Electronic Components Datasheet Search |
|
UC2543J Datasheet(PDF) 1 Page - Texas Instruments |
|
|
UC2543J Datasheet(HTML) 1 Page - Texas Instruments |
1 / 20 page www.ti.com FEATURES DESCRIPTION UC1543 ,, UC1544 UC2543, UC2544 UC3543, UC3544 SLUS188A – APRIL 1997 – REVISED FEBRUARY 2007 Power Supply Supervisory Circuit Both over- and under-voltage sensing circuits can be externally programmed for minimum time duration of • Includes Over-Voltage, Under-Voltage, and fault before triggering. All functions contain open Current Sensing Circuits collector outputs which can be used independently or • Internal 1% Accurate Reference wire-or’ed together, and although the SCR trigger is directly connected only to the over-voltage sensing • Programmable Time Delays circuit, it may be optionally activated by any of the • SCR “Crowbar” Drive of 300 mA other outputs, or from an external signal. The O.V. • Remote Activation Capability circuit also includes an optional latch and external reset capability. • Optional Over-Voltage Latch • Uncommitted Comparator Inputs for Low The UC1544/2544/3544 devices have the added Voltage Sensing (UC1544 Series Only) versatility of completely uncommitted inputs to the voltage sensing comparators so that levels less than 2.5 V may be monitored by dividing down the internal reference voltage. The current sense circuit may be The monolithic integrated circuits contain all the used with external compensation as a linear amplifier functions necessary to monitor and control the output or as a highgain comparator. Although nominally set of a sophisticated power supply system. for zero input offset, a fixed threshold may be added Over-voltage (O.V.) sensing with provision to trigger with an external resistor. Instead of current limiting, an external SCR “crowbar” shutdown; an this circuit may also be used as an additional voltage undervoltage (U.V.) circuit which can be used to monitor. monitor either the output or to sample the input line The reference generator circuit is internally trimmed voltage; and a third op amp/comparator usable for to eliminate the need for external potentiometers and current sensing (C.L.) are all included in this device, the entire circuit may be powered directly from either together with an independent, accurate reference the output being monitored or from a separate bias generator. voltage. BLOCK DIAGRAM NOTE: For each terminal, first number refers to 1543 series, second to 1544 series. *On 1543 series, this function is internally connected to VREF. 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. Copyright © 1997–2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Similar Part No. - UC2543J |
|
Similar Description - UC2543J |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |