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UC1846VTD1 Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza UC1846VTD1
Descripción Electrónicos  CURRENT-MODE PWM CONTROLLER
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UC1846VTD1 Datasheet(HTML) 1 Page - Texas Instruments

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UC1846-DIE
www.ti.com
SGLS409 – NOVEMBER 2012
CURRENT-MODE PWM CONTROLLER
1
FEATURES
Automatic Feed-Forward Compensation
Differential Current-Sense Amplifier With Wide
Common-Mode Range
Programmable Pulse-by-Pulse Current
Limiting
Double Pulse Suppression
Automatic Symmetry Correction in Push-Pull
Undervoltage Lockout
Configuration
Soft-Start Capability
Enhanced Load-Response Characteristics
Shutdown Terminal
Parallel Operation Capability for Modular
Power Systems
DESCRIPTION
The UC1846 control IC provides all of the necessary features to implement fixed-frequency, current-mode control
schemes, while maintaining a minimum external parts count. The superior performance of this technique can be
measured in improved line regulation, enhanced load-response characteristics, and a simpler, easier-to-design
control loop. Topological advantages include inherent pulse-by-pulse current-limiting capability, automatic
symmetry correction for push-pull converters, and the ability to parallel power modules, while maintaining equal
current sharing.
Protection circuitry includes built-in undervoltage lockout and programmable current limit, in addition to soft-start
capability. A shutdown function is also available, which can initiate either a complete shutdown with automatic
restart or latch the supply off.
Other features include fully latched operation, double pulse suppression and deadline adjust capability.
The UC1846 features low outputs in the OFF state.
ORDERING INFORMATION(1)
PACKAGE
PRODUCT
PACKAGE
ORDERABLE PART NUMBER
PACKAGE QUANTITY
DESIGNATOR
UC1846VTD1
100
UC1846
TD
Bare die in waffle pack(2)
UC1846VTD2
10
(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 commercial 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.
1
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 © 2012, 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.


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