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CS3843AGD8 PDF预览

CS3843AGD8

更新时间： 2024-02-09 16:59:30
品牌 Logo 应用领域
樱桃 - CHERRY 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
6页 158K
描述
Off-Line Current Mode PWM Control Circuit with Undervoltage Lockout

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CS3843AGD8 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP,针数：8
Reach Compliance Code：unknown风险等级：5.77
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-PDSO-G8
JESD-609代码：e0长度：4.9 mm
湿度敏感等级：NOT SPECIFIED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：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：COMMERCIAL
座面最大高度：1.75 mm表面贴装：YES
切换器配置：SINGLE温度等级：COMMERCIAL
端子面层：TIN LEAD端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.9 mm
Base Number Matches：1

CS3843AGD8 数据手册

 浏览型号CS3843AGD8的Datasheet PDF文件第2页浏览型号CS3843AGD8的Datasheet PDF文件第3页浏览型号CS3843AGD8的Datasheet PDF文件第4页浏览型号CS3843AGD8的Datasheet PDF文件第5页浏览型号CS3843AGD8的Datasheet PDF文件第6页 
CS2842A/CS3842A  
CS2843A/CS3843A  
Off-Line Current Mode PWM  
Control  
Circuit with Undervoltage Lockout  
Description  
Features  
The CS284XA, CS384XA provides all  
the output stage is enabled. Ion  
implant resistors provide tighter con-  
trol of undervoltage lockout.  
Optimized for Off-line  
Control  
ꢀ
the necessary features to implement  
off-line fixed frequency current-mode  
control with a minimum number of  
external components.  
Internally Trimmed  
Temperature  
Compensated Oscillator  
ꢀ
Other features include low start-up  
current, pulse-by-pulse current limit-  
ing, and a high-current totem pole out-  
put for driving capacitive loads, such  
as the gate of power MOSFET. The out-  
put is LOW in the off state, consistent  
with N-channel devices.  
The CS384XA family incorporates a  
new precision temperature-controlled  
oscillator with an internally trimmed  
discharge current to minimize varia-  
tions in frequency. A precision duty-  
cycle clamp eliminates the need for an  
external oscillator when a 50% duty-  
cycle is used. Duty-cycles greater than  
50% are also possible. On board logic  
ensures that VREF is stabilized before  
Maximum Duty-cycle  
Clamp  
ꢀ
ꢀ V  
stabilized before  
REF  
Output Stage is Enabled  
The CS384XA series of current-mode  
control ICs are available in 8 and14  
lead packages for surface mount (SO)  
applications as well as 8 lead PDIP  
packages.  
ꢀ Low Start-up Current  
ꢀ Pulse-by-pulse Current  
Limiting  
ꢀ Improved Undervoltage  
Lockout  
Absolute Maximum Ratings  
ꢀ Double Pulse Suppression  
Supply Voltage (ICC<30mA).........................................................................Self Limiting  
Supply Voltage (Low Impedance Source) .................................................................30V  
Output Current..............................................................................................................±1A  
Output Energy (Capacitive Load)................................................................................5µJ  
Analog Inputs (VFB, Sense)...........................................................................-0.3V to 5.5V  
Error Amp Output Sink Current.............................................................................10mA  
Lead Temperature Soldering  
ꢀ 1% Trimmed Bandgap  
Reference  
ꢀ High Current Totem Pole  
Output  
Package Options  
Wave Solder (through hole styles only)..........10 sec. max, 260°C peak  
Reflow (SMD styles only)...........60 sec. max above 183°C, 230°C peak  
8 Lead PDIP & SO Narrow  
Block Diagram  
1
2
3
4
8
7
6
5
COMP  
VFB  
VREF  
VCC  
VCC  
VCC Pwr  
Undervoltage  
Lock-out Circuit  
Sense  
OSC  
VOUT  
Gnd  
34V  
Set/  
5V  
VREF  
Reset Reference  
Gnd  
16V/10V  
(8.4V/7.6V)  
Internal  
Bias  
14 Lead SO Narrow  
2.50V  
Output  
Enable  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
COMP  
VREF  
OSC  
NOR  
Oscillator  
NC  
VFB  
NC  
VOUT  
VCC  
S
R
2 R  
+
NC  
VCC Pwr  
VOUT  
PWM  
Latch  
VFB  
–
VC  
Error  
Amplifier  
Pwr Gnd  
R
Sense  
NC  
Current  
Sensing  
1 V  
COMP  
Sense  
Comparator  
Pwr Gnd  
Gnd  
8
OSC  
( ) Indicates CS-2843A/3843A  
Cherry Semiconductor Corporation  
2000 South County Trail, East Greenwich, RI 02818  
Tel: (401)885-3600 Fax: (401)885-5786  
Email: info@cherry-semi.com  
Web Site: www.cherry-semi.com  
Rev. 10/23/98  
1
A
®
Company  
123456

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