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SG3845Y PDF预览

SG3845Y

更新时间： 2024-11-22 22:43:15
品牌 Logo 应用领域
美高森美 - MICROSEMI 稳压器开关式稳压器或控制器电源电路开关式控制器
页数 文件大小 规格书
12页 216K
描述
CURRENT MODE PWM CONTROLLER

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中文翻译

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SG3845Y 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：DIP
包装说明：HERMETIC SEALED, CERAMIC, DIP-8针数：8
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.14
Is Samacsys：N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：8.2 V
标称输入电压：15 VJESD-30 代码：R-GDIP-T8
JESD-609代码：e0长度：10.415 mm
功能数量：1端子数量：8
最高工作温度：70 °C最低工作温度：
最大输出电流：1 A封装主体材料：CERAMIC, GLASS-SEALED
封装代码：DIP封装等效代码：DIP8,.3
封装形状：RECTANGULAR封装形式：IN-LINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：5.08 mm子类别：Switching Regulator or Controllers
表面贴装：NO切换器配置：SINGLE
最大切换频率：500 kHz技术：BIPOLAR
温度等级：COMMERCIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：7.62 mmBase Number Matches：1

SG3845Y 数据手册

 浏览型号SG3845Y的Datasheet PDF文件第2页浏览型号SG3845Y的Datasheet PDF文件第3页浏览型号SG3845Y的Datasheet PDF文件第4页浏览型号SG3845Y的Datasheet PDF文件第5页浏览型号SG3845Y的Datasheet PDF文件第6页浏览型号SG3845Y的Datasheet PDF文件第7页 
LIN DOC #: 1844  
SG1844/SG1845 Series  
U R R E N T M O D E P W M C O N T R O L L E R  
C
T H E I N F I N I T E P O W E R O F I N N O V A T I O N  
P R O D U C T I O N D A T A S H E E T  
DESCRIPTION  
KEY FEATURES  
■ OPTIMIZED FOR OFF-LINE CONTROL  
■ LOW START-UP CURRENT (<1mA)  
■ AUTOMATIC FEED FORWARD  
COMPENSATION  
■ TRIMMED OSCILLATOR DISCHARGE  
The SG1844/45 family of control ICs  
provides all the necessary 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.  
The bandgap reference is trimmed to  
1ꢀ over temperature. Oscillator  
discharge current is trimmed to less than  
1ꢁꢀ. 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 <5ꢁꢀ 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 SG2844/45 is specified for the  
industrial range of -25°C to 85°C, and  
the SG3844/45 is designed for the  
commercial range of ꢁ°C to 7ꢁ°C.  
CURRENT  
■ PULSE-BY-PULSE CURRENT LIMITING  
■ ENHANCED LOAD RESPONSE  
CHARACTERISTICS  
■ UNDER-VOLTAGE LOCKOUT WITH 6V  
HYSTERESIS (SG1844 only)  
■ DOUBLE PULSE SUPPRESSION  
■ HIGH-CURRENT TOTEM-POLE OUTPUT  
■ INTERNALLY TRIMMED BANDGAP  
REFERENCE  
■ 500kHz OPERATION  
■ UNDERVOLTAGE LOCKOUT  
SG1844 - 16 volts  
SG1845 - 8.4 volts  
PRODUCT HIGHLIGHT  
■ LOW SHOOT-THROUGH CURRENT <75mA  
OVER TEMPERATURE  
TYPICAL APPLICATION OF SG3844 IN A FLYBACK CONVERTER  
HIGH RELIABILITY FEATURES  
RST  
■ AVAILABLE TO MIL-STD-883B  
■
LINFINITY LEVEL "S" PROCESSING AVAILABLE  
IST  
AC  
INPUT  
VCC  
SG3844  
PACKAGE ORDER INFORMATION  
Plastic DIP  
8-pin  
Plastic DIP  
14-pin  
Plastic SOIC  
8-pin  
Plastic SOIC  
14-pin  
Ceramic DIP  
8-pin  
Ceramic DIP  
14-pin  
Cer. Flatpack Ceramic LCC  
L
1ꢁ-pin 2ꢁ-pin  
TA (°C)  
0 to 70  
M
N
DM  
D
Y
J
F
SG3844M  
SG3844N  
SG3844DM  
SG3844D  
SG3844Y  
SG3845Y  
SG2844Y  
SG2845Y  
SG1844Y  
SG1845Y  
SG3844J  
SG3845J  
SG2844J  
SG2845J  
SG1844J  
SG1845J  
—
—
—
—
—
—
—
—
—
—
SG3845M  
SG3845N  
SG3845DM  
SG3845D  
SG2844M  
SG2844N  
SG2844DM  
SG2844D  
—
-25 to 85  
-55 to 125  
MIL-STD/883  
DESC  
SG2845M  
SG2845N  
SG2845DM  
SG2845D  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
SG1844L  
SG1845L  
SG1844Y/883B SG1844J/883B  
SG1845Y/883B SG1845J/883B  
SG1844L/883B  
SG1845L/883B  
SG1844Y/DESC SG1844J/DESC SG1844F/DESC SG1844L/DESC  
SG1845Y/DESC SG1845J/DESC SG1845F/DESC SG1845L/DESC  
Note: All surface-mount packages are available in Tape & Reel.  
F O R F U R T H E R I N F O R M AT I O N C A L L ( 7 1 4 ) 8 9 8 - 8 1 2 1  
Copyright © 2000  
Rev. 1.4 4/00  
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841  
1
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中文翻译

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