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SG1844J-TR

更新时间： 2023-01-02 15:19:19
品牌 Logo 应用领域
美高森美 - MICROSEMI 开关
页数 文件大小 规格书
19页 752K
描述
Switching Controller, Current-mode, 1A, CDIP14, DIP-14

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SG1844J-TR 技术参数

生命周期：Active包装说明：DIP,
Reach Compliance Code：compliant风险等级：5.64
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：25 V
最小输入电压：12 V标称输入电压：15 V
JESD-30 代码：R-CDIP-T14长度：19.62 mm
功能数量：1端子数量：14
最高工作温度：125 °C最低工作温度：-55 °C
最大输出电流：1 A封装主体材料：CERAMIC, METAL-SEALED COFIRED
封装代码：DIP封装形状：RECTANGULAR
封装形式：IN-LINE座面最大高度：5.08 mm
表面贴装：NO切换器配置：SINGLE
温度等级：MILITARY端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
宽度：7.62 mmBase Number Matches：1

SG1844J-TR 数据手册

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SG1844/SG1845/SG3844/SG3845  
Current Mode PWM Controller  
Features  
Description  
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Optimized for Off-Line Control  
The SG1844/45 family of control ICs provides all the  
required features to implement off-line Fixed  
Frequency, Current-mode switching power supplies  
with a minimum number of external components.  
Current-mode architecture demonstrates improved line  
regulation, improved load regulation, pulse-by pulse  
current limiting and inherent protection of the power  
supply output switch.  
Low Start-Up Current (<1mA)  
Automatic Feed Forward Compensation  
Trimmed Oscillator  
Discharge Current  
Pulse-By-Pulse Current Limiting  
Enhanced Load Response Characteristics  
Undervoltage Lockout with 6V Hysteresis  
(SG1844 only)  
The Bandgap reference is trimmed to ±1% over  
temperature. Oscillator discharge current is trimmed to  
less than ±10%. The SG1844/45 has under-voltage  
lockout, current-limiting circuitry and start-up current of  
less than 1mA. The totem-pole output is optimized to  
drive the gate of a power MOSFET. The output is low  
in the off state to provide direct interface to an N-  
channel device. Both operate up to a maximum duty  
cycle range of zero to <50% due to an internal toggle  
flip-flop which blanks the output off every other clock  
cycle. The SG1844/45 is specified for operation over  
the full military ambient temperature range of -55°C to  
125°C. The SG3844/45 is designed for the commercial  
range of 0°C to 70°C.  
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Double Pulse Suppression  
High-Current Totem-Pole Output  
Internally Trimmed Bandgap Reference  
500kHz Operation  
Under-voltage Lockout  
SG1844 - 16 Volts  
SG1845 - 8.4 Volts  
.
Low Shoot-through Current <75mA Over  
Temperature  
Application  
. Available to MIL-STD-883  
. Available to DSCC  
– Standard Microcircuit Drawing (SMD)  
. SGR1844/45 Rad-Tolerant Version Available  
Product Highlight  
RST  
IST  
AC  
INPUT  
Vcc  
SG3844  
Figure 1 · Product Highlight  
November 2014 Rev. 1.7  
www.microsemi.com  
© 2014 Microsemi Corporation- Analog Mixed Signal Group  
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