UC1843A-DIE
www.ti.com
SLUSBN9 –JULY 2013
CURRENT-MODE PWM CONTROLLER
Check for Samples: UC1843A-DIE
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FEATURES
(1)
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Rad-Tolerant: 30 kRad (Si) TID
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Pulse-by-Pulse Current Limiting
Enhanced Load Response Characteristics
Optimized for Offline and DC-to-DC Converters
Low Start-Up Current
Undervoltage Lockout With Hysteresis
Double-Pulse Suppression
Trimmed Oscillator Discharge Current
Automatic Feed Forward Compensation
(1) Radiation tolerance is a typical value based upon initial device
qualification with dose rate = 10 mrad/sec. Radiation Lot
Acceptance Testing is available - contact factory for details.
High-Current Totem-Pole Output
Internally Trimmed Bandgap Reference
Low RO Error Amplifier
DESCRIPTION
The UC1843A-DIE is a pin for pin compatible improved version of the UC1843-DIE. Providing the necessary
features to control current-mode switched-mode power supplies.
ORDERING INFORMATION(1)
PACKAGE
DESIGNATOR
PRODUCT
PACKAGE
ORDERABLE PART NUMBER
PACKAGE QUANTITY
UC1843AVTD1
UC1843AVTD2
100
10
UC1843A
TD
Bare die in waffle pack(2)
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Processing is per the Texas Instruments space production baseline and is in compliance with the Texas Instruments Quality Control
System in effect at the time of manufacture. Electrical screening consists of DC parametric and functional testing at room temperature
only. Unless otherwise specified by Texas Instruments AC performance and performance over temperature is not warranted. Visual
Inspection is performed in accordance with MIL-STD-883 Test Method 2010 Condition B at 75X minimum.
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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 © 2013, 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.