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AP3842S8LA PDF预览

AP3842S8LA

更新时间: 2024-11-18 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

AP3842S8LA 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
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 V
JESD-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 mmBase Number Matches:1

AP3842S8LA 数据手册

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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  

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