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SG1844F/DESC-TR PDF预览

SG1844F/DESC-TR

更新时间: 2023-02-15 00:00:00
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, 500kHz Switching Freq-Max, BIPolar, CDFP10, CERAMIC, DFP-10

SG1844F/DESC-TR 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:DFP包装说明:DFP, FL10,.3
针数:10Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.9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 VJESD-30 代码:R-CDFP-F10
长度:7.37 mm功能数量:1
端子数量:10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:DFP
封装等效代码:FL10,.3封装形状:RECTANGULAR
封装形式:FLATPACK认证状态:Not Qualified
筛选级别:38535Q/M;38534H;883B座面最大高度:1.7 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:SINGLE最大切换频率:500 kHz
技术:BIPOLAR温度等级:MILITARY
端子形式:FLAT端子节距:1.27 mm
端子位置:DUAL宽度:6.22 mm

SG1844F/DESC-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  
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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  
1

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