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UCC3918DPTR PDF预览

UCC3918DPTR

更新时间： 2024-10-02 04:27:03
品牌 Logo 应用领域
德州仪器 - TI 光电二极管信息通信管理
页数 文件大小 规格书
11页 193K
描述
LOW ON-RESISTANCE HOT SWAP POWER MANAGER

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中文翻译

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UCC3918DPTR 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP, SOP16,.25针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：5.12可调阈值：NO
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：R-PDSO-G16
JESD-609代码：e4长度：9.9 mm
湿度敏感等级：2信道数量：1
功能数量：1端子数量：16
最高工作温度：70 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP16,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：260
电源：5 V认证状态：Not Qualified
座面最大高度：1.75 mm子类别：Power Management Circuits
最大供电电流 (Isup)：2 mA最大供电电压 (Vsup)：6 V
最小供电电压 (Vsup)：3 V标称供电电压 (Vsup)：5 V
表面贴装：YES技术：BICMOS
温度等级：COMMERCIAL端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL阈值电压标称：1.3
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.9 mm
Base Number Matches：1

UCC3918DPTR 数据手册

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SLUS384B – NOVEMBER 1999 – REVISED JUNE 2000  
DP PACKAGE  
(TOP VIEW)  
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Integrated 0.075-Ω Power MOSFET  
3 V to 6 V Operation  
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16  
15  
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External Analog Control of Fault Current  
from 0 A to 4 A  
VIN  
VIN  
VIN  
GND*  
GND*  
VOUT  
VOUT  
VOUT  
GND*  
GND*  
NC  
Independent Analog Control of Current  
Limit Up to 5 A  
Fast Overload Protection  
Unidirectional Switch  
FAULT  
SHTDWN  
IFAULT  
CT  
IMAX  
Minimal External Components  
1-µA I  
When Disabled  
Pin 5 serves as the lowest impedance to the electrical  
ground. Pins 4, 12, and 13, serve as heat sink/ground.  
These pins should be connected to large etch PCB areas  
to help dissipate heat.  
CC  
Programmable On Time  
Programmable Start Delay  
Fixed 3% Duty Cycle  
description  
The UCC3918 low on-resistance hot swap power manager provides complete power management, hot swap  
capability, and circuit breaker functions. The only components needed to operate the device, other than supply  
bypassing, are a timing capacitor, and two programming resistors. All control and housekeeping functions are  
integrated, and externally programmable. These include the fault current level, maximum output sourcing  
current, maximum fault time, and startup delay. In the event of a constant fault, the internal fixed 3% duty cycle  
ratio limits the average output power. The IFAULT pin allows linear programming of the fault level current from  
0 A to 4 A.  
Fast overload protection is accomplished by an additional overload comparator. Its threshold is internally set  
above the maximum sourcing current limit setting. In the event of a short circuit or extreme current condition,  
this comparator is tripped, shutting down the output. This function is needed since the maximum sourcing  
current limit loop has a finite bandwidth.  
When the output current is below the fault level, the output MOSFET is switched on with a nominal resistance  
of 0.075 Ω. When the output current exceeds the fault level or the maximum sourcing level, the output remains  
on, but the fault timer starts charging a capacitor connected to the CT pin (C ). Once C charges to a preset  
T
T
threshold, the switch is turned off, and remains off for 30 times the programmed fault time. When the output  
current reaches the maximum sourcing level, the MOSFET transitions from a switch to a constant current  
source.  
The UCC3918 is designed for unidirectional current flow, emulating an ideal diode in series with the power  
switch. This feature is particularly attractive in applications where many devices are powering a common bus,  
such as with SCSI termintation power (Termpwr). The UCC3918 can also be put into the sleep mode, drawing  
only 1 µA of supply current.  
Other features include an open-drain fault output indicator, thermal shutdown, undervoltage lockout, 3 V to 6 V  
operation, and a low thermal resistance small-outline power package.  
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 2000, Texas Instruments Incorporated  
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中文翻译

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UCC3918DPTR 替代型号

型号 品牌 替代类型 描述 数据表
UCC3918DP TI

完全替代

 LOW ON-RESISTANCE HOT SWAP POWER MANAGER

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