Home Power management AC/DC & DC/DC controllers (external FET)
Home
Power management
AC/DC & DC/DC controllers (external FET)

UCC1803

ACTIVE

Low-Power BiCMOS Current-Mode PWM

Order now
Data sheet

UCC1803

ACTIVE
Data sheet Order now

Product details

Operating temperature range (°C) -55 to 125 Control mode Current Topology Boost, Flyback, Forward Rating Military Features Error amplifier, Fixed frequency, Leading edge blanking, Soft start Duty cycle (max) (%) 100
Operating temperature range (°C) -55 to 125 Control mode Current Topology Boost, Flyback, Forward Rating Military Features Error amplifier, Fixed frequency, Leading edge blanking, Soft start Duty cycle (max) (%) 100
CDIP (JG) 8 64.032 mm² 9.6 x 6.67
  • 100-µA typical starting supply current
  • 500-µA typical operating supply current
  • Operation up to 1 MHz
  • Internal soft start
  • Internal fault soft start
  • Internal leading-edge blanking of the current sense signal
  • 1-A totem-pole output
  • 70-ns typical response from current-sense to gate drive output
  • 1.5% tolerance voltage reference
  • Same pinout as UC3842 and UC3842A
  • 100-µA typical starting supply current
  • 500-µA typical operating supply current
  • Operation up to 1 MHz
  • Internal soft start
  • Internal fault soft start
  • Internal leading-edge blanking of the current sense signal
  • 1-A totem-pole output
  • 70-ns typical response from current-sense to gate drive output
  • 1.5% tolerance voltage reference
  • Same pinout as UC3842 and UC3842A

The UCC280x family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching mode power supplies with minimal parts count.

These devices have the same pin configuration as the UCx84x family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC280x family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching mode power supplies with minimal parts count.

These devices have the same pin configuration as the UCx84x family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.
filter Find other AC/DC & DC/DC controllers (external FET)
Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
UCC2800-EP ACTIVE Enhanced Product Low-Power Bicmos Current-Mode Pwm Enhanced product upgrade to BiCMOS

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 14
Type Title Date
* Data sheet UCC280x Low-Power BiCMOS Current-Mode PWM Controllers datasheet (Rev. G) PDF | HTML 12 May 2020
* SMD UCC1803 SMD 5962-94513 21 Jun 2016
Application note Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps (Rev. A) PDF | HTML 11 Jun 2021
Application note Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) 12 Mar 2019
Application note UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers 07 Feb 2002
Application note DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802 05 Sep 1999
Application note DN-43 Simple Techniques to Generate a Negative Voltage Bias Supply 05 Sep 1999
Application note DN-46 Highly Efficient Low Power DC to DC Inverter Converts +5V Input to -3V Out 05 Sep 1999
Application note DN-48 Versatile Low Power SEPIC Converter Accepts Wide Input Voltage Range 05 Sep 1999
Application note DN-54 Innovative Buck Regulator Uses High Side N-Channel Switch Without Complex 05 Sep 1999
Application note DN-56A, Single Switch Flyback Circuit Converts + 5 V to +/- 12 V for RS-232/422 05 Sep 1999
Application note DN-65 Considerations in Powering BiCMOS ICs 05 Sep 1999
Application note U-111, Practical Considerations in Current Mode Power Supplies 05 Sep 1999
Application note U-133A UCC3800/1/2/3/4/5 BiCMOS Current Mode Control IC's 05 Sep 1999

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

UCC3803 PSpice Transient Model (Rev. B)

SLUM053B.ZIP (91 KB) - PSpice Model
Download
Simulation model

UCC3803 TINA-TI Transient Spice Model

SLUM219.ZIP (28 KB) - TINA-TI Spice Model
Download
Simulation model

UCC3803 TINA-TI Transient Start-Up Reference Design (Rev. A)

SLUM051A.TSC (195 KB) - TINA-TI Reference Design
Download
Simulation model

UCC3803 TINA-TI Transient Steady-State Ref Design (Rev. A)

SLUM052A.TSC (152 KB) - TINA-TI Reference Design
Download
Simulation model

UCCx803 & UCCx813-3 Unencrypted PSpice Transient Model

SLUM511.ZIP (6 KB) - PSpice Model
Download
Package Pins CAD symbols, footprints & 3D models
CDIP (JG) 8 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos