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CS3845BGN8 PDF预览

CS3845BGN8

更新时间: 2024-11-07 20:30:55
品牌 Logo 应用领域
安森美 - ONSEMI 开关光电二极管
页数 文件大小 规格书
8页 58K
描述
1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDIP8, 0.300 INCH, PLASTIC, DIP-8

CS3845BGN8 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:DIP包装说明:0.300 INCH, PLASTIC, MS-001, DIP-8
针数:8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
Factory Lead Time:1 week风险等级:5.72
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-PDIP-T8
JESD-609代码:e0长度:9.59 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:1 A封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装等效代码:DIP8,.3
封装形状:RECTANGULAR封装形式:IN-LINE
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
座面最大高度:4.07 mm子类别:Switching Regulator or Controllers
表面贴装:NO切换器配置:SINGLE
最大切换频率:57 kHz技术:BIPOLAR
温度等级:COMMERCIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.62 mmBase Number Matches:1

CS3845BGN8 数据手册

 浏览型号CS3845BGN8的Datasheet PDF文件第2页浏览型号CS3845BGN8的Datasheet PDF文件第3页浏览型号CS3845BGN8的Datasheet PDF文件第4页浏览型号CS3845BGN8的Datasheet PDF文件第5页浏览型号CS3845BGN8的Datasheet PDF文件第6页浏览型号CS3845BGN8的Datasheet PDF文件第7页 
CS3845B  
Current Mode PWM  
Control Circuit  
with 50% Max Duty Cycle  
Description  
Features  
The CS3845B provides all the neces-  
exceeds 50%. The undervoltage lock-  
Optimized for Off-line Use  
sary features to implement off-line  
fixed frequency current-mode control  
with a minimum number of external  
components.  
out feature ensures that V is stabi-  
REF  
Temperature  
Compensated Oscillator  
lized within specification before the  
output stage is enabled. The CS3845B  
has been optimized for lower start up  
current (500µA max).  
50% Maximum Duty-cycle  
Clamp  
The CS3845B incorporates a precision  
temperature-controlled oscillator to  
minimize variations in frequency. An  
internal toggle flip-flop, which blanks  
the output off every other clock cycle,  
ensures that the duty-cycle never  
Other features include 1% trimmed  
band gap reference, pulse-by-pulse  
current limiting, and a high-current  
totem pole output for driving capaci-  
tive loads.  
Low Start-up Current  
(500µA max)  
Pulse-by-pulse Current  
Limiting  
Undervoltage Active Pull  
Down  
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, VSENSE) ..........................................................–0.3V to 5.5V  
Error Amp Output Sink Current...............................................................10mA  
Lead Temperature Soldering  
1% Trimmed Bandgap  
Reference  
High Current Totem Pole  
Output  
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  
Package Options  
Block Diagram  
8 Lead PDIP & SO  
1
2
3
4
8
7
6
5
COMP  
VFB  
VREF  
VCC  
VCC Undervoltage Lock-out  
VCC  
VCC Pwr  
34V  
Sense  
OSC  
VOUT  
Gnd  
Set/  
5.0 Volt  
VREF  
Reset Reference  
Gnd  
VFB  
8.4V/7.6V  
Internal  
Bias  
Error  
14 Lead SO Narrow  
Amplifier  
VREF  
R
R
Undervoltage  
Lockout  
-
COMP  
1
2
3
4
5
6
7
14  
13  
12  
COMP  
VREF  
+
2.50V  
NC  
VFB  
NC  
Toggle  
Flip-Flop  
NOR  
VOUT  
OSC  
Oscillator  
VCC  
S
R
11 VCC Pwr  
NC  
2 R  
Pwr Gnd  
10  
9
Sense  
NC  
VOUT  
R
1V  
PWM  
Latch  
Current  
Sensing  
Comparator  
Gnd  
Sense  
8
OSC  
Pwr Gnd  
ON Semiconductor  
2000 South County Trail, East Greenwich, RI 02818  
Tel: (401)885–3600 Fax: (401)885–5786  
N. American Technical Support: 800-282-9855  
Web Site: www.cherry–semi.com  
December, 1999 - Rev. 6  
1

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