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UCC284SDR-12EP PDF预览

UCC284SDR-12EP

更新时间: 2024-11-13 21:02:19
品牌 Logo 应用领域
德州仪器 - TI 光电二极管输出元件调节器
页数 文件大小 规格书
21页 658K
描述
12V FIXED NEGATIVE LDO REGULATOR, 0.5V DROPOUT, PDSO8, PLASTIC, MS-012AA, SOIC-8

UCC284SDR-12EP 技术参数

生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP,针数:8
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.67
最大回动电压 1:0.5 V最大输入电压:15 V
最小输入电压:12.5 VJESD-30 代码:R-PDSO-G8
长度:4.9 mm功能数量:1
端子数量:8工作温度TJ-Max:150 °C
工作温度TJ-Min:-55 °C最大输出电流 1:0.5 A
最大输出电压 1:12.24 V最小输出电压 1:11.64 V
标称输出电压 1:12 V封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE认证状态:Not Qualified
调节器类型:FIXED NEGATIVE SINGLE OUTPUT LDO REGULATOR座面最大高度:1.75 mm
表面贴装:YES端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
宽度:3.9 mmBase Number Matches:1

UCC284SDR-12EP 数据手册

 浏览型号UCC284SDR-12EP的Datasheet PDF文件第2页浏览型号UCC284SDR-12EP的Datasheet PDF文件第3页浏览型号UCC284SDR-12EP的Datasheet PDF文件第4页浏览型号UCC284SDR-12EP的Datasheet PDF文件第5页浏览型号UCC284SDR-12EP的Datasheet PDF文件第6页浏览型号UCC284SDR-12EP的Datasheet PDF文件第7页 
UCC284-EP  
www.ti.com ....................................................................................................................................... SLVS862ANOVEMBER 2008REVISED NOVEMBER 2008  
LOW-DROPOUT 0.5-A NEGATIVE LINEAR REGULATOR  
1
FEATURES  
SUPPORTS DEFENSE, AEROSPACE AND  
MEDICAL APPLICATIONS  
Precision Negative Series Pass Voltage  
Regulation  
Controlled Baseline  
One Assembly/Test Site  
One Fabrication Site  
Available in S-Temp (–55°C/100°C)  
Temperature Range(1)  
0.2-V Dropout at 0.5 A  
Wide Input Voltage Range –3.2 V to –15 V  
Low Quiescent Current Irrespective of Load D  
Simple Logic Shutdown Interfacing  
Extended Product Life Cycle  
Extended Product-Change Notification  
Product Traceability  
–5 V, –12 V, and Adjustable Output  
2.5% Duty Cycle Short Circuit Protection  
(1) Additional temperature ranges are available – contact factory.  
D PACKAGE  
(FRONT VIEW)  
VOUTS  
VIN  
1
2
3
4
8
7
6
5
SD/CT  
VIN  
VIN  
VIN  
VOUT  
GND  
DESCRIPTION  
The UCC284-x family of negative linear-series pass regulators is tailored for low-dropout applications where  
low-quiescent power is important. Fabricated with a BCDMOS technology ideally suited for low input-to-output  
differential applications, the UCC284-x passes 0.5 A while requiring only 0.2 V of input-voltage headroom.  
Dropout voltage decreases linearly with output current, so that dropout at 50 mA is less than 20 mV.  
Quiescent current consumption for the device under normal (non-dropout) conditions is typically 200 µA. An  
integrated charge pump is internally enabled only when the device is operating near dropout with low VIN. This  
ensured that the device meets the dropout specifications even for maximum load current and a VIN of –3.2 V  
with only a modest increase in quiescent current. Quiescent current is always less than 360 µA, with the charge  
pump enabled. The quiescent current of the UCC284 does not increase with load current.  
Short-circuit current is internally limited. The device responds to a sustained overcurrent condition by turning off  
after a tON delay. The device then stays off for a period, tOFF, that is 40 times the tON delay. The device then  
begins pulsing on and off at the tON/tOFF duty cycle of 2.5%. This drastically reduces the power dissipation during  
short circuit such that heat sinking, if at all required, must only accommodate normal operation. An external  
capacitor sets the on time. The off time is always 40 times tON  
.
The UCC284-x can be shutdown to 45 µA (maximum) by pulling the SD/CT pin more positive than –0.7 V. To  
allow for simpler interfacing, the SD/CT pin may be pulled up to 6 V above the ground pin without turning on  
clamping diodes.  
Internal power dissipation is further controlled with thermal-overload protection circuitry. Thermal shutdown  
occurs if the junction temperature exceeds 140°C. The chip remains off until the temperature has dropped 20°C  
(TJ = 120°C).  
1
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.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2008, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  

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