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UCC3928

更新时间： 2024-11-08 04:27:03
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德州仪器 - TI /
页数 文件大小 规格书
10页 148K
描述
HIGH-VOLTAGE HOT-SWAP POWER MANAGER

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UCC3928 数据手册

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SLUS471 – NOVEMBER 2000  
PW PACKAGE  
(TOP VIEW)  
D
Wide Supply Range ±20 V to ±100 V  
D
Smooth Output Ramping Using Linear  
Current Amplifier  
1
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8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
PG1  
PG2  
PG3  
PG4  
PG5  
–VIN  
UVLO  
SEQTIME  
REF  
DRAINSENS  
OLVO  
D
Undervoltage and Overvoltage Shutdown  
D
Sequenced Open-Drain Outputs for Five  
DC-To-DC Converters  
D
D
D
Open-Drain Fault Output  
FAULT  
ON Input Referenced to Positive Supply  
(UCC3923)  
FLTTIME-  
GATE  
GND  
ON  
ISENS  
IRAMP  
INSB  
ON Input referenced to Negative Supply  
(possible alternative version)  
INSA  
D
Dual Insertion Detection Inputs  
D
Electrostatic-Discharge Protection  
– Human-Body-Model 2 kV  
– Machine Model 200 V  
PACKAGE  
(TOP VIEW)  
D OR P PACKAGE  
(TOP VIEW)  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
FAULT  
FLTTIME  
GATE  
GND  
INSA  
INSB  
IRAMP  
–VIN  
UVLO  
PG  
REF  
DRAINSENS  
ON  
FAULT  
FLTTIME  
GATE  
–VIN  
1
2
3
4
8
7
6
5
ON  
ISENS  
IRAMP  
GND  
8
ISENS  
description  
The UCC3923 family of devices are Hot-Swap Power Managers for use with negative power supplies. These  
devices are optimized for use in systems with nominal –48-V supplies, but are fully functional over a supply  
range of –20 V to –200 V. These devices can be used both on plug-in cards and on back-planes to limit inrush  
current, control load turnon and turnoff, report faults, isolate faulty loads, and sequence downstream dc-to-dc  
converters.  
The UCC3923 offers the basic features of controlled turnon, load current ramping, and logic output of fault status  
in a tiny 8-pin package. The UCC3924 adds undervoltage protection, two insertion detection pins, power-good  
sensing, one output for downstream converter enabling, and a reference for cascoding, in a 14-pin package.  
The UCC3925 has all of the previously noted features plus overvoltage protection and supply sequencing for  
up to five downstream converters in a 20-pin package.  
AVAILABLE OPTIONS  
†
PACKAGED DEVICES  
TSSOP–14  
T
ENABLE  
A
TSSOP–8  
UCC3923  
UCC3926  
TSSOP–20  
UCC39235  
UCC3928  
Active high  
Active low  
UCC3924  
–40_C to 85__C  
UCC3927  
†
All packages are available left end taped and reeled. Add an R suffix to the device type (e.g.,  
UCC3923PWPR) to order quantities of 2000 devices per reel.  
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.  
Copyright 2000, Texas Instruments Incorporated  
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...10

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