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AP3844S8L PDF预览

AP3844S8L

更新时间： 2024-11-21 20:16:59
品牌 Logo 应用领域
ICT 光电二极管
页数 文件大小 规格书
8页 214K
描述
Switching Regulator, Current-mode, 0.7A, 500kHz Switching Freq-Max, PDSO8, LEAD FREE, SOP-8

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AP3844S8L 技术参数

生命周期：Transferred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：5.14
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING REGULATOR
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：11.5 V
标称输入电压：15 VJESD-30 代码：R-PDSO-G8
长度：5.05 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：0.7 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：COMMERCIAL
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

AP3844S8L 数据手册

 浏览型号AP3844S8L的Datasheet PDF文件第2页浏览型号AP3844S8L的Datasheet PDF文件第3页浏览型号AP3844S8L的Datasheet PDF文件第4页浏览型号AP3844S8L的Datasheet PDF文件第5页浏览型号AP3844S8L的Datasheet PDF文件第6页浏览型号AP3844S8L的Datasheet PDF文件第7页 
AP3842/3/4/5  
High Performance Current Mode PWM Controller  
„ Features  
„ General Description  
• Optimized for Off-Line and DC to DC Converters  
• Low Start-Up Current (≦0.5mA)  
The AP3842/3/4/5 family of control ICs provides the  
necessary features to implement off-line or DC to  
DC fixed frequency current mode control schemes  
with a minimal external parts count. Internally  
implemented circuits include under voltage lockout  
featuring start-up current less than 0.5 mA, a  
precision reference trimmed for accuracy at the  
error amp input, logic to insure latched operation, a  
PWM comparator which also provides current limit  
control, and a totem pole output stage designed to  
source or sink high peak current. The output stage,  
suitable for driving N-Channel MOSFETs, is low in  
the off-state.  
• Automatic Feed Forward Compensation  
• Pulse-by-Pulse Current Limiting  
• Enhanced Load Response Characteristics  
• Under-Voltage Lockout (UVLO) with Hysteresis  
• Double Pulse Suppression  
• High Current Totem Pole Output  
• Internally Trimmed Bandgap Reference  
• Current Mode Operation to 500KHZ  
• Low Ro Error Amplifier  
„ Pin Connections  
PDIP-8L, SOP-8L  
Top View  
Differences between members of this family are the  
under-voltage lockout thresholds and maximum  
duty cycle ranges. The AP3842 and AP3844 have  
UVLO thresholds of 16V(on) and 10V(off), ideally  
suited for off-line applications. The corresponding  
thresholds for the AP3843 and AP3845 are 8.5V  
and 7.6V. The AP3842 and AP3843 can operate to  
duty cycles approaching 100%. A range of the zero  
to < 50% is obtained by the AP3844 and AP3845  
by the addition of an internal toggle flip flop which  
blanks the output off every other clock cycle.  
COMP.  
VFB  
VREF  
VI  
1
2
3
4
8
7
6
5
ISENSE  
RT/CT  
OUTPUT  
GROUND  
„ Ordering Information  
AP 384X X X X  
Part No.  
Package  
Packing  
Lead Free  
2:3842  
3:3843  
4:3844  
5:3845  
S8:SOP-8L  
N8:PDIP-8L  
Blank : Normal  
Blank: Tube  
L : Lead Free Package  
A : Taping  
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of  
this product. No rights under any patent accompany the sale of the product.  
Rev.1.0 Oct.11, 2004  
1/8  
12345678

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