UCC1804

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Low-Power BiCMOS Current-Mode PWM

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Data sheet

document-pdfAcrobat UCC280x Low-Power BiCMOS Current-Mode PWM Controllers datasheet (Rev. G) PDF | HTML

UCC1804

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Data sheet

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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) (%)

50

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) (%)

50

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.

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UCC2800-EP

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Technical documentation

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	Type	Title		Date
*	Data sheet	UCC280x Low-Power BiCMOS Current-Mode PWM Controllers datasheet (Rev. G)	PDF \| HTML	12 May 2020
*	SMD	UCC1804 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