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AS3842D813 PDF预览

AS3842D813

更新时间： 2024-01-04 06:25:09
品牌 Logo 应用领域
其他 - ETC 开关光电二极管控制器
页数 文件大小 规格书
20页 158K
描述
Current Mode Controller

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中文翻译

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AS3842D813 技术参数

生命周期：Obsolete零件包装代码：SOIC
包装说明：SOP,针数：8
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.76
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：12 V
标称输入电压：15 VJESD-30 代码：R-PDSO-G8
长度：4.9 mm功能数量：1
端子数量：8最高工作温度：150 °C
最低工作温度：最大输出电流：1 A
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
认证状态：Not Qualified座面最大高度：1.75 mm
表面贴装：YES切换器配置：SINGLE
最大切换频率：500 kHz温度等级：OTHER
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL宽度：3.9 mm
Base Number Matches：1

AS3842D813 数据手册

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AS384x  
Current Mode Controller  
SEMICONDUCTOR  
Features  
Description  
2.5 V bandgap reference trimmed to  
The AS3842 family of control ICs provide pin-for-pin replacement of the  
industry standard UC3842 series of devices. The devices are  
redesigned to provide significantly improved tolerances in power sup-  
ply manufacturing. The 2.5 V reference has been trimmed to 1.0%  
tolerance. The oscillator discharge current is trimmed to provide guar-  
anteed duty cycle clamping rather than specified discharge current.  
The circuit is more completely specified to guarantee all parameters  
impacting power supply manufacturing tolerances.  
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1.0% and temperature-compensated  
Standard temperature range extended  
to 105¡C  
AS3842/3 oscillations trimmed for  
precision duty cycle clamp  
AS3844/5 have exact 50% max duty  
cycle clamp  
In addition, the oscillator and flip-flop sections have been enhanced to  
provide additional performance. The RT/CT pin now doubles as a syn-  
chronization input that can be easily driven from open collector/open  
drain logic outputs. This sync input is a high impedance input and can  
easily be used for externally clocked systems. The new flip-flop topol-  
ogy allows the duty cycle on the AS3844/5 to be guaranteed between  
49 and 50%. The AS3843/5 requires less than 0.5 mA of start-up cur-  
rent over the full temperature range.  
Advanced oscillator design simplifies  
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synchronization  
Improved specs on UVLO and  
hysteresis provide more predictable  
start-up and shutdown  
Improved 5 V regulator provides better  
AC noise immunity  
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Guaranteed performance with current  
sense pulled below ground  
Pin Configuration Ñ Top view  
PDIP (N)  
8L SOIC (D8)  
14L SOIC (D14)  
COMP  
V
COMP  
V
COMP  
NC  
V
REG  
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
REG  
REG  
V
V
V
V
CC  
NC  
FB  
CC  
FB  
ISENSE  
RT/CT  
OUT  
GND  
ISENSE  
RT/CT  
OUT  
GND  
V
V
FB  
CC  
NC  
ISENSE  
NC  
V
C
OUT  
PWR G  
GND  
8
RT/CT  
Ordering Information  
AS384X D8 13  
Circuit Type:  
Packaging Option:  
Current Mode Controller (See Table A)  
= Tube  
T
= Tape and Reel (13" Reel Dia)  
13  
Package Style  
Table A  
D8 = 8 Pin Plastic SOIC  
D14 =14 Pin Plastic SOIC  
N = 8 Pin Plastic DIP  
Duty Cycle  
Typ.  
Model  
AS3842  
AS3843  
AS3844  
AS3845  
VCC(min)  
VCC(on)  
16  
8.4  
16  
8.4  
ICC  
10  
7.6  
10  
97%  
97%  
49.5%  
49.5%  
0.5 mA  
0.3 mA  
0.5 mA  
0.3 mA  
7.6  
ASTEC Semiconductor  
1
1234567...20

中文翻译

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AS3842D8T ETC

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 		Switching Regulator/Controller, Current-mode, 0.001A, 57kHz Switching Freq-Max, BIPolar, P
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AS3842NT ETC

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AS3842P CALOGIC

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 		Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, PDIP8, PLASTIC, DIP-8
AS3842Z-8 CALOGIC

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 		Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, PDSO8, PLASTIC, MSOP-8
AS3843 ETC

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AS3843D1413 ETC

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 		Current Mode Controller
AS3843D14T ETC

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 		Current Mode Controller
AS3843D-8 SIPEX

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 		Switching Regulator/Controller, Current-mode, 0.001A, 57kHz Switching Freq-Max, BIPolar, P

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