UCC3921

更新时间： 2024-11-19 22:39:59

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
11页	498K
描述
Latchable Negative Floating Hot Swap Power Manager

阅读下载

中文翻译

获取价格

数据手册
替代型号

如果您发现信息不准确，欢迎纠错

UCC3921 数据手册

UCC1921

UCC2921

UCC3921

Latchable Negative Floating Hot Swap Power Manager

FEATURES

DESCRIPTION

• Precision Fault Threshold

The UCC3921 family of negative floating hot swap power managers pro-

vides complete power management, hot swap, and fault handling capa-

bility. The IC is referenced to the negative input voltage and is powered

through an external resistor connected to ground, which is essentially a

current drive as opposed to the traditional voltage drive. The onboard

10V shunt regulator protects the IC from excess voltage and serves as a

reference for programming the maximum allowable output sourcing cur-

rent during a fault. All control and housekeeping functions are integrated

and externally programmable. These include the fault current level, maxi-

mum output sourcing current, maximum fault time, selection of Retry or

Latched mode, soft start time, and average power limiting. In the event of

a constant fault, the internal timer will limit the on time from less than

0.1% to a maximum of 3% duty cycle. The duty cycle modulation de-

pends on the current into PL, which is a function of the voltage across

the FET, thus limiting average power dissipation in the FET. The fault

level is fixed at 50mV across the current sense amplifier to minimize total

• Programmable:

Average Power Limiting, Linear

Current Control, Overcurrent Limit

and Fault Time

• Fault Output Indication Signal

• Automatic Retry Mode or Latched

Operation Mode

• Shutdown Control

• Undervoltage Lockout

• 250µs Glitch Filter on the SDFLTCH

• 8-Pin DIL and SOIC

(continued)

BLOCK DIAGRAM

UDG-99052

3/98

12 3 4 5 6 7...11

中文翻译

下载PDF

UCC3921 替代型号

型号	品牌	替代类型	描述	数据表
UCC2921	TI	功能相似	Latchable Negative Floating Hot Swap Power Manager

与UCC3921相关器件

型号	品牌	获取价格	描述	数据表
UCC3921D	TI	获取价格	Latchable Negative Floating Hot Swap Power Manager
UCC3921D/81143	TI	获取价格	Latchable Negative Floating Hot Swap Power Manager
UCC3921D/81143G4	TI	获取价格	Latchable Negative Floating Hot Swap Power Manager
UCC3921DG4	TI	获取价格	Latchable Negative Floating Hot Swap Power Manager
UCC3921DTR	TI	获取价格	Latchable Negative Floating Hot Swap Power Manager
UCC3921DTR/81143	TI	获取价格	Latchable Negative Floating Hot Swap Power Manager
UCC3921DTR/81143G4	TI	获取价格	Latchable Negative Floating Hot Swap Power Manager
UCC3921DTRG4	TI	获取价格	Latchable Negative Floating Hot Swap Power Manager
UCC3921J	TI	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, CDIP8
UCC3921N	TI	获取价格	IC POWER MANAGER