that use a flyback  
converter design with a constant switching frequency of 550 kHz.  
They are regulated, isolated units using a pulse width modulated  
topology and built as high reliability thick-film hybrids. Isolation  
between input and output circuits is provided with a transformer in  
the forward power path and an optical link in the feedback control  
loop. Excellent input line transient response and audio rejection is  
achieved by an advanced feed-forward compensation technique.  
Negative output regulation is maintained by tightly coupled  
magnetics. Up to 4 watts, 80% of the total output power, is available  
from either output, provided that the opposite output is simultane-  
ously carrying 20% of the total power. Each output must carry a  
minimum of 20% of the total output power in order to maintain spec-  
ified regulation on the negative output. Predictable current limit is  
accomplished by direct monitoring of the output load current, which  
results in a constant current output above the overload point.  
Internal input and output filters eliminate the need for external  
capacitors.  
The converter is inhibited when the TTL compatible low (≤0.8 V) is  
applied to the inhibit pin. The unit is enabled when the pin, which is  
internally connected to a pull-up resistor, is left unconnected or is  
connected to an open collector gate. The open circuit output voltage  
associated with the inhibit pin is 9 to 11 V. In the inhibit mode, a  
maximum of 4 mA must be sunk from the inhibit pin.  
UNDERVOLTAGE LOCKOUT AND TRANSIENT  
PROTECTION  
Undervoltage lockout helps keep system current levels low during  
initialization or re-start operations. They can withstand short term  
transients of up to 50 volts without damage.  
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