Datasheet > UC1903_16

UC1903_16

更新时间： 2024-11-15 02:58:47

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
16页	808K
描述
Quad Supply and Line Monitor

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UC1903_16 数据手册

UC1903

UC2903

UC3903

www.ti.com ........................................................................................................................................ SLUS233A–OCTOBER 1999–REVISED SEPTEMBER 2008

Quad Supply and Line Monitor

FEATURES

DESCRIPTION

•

Inputs for Monitoring up to Four Separate

Supply Voltage Levels

The UC1903 family of quad supply and line monitor

integrated circuits will respond to under- and

over-voltage conditions on up to four continuously

monitored voltage levels. An internal op-amp inverter

allows at least one of these levels to be negative. A

separate line/switcher sense input is available to

provide early warning of line or other power source

failures.

Internal Inverter for Sensing a Negative Supply

Voltage

Line/Switch Sense Input for Early Power

Source Failure Warning

Programmable Under- and Over-Voltage Fault

Thresholds with Proportional Hysteresis

The fault window adjustment circuit on these devices

provides easy programming of under- and

over-voltage thresholds. The thresholds, centered

around a precision 2.5-V reference, have an input

hysteresis that scales with the window width for

precise, glitch-free operation. A reference output pin

allows the sense input fault windows to be scaled

independently using simple resistive dividers.

•

A Precision 2.5-V Reference

General Purpose Op-Amp for Auxiliary Use

Three High Current, >3 0mA, Open-Collector

Outputs Indicate Over-Voltage, Under-Voltage

and Power OK Conditions

•

8-V to 40-V Supply Operation with 7-mA

Stand-By Current

The three open collector outputs on these devices

sink in excess of 30 mA of load current when active.

The under- and over-voltage outputs respond after

separate, user defined, delays to respective fault

conditions. The third output is active during any fault

condition including under- and over-voltage,

line/switcher faults, and input supply under-voltage.

The off state of this output indicates a "power OK"

situation.

BLOCK DIAGRAM

Note: Pin numbers refer to J, N and DW packages.

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.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...16

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与UC1903_16相关器件

型号	品牌	获取价格	描述	数据表
UC1903DW	ETC	获取价格	Industrial Control IC
UC1903DWTR	ETC	获取价格	Industrial Control IC
UC1903J	TI	获取价格	Quad Supply and Line Monitor
UC1903J883B	TI	获取价格	Quad Supply and Line Monitor
UC1903L	TI	获取价格	Quad Supply and Line Monitor
UC1903L883B	TI	获取价格	Quad Supply and Line Monitor
UC1903N	TI	获取价格	Quad Supply and Line Monitor
UC1903Q	ETC	获取价格	Industrial Control IC
UC1903QTR	ETC	获取价格	Industrial Control IC
UC1904	TI	获取价格	Precision Quad Supply and Line Monitor

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