UCC3803 Status: ACTIVE

Low-Power BiCMOS Current-Mode PWM

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Datasheet

Low-Power BiCMOS Current-Mode PWM (Rev. C) (PDF 599 KB)
12 Jan 2005

	UCC1803	UCC2803	UCC2803-EP	UCC2803-Q1	UCC3803
Topology	Boost, Flyback, Forward	Boost, Flyback, Forward			Boost, Buck, Flyback, Forward
Control Method	Current Mode	Current Mode	Current Mode	Current Mode	Current Mode
Duty Cycle(Max)(%)	100	100	100	100	100
PWM Outputs(#)	1	1	1	1	1
Frequency(Max)(kHz)	1000	1000	1000	1000	1000
UVLO Thresholds On/Off(V)	4.1/3.6	4.1/3.6	4.1/3.6	4.1/3.6	4.1/3.6
Pin/Package	8CDIP	8PDIP, 8SOIC, 8TSSOP	8SOIC	8SOIC	8PDIP, 8SOIC, 8TSSOP
Regulated Outputs(#)	1	1	1	1	1
	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory	Inventory

Other qualified versions of UCC3803

Version	Part Number	Definition
Military	UCC1803	QML certified for Military and Defense Applications

Customers Who Evaluated This Product Also Evaluated

UC39431: Precision Adjustable Shunt Regulator

UC3714: Complementary Switch FET Drivers

Product Information

Features

100µA Typical Starting Supply Current
500µA Typical Operating Supply Current
Operation to 1MHz
Internal Soft Start
Internal Fault Soft Start
Internal Leading-Edge Blanking of the Current Sense Signal
1 Amp Totem-Pole Output
70ns Typical Response from Current-Sense to Gate Drive Output
1.5% Tolerance Voltage Reference
Same Pinout as UC3842 and UC3842A

Description

The UCC1800/1/2/3/4/5 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 power supplies with minimal parts count.

These devices have the same pin configuration as the UC1842/3/4/5 family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC1800/1/2/3/4/5 family offers a variety of package options, temperature range options, choice of maximum duty cycle, and choice of critical voltage levels. Lower reference parts such as the UCC1803 and UCC1805 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC1802 and UCC1804 make these ideal choices for use in off-line power supplies.

View All Description in Datasheet

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
UCC3803D	ACTIVE	0 to 70	1.75 \| 1ku	SOIC (D) \| 8	View	75 \| TUBE
UCC3803DG4	ACTIVE	0 to 70	1.75 \| 1ku	SOIC (D) \| 8	View	75 \| TUBE
UCC3803DTR	ACTIVE	0 to 70	1.45 \| 1ku	SOIC (D) \| 8	View	2500 \| LARGE T&R	Purchase Samples
UCC3803DTRG4	ACTIVE	0 to 70	1.45 \| 1ku	SOIC (D) \| 8	View	2500 \| LARGE T&R	Purchase Samples
UCC3803N	ACTIVE	0 to 70	1.45 \| 1ku	PDIP (P) \| 8	View	50 \| TUBE
UCC3803NG4	ACTIVE	0 to 70	1.45 \| 1ku	PDIP (P) \| 8	View	50 \| TUBE
UCC3803PW	ACTIVE	0 to 70	1.80 \| 1ku	TSSOP (PW) \| 8	View	150 \| TUBE
UCC3803PWG4	ACTIVE	0 to 70	1.80 \| 1ku	TSSOP (PW) \| 8	View	150 \| TUBE
UCC3803PWTR	ACTIVE	0 to 70	1.50 \| 1ku	TSSOP (PW) \| 8	View	2000 \| LARGE T&R	Purchase Samples
UCC3803PWTRG4	ACTIVE	0 to 70	1.50 \| 1ku	TSSOP (PW) \| 8	View	2000 \| LARGE T&R	Purchase Samples

* 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

Reported Distributor Inventory as of 9:49 AM GMT, 22 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksUCC3803D
Americas	Avnet	300
	Newark	26
	Rochester Electronics	83
Asia	WPI	92
Europe	Spoerle	150
TI Lead Time*: 20 WeeksUCC3803DG4
Americas	Rochester Electronics	25
Asia	Farnell Asia	5
TI Lead Time*: 20 WeeksUCC3803DTR
Europe	Avnet-SILICA	>1k
TI Lead Time*: 20 WeeksUCC3803DTRG4
None Reported View Distributors
TI Lead Time*: 20 WeeksUCC3803N
Americas	Avnet	201
Americas	Rochester Electronics	149
Asia	WPI	148
TI Lead Time*: 20 WeeksUCC3803NG4
None Reported View Distributors
TI Lead Time*: 20 WeeksUCC3803PW
Americas	Rochester Electronics	>1k
Worldwide	DigiKey	237
TI Lead Time*: 20 WeeksUCC3803PWG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksUCC3803PWTR
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksUCC3803PWTRG4
Worldwide	DigiKey	Available
View all Distributors

** 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
UCC3803D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
UCC3803DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
UCC3803DTR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
UCC3803DTRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
UCC3803N	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	View	View
UCC3803NG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	View	View
UCC3803PW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC3803PWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC3803PWTR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
UCC3803PWTRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	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

Most useful technical documents for UCC3803

Simulation Models

PSpice Model
- UCC3803 PSpice Transient Model (ZIP, 121 KB) 151 views
  07 Jan 2009
TINA-TI Reference Design
- UCC3803 TINA-TI Transient Steady-State Ref Design (TSC, 32 KB) 61 views
  07 Jan 2009
- UCC3803 TINA-TI Transient Start-Up Reference Design (TSC, 40 KB) 87 views
  07 Jan 2009

Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
UC39431	Precision Adjustable Shunt Regulator	POWER SUPPLY SUPPORT-FEEDBACK SIGNAL GENERATORS	TI customers also evaluated this product.
UC3714	Complementary Switch FET Drivers	AC/DC AND DC/DC POWER SUPPLIES-MOSFET DRIVERS	TI customers also evaluated this product.

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UCC3803 Status: ACTIVE

Low-Power BiCMOS Current-Mode PWM

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