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UCC38C41

更新时间： 2024-11-22 22:39:59
品牌 Logo 应用领域
德州仪器 - TI 信息通信管理控制器
页数 文件大小 规格书
19页 295K
描述
BICMOS LOW POWER CURRENT MODE PWM CONTROLLER

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UCC38C41 数据手册

 浏览型号UCC38C41的Datasheet PDF文件第2页浏览型号UCC38C41的Datasheet PDF文件第3页浏览型号UCC38C41的Datasheet PDF文件第4页浏览型号UCC38C41的Datasheet PDF文件第5页浏览型号UCC38C41的Datasheet PDF文件第6页浏览型号UCC38C41的Datasheet PDF文件第7页 
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SLUS458C − AUGUST 2001 − REVISED SEPTEMBER 2003  
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FEATURES  
DESCRIPTION  
D
Enhanced Replacement for UC3842A Family  
With Pin-to-Pin Compatibility  
UCC38C4x family is a high-performance current-  
mode PWM controller. It is an enhanced BiCMOS  
version with pin-for-pin compatibility to the  
industry standard UC384xA family and UC384x  
family of PWM controllers. In addition, lower  
startup voltage versions of 7 V are offered as  
UCC38C40 and UCC38C41.  
D
D
D
D
1-MHz Operation  
50-µA Standby Current, 100-µA Maximum  
Low Operating Current of 2.3 mA at 52 kHz  
Fast 35-ns Cycle-by-Cycle Overcurrent  
Limiting  
Providing necessary features to control fixed  
frequency, peak current-mode power supplies,  
this family offers the following performance  
advantages. The device offers high-frequency  
operation up to 1 MHz with low start-up and  
operating currents, thus minimizing start-up loss  
and low operating power consumption for  
improved efficiency. The device also features a  
very fast current-sense-to-output delay time of  
35 ns and a 1 A peak output current capability  
with improved rise and fall times for driving large  
external MOSFETs directly.  
D
1-A Peak Output Current  
D
Rail-to-Rail Output Swings with 25-ns Rise  
and 20-ns Fall Times  
D
D
D
D
1% Initial Trimmed 2.5-V Error Amplifier  
Reference  
Trimmed Oscillator Discharge Current  
New Under Voltage Lockout Versions  
MSOP-8 Package Minimizes Board Space  
APPLICATIONS  
D
D
D
Switch-Mode Power Supplies  
The UCC38C4x family is offered in 8-pin  
packages, MSOP (DGK), SOIC (D) and PDIP (P).  
dc-to-dc Converters  
Board Mount Power Modules  
FUNCTIONAL BLOCK DIAGRAM  
5.0 V  
VREF  
8
VREF  
7
5
VDD  
GND  
UVLO  
+
VREF  
GOOD LOGIC  
RT/CT  
4
OSC  
(NOTE)  
T
6
OUT  
2.5 V  
ERROR AMP  
2R  
+
S
R
Q
FB  
COMP  
CS  
2
1
3
R
1V  
Q
Note: Toggle flip−flop used only in UCC38C41, UCC38C44, and UCC38C45.  
UDG−99139  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments  
semiconductor products and disclaimers thereto appears at the end of this data sheet.  
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Copyright 2003, Texas Instruments Incorporated  
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ꢠ ꢤ ꢡ ꢠꢋ ꢚꢮ ꢜꢛ ꢟ ꢧꢧ ꢥꢟ ꢝ ꢟ ꢞ ꢤ ꢠ ꢤ ꢝ ꢡ ꢩ  
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UCC38C41 替代型号

型号 品牌 替代类型 描述 数据表
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