參數(shù)資料
型號(hào)： UCC3882DW
英文描述： 5-pin supervisor with watchdog timer and push-button reset
中文描述： 電流模式開(kāi)關(guān)電源控制器
文件頁(yè)數(shù)： 1/19頁(yè)
文件大?。?/td> 296K
代理商： UCC3882DW
SLUS458C AUGUST 2001 REVISED SEPTEMBER 2003
1
www.ti.com
FEATURES
Enhanced Replacement for UC3842A Family
With Pin-to-Pin Compatibility
1-MHz Operation
50-
μ
A Standby Current, 100-
μ
A Maximum
Low Operating Current of 2.3 mA at 52 kHz
Fast 35-ns Cycle-by-Cycle Overcurrent
Limiting
±
1-A Peak Output Current
Rail-to-Rail Output Swings with 25-ns Rise
and 20-ns Fall Times
±
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
Switch-Mode Power Supplies
dc-to-dc Converters
Board Mount Power Modules
DESCRIPTION
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.
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.
The UCC38C4x family is offered in 8-pin
packages, MSOP (DGK), SOIC (D) and PDIP (P).
FUNCTIONAL BLOCK DIAGRAM
UDG99139
8
2
4
7
VREF
Note: Toggle flipflop used only in UCC38C41, UCC38C44, and UCC38C45.
VREF
RT/CT
+
VDD
5
GND
6
OUT
OSC
T
S
Q
Q
R
FB
2R
R
1V
1
COMP
3
CS
UVLO
ERROR AMP
(NOTE)
+
+
5.0 V
2.5 V
VREF
GOOD LOGIC
!"
# $%&"
'& ",& "&#
'$&##0
!#
'%()$!"
&-!# #"%&"#
&$&##!)/
*!"&+
*%$"#
#"!*!* .!!"/+
"&#"0
$
" #'&$$!"#
*%$"
*&# "
$)%*&
!)) '!!&"&#+
Copyright
2003, Texas Instruments Incorporated
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.
相關(guān)PDF資料
PDF描述
UCC388DPTR Positive Adjustable Voltage Regulator
UCC388PW Positive Adjustable Voltage Regulator
UCC388PWTR Positive Adjustable Voltage Regulator
UCC180000D Very low drop and low noise voltage regulator low ESR capacitors compatible, with inhibit function
UCC180000DTR Very low drop and low noise voltage regulator low ESR capacitors compatible, with inhibit function
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UCC3882DW-1 功能描述:DC/DC 開(kāi)關(guān)控制器 Avg Crnt Mode Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
UCC3882DW-1G4 功能描述:DC/DC 開(kāi)關(guān)控制器 Avg Crnt Mode Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
UCC3882DWTR 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Current-Mode SMPS Controller
UCC3882DWTR-1 功能描述:DC/DC 開(kāi)關(guān)控制器 Avg Crnt Mode Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
UCC3882DWTR-1G4 功能描述:DC/DC 開(kāi)關(guān)控制器 Avg Crnt Mode Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*