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UCC3913DR PDF预览

UCC3913DR

更新时间： 2024-11-20 20:44:39
品牌 Logo 应用领域
德州仪器 - TI 信息通信管理光电二极管
页数 文件大小 规格书
21页 691K
描述
1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, PLASTIC, MS-012AA, SOIC-8

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中文翻译

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UCC3913DR 技术参数

生命周期：Obsolete零件包装代码：SOIC
包装说明：SOP, SOP8,.25针数：8
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.71
可调阈值：YES模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：R-PDSO-G8长度：4.9 mm
信道数量：1功能数量：1
端子数量：8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：SOP8,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
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)：10.5 V最小供电电压 (Vsup)：8.5 V
标称供电电压 (Vsup)：9.5 V表面贴装：YES
技术：BICMOS温度等级：COMMERCIAL
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL宽度：3.9 mm
Base Number Matches：1

UCC3913DR 数据手册

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ꢀ ꢁꢁ ꢂꢃ ꢄꢅ  
ꢀ ꢁꢁ ꢅꢃ ꢄꢅ  
SLUS274A – JANUARY 1999 – REVISED APRIL 2003  
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FEATURES  
DESCRIPTION  
D
D
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D
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Precision Fault Threshold  
The UCCx913 family of negative voltage circuit  
breakers provides complete power management,  
hot-swap, and fault handling capability. The  
device is referenced to the negative input voltage  
and is driven through an external resistor  
connected to ground, which is essentially a  
current drive as opposed to the traditional voltage  
drive. The on-board 10-V shunt regulator protects  
the device from excess voltage and serves as a  
reference for programming the maximum  
allowable output sourcing current during a fault. In  
the event of a constant fault, the internal timer  
limits the on-time from less than 0.1% to a  
maximum of 3%. The duty cycle modulates  
depending on the current into the PL pin, which is  
a function of the voltage across the FET, and limits  
average power dissipation in the FET. The fault  
level is fixed at 50 mV across the current-sense  
resistor to minimize total dropout. The fault current  
level is set with an external current sense resistor.  
The maximum allowable sourcing current is  
programmed with a voltage divider from VDD to  
generate a fixed voltage on the IMAX pin. The  
current level, when the output appears as a  
Programmable Average Power Limiting  
Programmable Linear Current Control  
Programmable Overcurrent Limit  
Programmable Fault Time  
Fault Output Indicator  
Shutdown Control  
Undervoltage Lockout  
8-Pin SOIC  
APPLICATIONS  
D
D
D
–48-V Distributed Power Systems  
Central Office Switching  
Wireless Base Stations  
SIMPLIFIED APPLICATION DIAGRAM  
R
VDD  
R1  
DC/DC  
Converter  
or Load  
3
current source, is equal to V  
/R  
. If  
IMAX SENSE  
R
PL  
desired, a controlled current startup can be  
programmed with a capacitor on the IMAX pin.  
Power  
Limiting  
8
When the output current is below the fault level,  
the output device is switched on. When the output  
current exceeds the fault level, but is less than the  
maximum sourcing level programmed by the  
IMAX pin, the output remains switched on, and the  
fault timer starts charging CT. Once CT charges to  
2.5 V, the output device is turned off and performs  
a retry some time later. When the output current  
reaches the maximum sourcing current level, the  
output appears as a current source, limiting the  
output current to the set value defined by IMAX.  
M1  
1
2
Current  
Control  
7
6
5
Fault  
Protection  
and  
R
S
Timer  
C
VDD  
UCC3913  
4
R2  
C
T
Other features of the UCCx913 family include  
undervoltage lockout, and 8-pin small outline  
(SOIC) and dual-in-line (DIP) packages.  
UDG–03059  
–VIN  
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Copyright 1999 – 2003, Texas Instruments Incorporated  
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ꢝ ꢡ ꢞ ꢝꢖ ꢗꢫ ꢙꢘ ꢜ ꢤꢤ ꢢꢜ ꢚ ꢜ ꢛ ꢡ ꢝ ꢡ ꢚ ꢞ ꢦ  
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www.ti.com  
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