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KA3842AMM 参数 Datasheet PDF下载

KA3842AMM图片预览
型号: KA3842AMM
PDF下载: 下载PDF文件 查看货源
内容描述: 线性集成电路(电流模式PWM控制器) [Linear Integrated Circuit(CURRENT-MODE PWM CONTROLLER)]
分类和应用: 控制器
文件页数/大小: 5 页 / 180 K
品牌: Wing Shing [ WING SHING COMPUTER COMPONENTS ]
 浏览型号KA3842AMM的Datasheet PDF文件第2页浏览型号KA3842AMM的Datasheet PDF文件第3页浏览型号KA3842AMM的Datasheet PDF文件第4页浏览型号KA3842AMM的Datasheet PDF文件第5页  
Linear Integrated Circuit  
KA3842A  
KA3842AM  
CURRENT- MODE P WM CONTROLLER  
PIN CONNECTION  
The KA3842A  
are fixe fre que ncy curre nt-mode  
PWM controlle r. The y are spe cially de signe d for OFF- Line and DC- to- DC conve rte r  
applications with minimal e xte rnal compone nts. The se inte grate d circuits fe ature  
trimme d oscillator for pre cise duty cycle control, a te mpe rature compe nsate d re fe re nce ,  
KA3842AM  
a
high gain e rror amplifie r, curre nt se nsing comparator, and  
output ide ally suite d for driving a powe r MOSFET.  
a high curre nt tote mpole  
Prote ction circuity include s built unde r- voltage lockout and curre nt limiting.  
The  
KA3842A,KA3842AM  
have UVLO thresholds of 16 V(on) and 10 V (off).  
The KA3842A ,KA384AM  
operate  
duty cycle  
The KA3842A has been proven  
within 100%  
in applications  
using the same external components as Motorola's parts,among others .The KA3842AM  
Many applications can use either  
have Start-Up Curre nt 0,45 mA  
has been optimized for compatibility with Samsung's parts  
The KA3842A  
KA3842AM  
KA3842A or KA3842AM  
SO-8  
DIP-8  
FEATURES  
o rd e rin g  
·
·
·
·
Low Start-Up Curre nt  
Maximum Duty Cycle  
U/ V Lockout With Hyste re sis  
Ope rating Fre gue ncy Up To 500khz  
in fo rm a tio n  
De vice  
Package  
Ope rating te mpe rature  
0 to + 700C  
KA3842AM  
KA3842AMM  
KA3842AN  
SO-8  
SO-8  
DIP-8  
DIP-8  
"
"
"
KA3842AMN  
BLOCK DIAGRAM  
Ab s o lu te Ma xim u m Ra tin g s  
Ch a ra c te ris tic  
Supply Voltage  
S ym b o l  
VCC  
Va lu e  
Un it  
V
30  
Output Curre nt  
IO  
A
±1  
Analog Inputs  
V
I
V
- 0.3 to VCC  
Error Amp Output Sink Curre nt  
Powe r Dissipation (TA= 250C)  
ISINK (E.A)  
PO  
10  
1
mA  
W
Wing Shing Computer Components Co., (H.K.)Ltd.  
Homepage: http://www.wingshing.com  
Tel:(852)2341 9276 Fax:(852)2797 8153  
E-mail: wsccltd@hkstar.com  
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