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CS52843EDR8 PDF预览

CS52843EDR8

更新时间: 2024-11-15 23:16:27
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 149K
描述
Current Mode PWM Control Circuit

CS52843EDR8 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:0.150 INCH, SO-8Reach Compliance Code:unknown
风险等级:5.83Is 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 V
JESD-30 代码:R-PDSO-G8JESD-609代码:e0
功能数量:1端子数量:8
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:1 A封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
认证状态:Not Qualified子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:BUCK
最大切换频率:500 kHz技术:BIPOLAR
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUALBase Number Matches:1

CS52843EDR8 数据手册

 浏览型号CS52843EDR8的Datasheet PDF文件第2页浏览型号CS52843EDR8的Datasheet PDF文件第3页浏览型号CS52843EDR8的Datasheet PDF文件第4页浏览型号CS52843EDR8的Datasheet PDF文件第5页浏览型号CS52843EDR8的Datasheet PDF文件第6页 
CS52843  
Current Mode PWM  
Control Circuit  
Description  
Features  
Optimized for Off-line  
The CS52843 provides all the nec-  
before the output stage is enabled.  
In the CS52843 turn on is at 8.4V  
and turn off at 7.6V.  
Control  
essary features to implement off-  
line fixed frequency current-mode  
control with a minimum number  
of external components.  
Temperature  
Internally  
Compensated Oscillator  
Other features include low start-up  
current, pulse-by-pulse current lim-  
iting, and a high-current totem pole  
output for driving capacitive loads,  
such as gate of a power MOSFET.  
The output is low in the off state,  
consistent with N-channel devices.  
V  
Stabilized before  
REF  
Output Stage is Enabled  
The CS52843 incorporates a new  
precision temperature-controlled  
oscillator to minimize variations in  
frequency. An undervoltage lock-  
out ensures that VREF is stabilized  
Very Low Start-up Current  
300 µA (typ)  
Pulse-by-pulse Current  
Limiting  
Improved Undervoltage  
Absolute Maximum Ratings  
Lockout  
Supply Voltage (ICC<30mA)..........................................................Self Limiting  
Double Pulse Suppression  
2% 5 Volt Reference  
Supply Voltage (Low Impedance Source)...................................................30V  
Output Current...............................................................................................±1A  
Output Energy (Capacitive Load) .................................................................5µJ  
Analog Inputs (VFB, VSENSE)...........................................................-0.3V to 5.5V  
High Current Totem Pole  
Output  
Error Amp Output Sink Current...............................................................10mA  
Lead Temperature Soldering  
Reflow (SMD styles only)...........60 sec. max above 183°C, 230°C peak  
Block Diagram  
Package Options  
8L SO Narrow  
VCC Undervoltage Lock-out  
VCC  
VCC Pwr  
VREF  
COMP  
VFB  
8
7
6
5
1
VCC  
2
34V  
Set/  
5.0 Volt  
VREF  
Reset Reference  
VOUT  
Gnd  
Sense  
OSC  
3
4
Gnd  
VFB  
8.4V/7.6V  
Internal  
Bias  
Error  
14L SO Narrow  
Amplifier  
OUTPUT  
ENABLE  
-
R
R
1
2
3
4
5
6
7
14  
13  
12  
COMP  
COMP  
NC  
VREF  
NC  
+
2.50V  
VOUT  
NOR  
OSC  
VFB  
VCC  
Oscillator  
11 VCC Pwr  
NC  
S
R
2 R  
Pwr Gnd  
10  
Sense  
NC  
VOUT  
R
1V  
9
Pwr Gnd  
PWM  
Latch  
Current  
Sensing  
Comparator  
Gnd  
8
Sense  
OSC  
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. 12/23/97  
A
®
Company  
1

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