Texas Instruments UCC28C4x-EP BiCMOS Low-Power Current-Mode PWM Controllers Data Manual
Summary
These advanced UCC28C4x PWM controllers are ideal for engineers developing high-efficiency Switch Mode Power Supplies and DC-to-DC converters. This robust BiCMOS family offers powerful functionality, including ultra-low operating currents and extremely fast 35 ns current sense delay. With ±1 A output capability and rail-to-rail swings, these controllers deliver superior performance over wide temperature ranges (-55°C to 125°C), ensuring reliable power management in demanding applications.
Page 1 Text Content
UCC28C4x-EP
Bi CMOS LOW-POWER CURRENT-MODE PWM CONTROLLERS
www.ti.com
SGLS352B–DECEMBER 2006–REVISED MAY
FEATURES Low Operating Current of 2.3 m A at k Hz
Controlled Baseline Fast ns Cycle-by-Cycle Overcurrent
Limiting–
One Assembly/Test Site, One Fabrication
Site ±1 Peak Output Current
Extended Temperature Performance of Rail-to-Rail Output Swings With ns Rise
–55°C to 125°C and ns Fall Times
Enhanced Diminishing Manufacturing Sources ±1% Initial Trimmed 2.5 Error Amplifier
(DMS) Support Reference
Enhanced Product-Change Notification Trimmed Oscillator Discharge Current
Qualification Pedigree New Undervoltage Lockout Versions
Enhanced Replacements for UC2842A Family MSOP-8 Package Minimizes Board Space
With Pin-to-Pin Compatibility
APPLICATIONS
MHz Operation
Switch Mode Power Supplies•
µA Standby Current, µA Maximum
DC-to-DC Converters(1)
Component qualification in accordance with JEDEC and
industry standards to ensure reliable operation over an Board Mount Power Modules
extended temperature range. This includes, but is not limited
to, Highly Accelerated Stress Test (HAST) or biased 85/85,
temperature cycle, autoclave or unbiased HAST,
electromigration, bond intermetallic life, and mold compound
life. Such qualification testing should not be viewed as
justifying use of this component beyond specified
performance and environmental limits.
DESCRIPTION
The UCC28C4x family are high performance current mode PWM controllers. They are enhanced Bi CMOS
versions with pin-for-pin compatibility to the industry standard UC284x A family and UC284x family of PWM
controllers. In addition, lower startup voltage versions of are offered as UCC28C40 and UCC28C41.
Providing necessary features to control fixed frequency, peak current mode power supplies, this family offers
several performance advantages. These devices offer high frequency operation up to MHz with low start up
and operating currents, thus minimizing start up loss and low operating power consumption for improved
efficiency. The devices also feature fast current sense to output delay time of ns, and ±1 peak output
current capability with improved rise and fall times for driving large external MOSFETs directly.
The UCC28C4x family is offered in 8-pin package SOIC (D).
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 2006–2007, 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.
Page Summary Contents For Texas Instruments UCC28C4x-EP BiCMOS Low-Power Current-Mode PWM Controllers Data Manual
Manual Details
| Brand | Texas Instruments |
|---|---|
| Pages | 19 |
| File Size | 310.10 KB |
| Published | June 16, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
What operating current does UCC28C4x draw?
2.3 mA at 52 kHz
Is it compatible with older PWM controllers?
Pin-to-pin compatible with UC284xA family
Which applications use this PWM controller?
Switch mode power supplies, DC-to-DC converters