Position: Home > DataSheet > Index U > UC3 Series > UC3543, UC3543DWG4, UC3543DWTR/81013

Low Cost Custom Prototype PCB Manufacturer

UC3543, UC3543DWG4, UC3543DWTR/81013

Table of contents:
Info of UC3543
Info of UC3543DWG4
Info of UC3543DWTR/81013

UC3543, UC3543DWG4, UC3543DWTR/81013 Selling Leads, Datasheet

MFG:Texas Instruments Category:Integrated Circuits (ICs) Package Cooled:DIP D/C:09+

UC3543, UC3543DWG4, UC3543DWTR/81013 Picture

UC3543, UC3543DWG4, UC3543DWTR/81013 Datasheet download

Five Points

Part Number: UC3543

Category: Integrated Circuits (ICs)

MFG: Texas Instruments

Package Cooled: DIP

D/C: 09+

Description: IC 2.5V PWR SUPPLY MON 16-SOIC

Attentive hint

Want to post a buying lead? If you are not a member yet, please select the specific/related part number first and then fill the quantity and your contact details in the "Request for Quotation Form" on the left, and then click "Send RFQ".Your buying lead can then be posted, and the reliable suppliers will quote via our online message system or other channels soon.

How to buy ?

How long will receive a response.

Top Sellers:

TOP

UC3543 General Description

The monolithic integrated circuits contain all the functions necessary to monitor and control the output of a ophisticated power supply system. Over-voltage (O.V.) sensing with provision to trigger an external SCR "crowbar" shutdown; an undervoltage (U.V.) circuit which can be used to monitor either the output or to sample the input line voltage; and a third op amp/comparator usable for current sensing (C.L.) are all included in this IC, together with an independent, accurate reference
generator.

Both over- and under-voltage sensing circuits can be externally programmed for minimum time duration of fault before triggering. All functions contain open collector outputs which can be used independently or wire-or'ed together, and although the SCR trigger is directly connected only to the over-voltage sensing circuit, it may be optionally activated by any of the other outputs, or from an external signal. The O.V. circuit also includes an optional latch and external reset capability.

The UC1544/2544/3544 devices have the added versatility of completely uncommitted inputs to the voltage sensing comparators so that levels less than 2.5V may be monitored by dividing down the internal reference voltage. The current sense circuit may be used with external compensation as a linear amplifier or as a highgain comparator. Although nominally set for zero input offset, a fixed threshold may be added with an external resistor. Instead of current limiting, this circuit may also be used as an additional voltage monitor.

The reference generator circuit is internally trimmed to eliminate the need for external potentiometers and the entire circuit may be powered directly from either the output being monitored or from a separate bias voltage.

UC3543 Maximum Ratings

Input Supply Voltage, V_IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..40V
Sense Inputs, Voltage Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to V_IN
SCR Trigger Current (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. -600mA
Indicator Output Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Indicator Output Sink Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50mA
Power Dissipation (Package Limitation). . . . . . . . . . . . . . . . . . . . . . 1000mW
Operating Temperature Range
UC1543, UC1544 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to +125°C
UC2543, UC2544 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -25°C to +85°C
UC3543, UC3544 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 0°C to +70°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . 65°C to +150°C

Note 1: At higher input voltages, a dissipation limiting resistor, RG, is required.
Note 2: Currents are positive-into, negative-out of the specified terminal. Consult Packaging section of Databook for thermal limitations and considerations of package.

UC3543 Features

` Includes Over-voltage, Under-voltage, And Current Sensing Circuits
` Internal 1% Accurate Reference
` Programmable Time Delays
` SCR "Crowbar" Drive Of 300mA
` Remote Activation Capability
` Optional Over-voltage Latch
` Uncommitted Comparator Inputs For Low Voltage Sensing (UC1544 Series Only)

UC3543 Connection Diagram

UC3543DWG4 Parameters

Technical/Catalog Information	UC3543DWG4
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
Output	Push-Pull, Totem Pole
Reset	Active Low
Package / Case	16-SOIC (7.5mm Width)
Packaging	Tube
Number of Voltages Monitored	1
Reset Timeout	Adjustable/Selectable
Type	Simple Reset/Power-On Reset
Voltage - Threshold	2.5V
Operating Temperature	0°C ~ 70°C
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	UC3543DWG4 UC3543DWG4

Hotspot Suppliers Product

Product List A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9

MT58L64L18CT-10

Price: 4-6 USD

MT58L64L18CT-10 TQFP100
DL-7140-211M

Price: 5-6.5 USD

DL-7140-211M laser tube
74LVC74APG

Price: 4-5 USD

74LVC74APG - IC FLIP FLOP D-Type POS-EDG DUAL 14TSSOP
CY28346ZI-2

Price: 6.5-8 USD

CYPRESS - Clock Synthesizer with Differential CPU Outputs
PI5V330QEX

Price: 0.284-0.286 USD

PI5V330QEX Pericom Multiplexer Switch ICs
BSM300GA120DN2

Price: 1-2 USD

IGBT power module, Single switch, 1200 V, Collector-emitter voltage, 430A
SVA150XG04TB

Price: 1-2 USD

a-Si TFT-LCD, NEC, 228.096Hmm, 560V
PC354N1

Price: 0.124-0.2 USD

PC354N1T - Mini-flat Package, AC Input Type Photocoupler - Sharp Electrionic Components
RL1210JR-070R22L

Price: 0.177-0.178 USD

RL1210JR51-XX-BL - Thick Film Chip Resistor Low Ohmic - TAITRON Components Incorporated
STPS140A

Price: 0.053-0.055 USD

STPS140A - POWER SCHOTTKY RECTIFIER - STMicroelectronics
STA013

Price: 1.45-1.5 USD

STA013 - MPEG 2.5 LAYER III AUDIO DECODER - STMicroelectronics
SMBJ5347B

Price: 0.073-0.075 USD

SMBJ5347B - 5 Watt Surface Mount Silicon Zener Diodes - Micro Commercial Components