5秒后页面跳转
UC3842N PDF预览

UC3842N

更新时间: 2024-11-24 22:41:51
品牌 Logo 应用领域
恩智浦 - NXP 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
8页 75K
描述
Current-mode PWM controller

UC3842N 技术参数

生命周期:Obsolete零件包装代码:DIP
包装说明:DIP,针数:8
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.07
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
长度:9.41 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
标称输出电压:2.5 V封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装形状:RECTANGULAR
封装形式:IN-LINE认证状态:Not Qualified
座面最大高度:4.06 mm最大供电电流 (Isup):17 mA
表面贴装:NO切换器配置:SINGLE
最大切换频率:400 kHz温度等级:COMMERCIAL
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL宽度:7.62 mm
Base Number Matches:1

UC3842N 数据手册

 浏览型号UC3842N的Datasheet PDF文件第2页浏览型号UC3842N的Datasheet PDF文件第3页浏览型号UC3842N的Datasheet PDF文件第4页浏览型号UC3842N的Datasheet PDF文件第5页浏览型号UC3842N的Datasheet PDF文件第6页浏览型号UC3842N的Datasheet PDF文件第7页 
Philips Semiconductors Linear Products  
Product specification  
Current-mode PWM controller  
UC3842  
DESCRIPTION  
PIN CONFIGURATIONS  
The UC3842 is available in an 8-Pin mini-DIP the necessary  
features to implement off-line, fixed-frequency current-mode control  
schemes with a minimal external parts count. This technique results  
in improved line regulation, enhanced load response characteristics,  
and a simpler, easier to design control loop. Topological advantages  
include inherent pulse-by-pulse current limiting.  
N Package  
COMP  
1
2
3
4
8
7
6
5
V
V
REF  
CC  
V
FB  
OUTPUT  
GROUND  
I
SENSE  
Protection circuitry includes built-in undervoltage lock-out and  
current limiting. Other features include fully-latched operation, a 1%  
trimmed bandgap reference, and start-up current less than 1mA.  
R
/C  
T
T
TOP VIEW  
These devices feature a totem-pole output designed to source and  
sink high peak current from a capacitive load, such as the gate of a  
power MOSFET. Consistent with N-channel power devices, the  
output is low in the OFF-state.  
D Package  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
V
COMP  
NC  
REF  
NC  
FEATURES  
V
V
CC  
FB  
Low start-up current (1mA)  
NC  
V
C
Automatic feed-forward compensation  
Pulse-by-pulse current limiting  
OUTPUT  
I
SENSE  
NC  
GROUND  
8
POWER GROUND  
R
/C  
T
T
Enhanced load response characteristics  
Undervoltage lock-out with hysteresis  
Double pulse suppression  
TOP VIEW  
High current totem-pole output  
APPLICATIONS  
Internally-trimmed bandgap reference  
400kHz operation, guaranteed min  
Off-line switched mode power supplies  
DC-to-DC converters UC3842  
BLOCK DIAGRAM  
7(11)  
(12)7  
V
CC  
UVLO  
34V  
V
REF  
8(14)  
5.0V  
50mA  
5V  
REF  
(9)5  
(7)4  
S/R  
GND  
6V  
16V  
2.5V  
INTERNAL  
BIAS  
OSC  
R
/C  
T
T
6(10)  
OUTPUT  
S
ERROR  
AMP  
2R  
+
PWM  
LATCH  
(3)2  
(1)1  
(5)3  
R
V
FB  
R
CURRENT  
SENSE  
1V  
COMP  
COMPARATOR  
CURRENT  
SENSE  
5(8)  
NOTE:  
Pin numbers in parentheses refer to the D package.  
1100  
August 31, 1994  
853-0614 13721  

与UC3842N相关器件

型号 品牌 获取价格 描述 数据表
UC3842NG4 TI

获取价格

CURRENT MODE PWM CONTROLLER
UC3842P TI

获取价格

Current Mode PWM Controller
UC3842Q TI

获取价格

1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PQCC20
UC3842QTR ETC

获取价格

Current-Mode SMPS Controller
UC3842T STMICROELECTRONICS

获取价格

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
UC3842TD STMICROELECTRONICS

获取价格

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
UC3842TN ETC

获取价格

Analog IC
UC3842W TI

获取价格

IC,SMPS CONTROLLER,CURRENT-MODE,BIPOLAR,FP,14PIN,CERAMIC
UC3843 TI

获取价格

Current Mode PWM Controller
UC3843 STMICROELECTRONICS

获取价格

CURRENTMODE PWM CONTROLLER