UCC28C43 Status: ACTIVE

BiCMOS Low-Power Current Mode PWM Controller

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Datasheet

BiCMOS Current Mode PWM Controller (Rev. D) (ucc28c43.pdf, 623 KB)
13 Dec 2006 Download

	UCC28C43	UCC38C43
Topology	Boost, Flyback, Forward	Boost, Buck, Flyback, Forward
Control Method	Current Mode	Current Mode
Duty Cycle(Max)(%)	100	100
PWM Outputs(#)	1	1
Frequency(Max)(kHz)	1000	1000
UVLO Thresholds On/Off(V)	8.4/7.6	8.4/7.6
Pin/Package	8MSOP,8PDIP,8SOIC	8MSOP,8PDIP,8SOIC
Regulated Outputs(#)	1	1
	Samples	Samples
	Inventory	Inventory

Other qualified versions of UCC28C43

Version	Part Number	Definition
Enhanced Product	UCC28C43-EP	Supports Defense, Aerospace and Medical Applications

Customers Who Evaluated This Product Also Evaluated

UCC28C45: BiCMOS Low-Power Current Mode PWM Controller
UCC38C43: BiCMOS Low-Power Current Mode PWM Controller
TPS5430: 5.5V to 36V Input, 3-A Step Down Converter
UC3854: High Power Factor Preregulator
TPS54386: Dual 3A Non-Synchronous Buck Converter with Integrated High Side MOSFET, 600 kHz

Product Information

Features

Enhanced Replacement for UC3842A Family With Pin-to-Pin Compatibility
1-MHz Operation
50-µA Start-Up Current, 100-µA Maximum
Low Operating Current of 2.3 mA at 52 kHz
Fast 35-ns Cycle-by-Cycle Overcurrent Limiting
±1-A Peak Output Current
Rail-to-Rail Output Swings with 25-ns Rise and 20-ns Fall Times
±1% Initial Trimmed 2.5-V Error Amplifier Reference
Trimmed Oscillator Discharge Current
New Under Voltage Lockout Versions
MSOP-8 Package Minimizes Board Space
APPLICATIONS
- Switch-Mode Power Supplies
- dc-to-dc Converters
- Board Mount Power Modules

Description

UCC38C4x family is a high-performance current-mode PWM controller. It is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UC384xA family and UC384x family of PWM controllers. In addition, lower startup voltage versions of 7 V are offered as UCC38C40 and UCC38C41.

Providing necessary features to control fixed frequency, peak current-mode power supplies, this family offers the following performance advantages. The device offers high-frequency operation up to 1 MHz with low start-up and operating currents, thus minimizing start-up loss and low operating power consumption for improved efficiency. The device also features a very fast current-sense-to-output delay time of 35 ns and a ±1 A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.

The UCC38C4x family is offered in 8-pin packages, MSOP (DGK), SOIC (D) and PDIP (P).

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
UCC28C43D	ACTIVE	-40 to 105	0.95 \| 100u	SOIC (D) \| 8	View	75 \| TUBE
UCC28C43DG4	ACTIVE	-40 to 105	0.95 \| 100u	SOIC (D) \| 8	View	75 \| TUBE
UCC28C43DGK	ACTIVE	-40 to 105	0.95 \| 100u	MSOP (DGK) \| 8	View	80 \| TUBE
UCC28C43DGKG4	ACTIVE	-40 to 105	0.95 \| 100u	MSOP (DGK) \| 8	View	80 \| TUBE
UCC28C43DGKR	ACTIVE	-40 to 105	0.95 \| 100u	MSOP (DGK) \| 8	View	2500 \| LARGE T&R	Purchase Samples
UCC28C43DGKRG4	ACTIVE	-40 to 105	0.95 \| 100u	MSOP (DGK) \| 8	View	2500 \| LARGE T&R	Purchase Samples
UCC28C43DR	ACTIVE	-40 to 105	0.95 \| 100u	SOIC (D) \| 8	View	2500 \| LARGE T&R	Purchase Samples
UCC28C43DRG4	ACTIVE	-40 to 105	0.95 \| 100u	SOIC (D) \| 8	View	2500 \| LARGE T&R	Purchase Samples
UCC28C43P	ACTIVE	-40 to 105	0.95 \| 100u	PDIP (P) \| 8	View	50 \| TUBE
UCC28C43PG4	ACTIVE	-40 to 105	0.95 \| 100u	PDIP (P) \| 8	View	50 \| TUBE

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

	TI Inventory Status			Reported Distributor Inventory
UCC28C43D	As of 8:46 AM GMT, 20 Nov 2008			As of 8:46 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 18 Dec	4 Weeks	Americas	Arrow	676
					Avnet	>1k
					DigiKey	>1k
					Newark	>1k
					Rochester Electronics	46
				Asia	WPI	17
				Europe	Abacus Polar	75
					Arrow Northern Europe	100
					Arrow Southern Europe	150
					Avnet-SILICA	>1k
					Farnell	435
UCC28C43DG4	As of 8:46 AM GMT, 20 Nov 2008			As of 8:46 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 18 Dec	4 Weeks	Americas	Mouser Electronics	>1k
	0*		4 Weeks	Europe	EBV Elektronik	750
UCC28C43DGK	As of 8:46 AM GMT, 20 Nov 2008			As of 8:46 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	8120*		1 Weeks	Americas	Arrow	482
					Avnet	344
					DigiKey	12
					Mouser Electronics	335
					Rochester Electronics	>1k
				Asia	WPI	65
				Europe	Abacus Polar	630
					Avnet-SILICA	>1k
					EBV Elektronik	80
					Spoerle	240
UCC28C43DGKG4	As of 8:46 AM GMT, 20 Nov 2008			As of 8:46 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	8120*		1 Weeks	None Reported View Distributors
UCC28C43DGKR	As of 8:46 AM GMT, 20 Nov 2008			As of 8:46 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	1125 \| 5 Jan	8 Weeks	Americas	Rochester Electronics	>1k
	0*	>10k \| 8 Jan	8 Weeks
UCC28C43DGKRG4	As of 8:46 AM GMT, 20 Nov 2008			As of 8:46 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	1125 \| 5 Jan	8 Weeks	None Reported View Distributors
	0*	>10k \| 8 Jan	8 Weeks
UCC28C43DR	As of 8:46 AM GMT, 20 Nov 2008			As of 8:46 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 18 Dec	4 Weeks	Americas	Arrow	>1k
					Newark	844
					Rochester Electronics	>1k
UCC28C43DRG4	As of 8:46 AM GMT, 20 Nov 2008			As of 8:46 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 18 Dec	4 Weeks	None Reported View Distributors
UCC28C43P	As of 8:46 AM GMT, 20 Nov 2008			As of 8:46 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	5250*		1 Weeks	Americas	Arrow	300
					DigiKey	139
					Mouser Electronics	796
				Asia	WPI	79
				Europe	EBV Elektronik	25
UCC28C43PG4	As of 8:46 AM GMT, 20 Nov 2008			As of 8:46 AM GMT, 20 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	5250*		1 Weeks	Europe	EBV Elektronik	100
View all Distributors

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
UCC28C43D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
UCC28C43DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
UCC28C43DGK	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC28C43DGKG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC28C43DGKR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC28C43DGKRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC28C43DR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
UCC28C43DRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
UCC28C43P	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	View	View
UCC28C43PG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Datasheets

BiCMOS Current Mode PWM Controller (Rev. D) (ucc28c43.pdf, 623 KB)
13 Dec 2006 Download

Application Notes

UCC38C44 12-V Isolated Bias Supply (Rev. A) (slua274a.htm, 8 KB)
09 Oct 2008 Abstract
UCC38C42 25-W Forward Converter (slua276.htm, 8 KB)
06 Sep 2002 Abstract
Understanding Buck-Boost Power Stages in Switchmode Power Supplies (Rev. A) (slva059a.htm, 8 KB)
28 May 2002 Abstract
UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers (slua257.htm, 8 KB)
07 Feb 2002 Abstract
Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps (sloa044.htm, 8 KB)
23 Mar 2000 Abstract
DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802 (slua084.htm, 8 KB)
05 Sep 1999 Abstract
U-111, Practical Considerations in Current Mode Power Supplies (slua110.htm, 8 KB)
05 Sep 1999 Abstract

View Application Notes for PWM Power Supply Controllers

User Guides

UCC38C42 30-W Synchronous Buck Converter Reference Design (sluu143.htm, 8 KB)
04 Feb 2003 Abstract

View User Guides for PWM Power Supply Controllers

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UCC28C43 Status: ACTIVE

BiCMOS Low-Power Current Mode PWM Controller

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