TL1451A Status: ACTIVE

Dual Channel Controller with Wide Input Voltage Range

Alert me about changes<br/>to this product

Alert me about changes
to this product

Datasheet

Dual Pulse-Width-Modulation Control Circuits (Rev. E) (PDF 1064 KB) 17156 views
13 Mar 2002

	TL1451A
Topology	Buck, Boost, Flyback
Vin(Min)(V)	3.6
Vin(Max)(V)	50
Vout(Min)(V)	1
Vout(Max)(V)	50
Regulated Outputs(#)	2
Iout(Max)(A)	3
Switching Frequency(Max)(kHz)	500
Iq(Typ)(mA)	1.7
Pin/Package	16PDIP, 16SO, 16SOIC, 16SSOP, 16TSSOP
Thermal Shutdown	No
Vout2(Min)(V)	1
Vout2(Max)(V)	50
Iout2(A)	3
Rating	Catalog
Duty Cycle(Max)(%)	100
Vdo(Typ)(mV)	200
	Samples
	Inventory

Other qualified versions of TL1451A

Version	Part Number	Definition
Automotive	TL1451A-Q1	Q100 devices qualified for high-reliability automotive applications targeting zero defects
Enhanced Product	TL1451A-EP	Supports Defense, Aerospace and Medical Applications
Military	TL1451AM	QML certified for Military and Defense Applications

Customers Who Evaluated This Product Also Evaluated

TPS40200: Wide Input Non-Synchronous Buck DC/DC Controller
TL5001: PWM Controller with Wide Input Range
TL1451: Dual Pulse-Width-Modulation Control Circuit
TPS3809K33: 3-Pin Supply Voltage Supervisor
TPS62046: 3.3-V Output, 1.2-A, 95% Efficient Step-Down Converter, 18uA, MSOP-10, QFN-10
TPS63002: 96% Buck-Boost Converter with 1.7A Current Switches, 5V fixed Output voltage in 3x3 QFN

Product Information

Features

Complete PWM Power Control Circuitry
Completely Synchronized Operation
Internal Undervoltage Lockout Protection
Wide Supply Voltage Range
Internal Short-Circuit Protection
Oscillator Frequency...500 kHz Max
Variable Dead Time Provides Control Over Total Range
Internal Regulator Provides a Stable 2.5-V Reference Supply
Available in Q-Temp Automotive
HighRel Automotive Applications
Configuration Control / Print Support
Qualification to Automotive Standards

Description

The TL1451A incorporates on a single monolithic chip all the functions required in the construction of two pulse-width-modulation (PWM) control circuits. Designed primarily for power-supply control, the TL1451A contains an on-chip 2.5-V regulator, two error amplifiers, an adjustable oscillator, two dead-time comparators, undervoltage lockout circuitry, and dual common-emitter output transistor circuits.

The uncommitted output transistors provide common-emitter output capability for each controller. The internal amplifiers exhibit a common-mode voltage range from 1.04 V to 1.45 V. The dead-time control (DTC) comparator has no offset unless externally altered and can provide 0% to 100% dead time. The on-chip oscillator can be operated by terminating RT and CT. During low V_CC conditions, the undervoltage lockout control circuit feature locks the outputs off until the internal circuitry is operational.

The TL1451AC is characterized for operation from -20°C to 85°C. The TL1451AQ is characterized for operation from -40°C to 125°C. The TL1451AM is characterized for operation from -55°C to 125°C.

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
TL1451ACD	ACTIVE	-20 to 85	1.05 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE
TL1451ACDBLE	NRND	-20 to 85		SSOP (DB) \| 16	View		Not Available
TL1451ACDBR	ACTIVE	-20 to 85	0.95 \| 1ku	SSOP (DB) \| 16	View	2000 \| LARGE T&R
TL1451ACDBRG4	ACTIVE	-20 to 85	0.95 \| 1ku	SSOP (DB) \| 16	View	2000 \| LARGE T&R
TL1451ACDG4	ACTIVE	-20 to 85	1.05 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE
TL1451ACDR	ACTIVE	-20 to 85	0.95 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Purchase Samples
TL1451ACDRG4	ACTIVE	-20 to 85	0.95 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Purchase Samples
TL1451ACN	ACTIVE	-20 to 85	1.05 \| 1ku	PDIP (N) \| 16	View	25 \| TUBE
TL1451ACNE4	ACTIVE	-20 to 85	1.05 \| 1ku	PDIP (N) \| 16	View	25 \| TUBE
TL1451ACNSR	ACTIVE	-20 to 85	0.95 \| 1ku	SO (NS) \| 16	View	2000 \| LARGE T&R
TL1451ACNSRG4	ACTIVE	-20 to 85	0.95 \| 1ku	SO (NS) \| 16	View	2000 \| LARGE T&R
TL1451ACPW	ACTIVE	-20 to 85	1.05 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
TL1451ACPWG4	ACTIVE	-20 to 85	1.05 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
TL1451ACPWLE	OBSOLETE	-20 to 85		TSSOP (PW) \| 16	View			Not Available
TL1451ACPWR	ACTIVE	-20 to 85	0.95 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R
TL1451ACPWRG4	ACTIVE	-20 to 85	0.95 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R
TL1451AQD	ACTIVE	-40 to 125	1.10 \| 1ku	SOIC (D) \| 16	View	40
TL1451AQDG4	ACTIVE		1.10 \| 1ku	SOIC (D) \| 16	View	40	Purchase Samples
TL1451AQDR	ACTIVE	-40 to 125	1.10 \| 1ku	SOIC (D) \| 16	View	2500	Purchase Samples
TL1451AQDRG4	ACTIVE		1.10 \| 1ku	SOIC (D) \| 16	View	2500	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

	TI Inventory Status		Reported Distributor Inventory
TL1451ACD	As of 9:22 AM GMT, 03 Jul 2009		As of 9:22 AM GMT, 03 Jul 2009
	Lead Time		Region	Company	In Stock	Purchase
	4 Weeks		Americas	Arrow	260
				Avnet	393
				DigiKey	262
				Mouser Electronics	17
				Newark	164
				Rochester Electronics	>1k
			Asia	WPI	73
			Europe	EBV Elektronik	>1k
			Europe	Farnell	646
TL1451ACDBR	As of 9:22 AM GMT, 03 Jul 2009		As of 9:22 AM GMT, 03 Jul 2009
	Lead Time		Region	Company	In Stock	Purchase
	8 Weeks		Americas	Avnet	>1k
				DigiKey	>1k
				Rochester Electronics	>1k
TL1451ACDBRG4	As of 9:22 AM GMT, 03 Jul 2009		As of 9:22 AM GMT, 03 Jul 2009
	Lead Time		Region	Company	In Stock	Purchase
	8 Weeks		Americas	DigiKey	Available
TL1451ACDG4	As of 9:22 AM GMT, 03 Jul 2009		As of 9:22 AM GMT, 03 Jul 2009
	Lead Time		Region	Company	In Stock	Purchase
	4 Weeks		Americas	DigiKey	Available
TL1451ACDR	As of 9:22 AM GMT, 03 Jul 2009		As of 9:22 AM GMT, 03 Jul 2009
	Lead Time		Region	Company	In Stock	Purchase
	4 Weeks		Americas	Arrow	>1k
				DigiKey	Available
				Rochester Electronics	>1k
TL1451ACDRG4	As of 9:22 AM GMT, 03 Jul 2009		As of 9:22 AM GMT, 03 Jul 2009
	Lead Time		Region	Company	In Stock	Purchase
	4 Weeks		Americas	DigiKey	Available
TL1451ACN	As of 9:22 AM GMT, 03 Jul 2009		As of 9:22 AM GMT, 03 Jul 2009
	Lead Time		Region	Company	In Stock	Purchase
	6 Weeks		Americas	DigiKey	672
				Mouser Electronics	541
				Newark	148
				Rochester Electronics	>1k
			Asia	WPI	874
			Europe	Avnet-SILICA	25
				EBV Elektronik	50
				Farnell	125
				Spoerle	450
TL1451ACNE4	As of 9:22 AM GMT, 03 Jul 2009		As of 9:22 AM GMT, 03 Jul 2009
	Lead Time		Region	Company	In Stock	Purchase
	6 Weeks		Americas	DigiKey	Available
TL1451ACNSR	As of 9:22 AM GMT, 03 Jul 2009		As of 9:22 AM GMT, 03 Jul 2009
	Lead Time		Region	Company	In Stock	Purchase
	10 Weeks		Americas	DigiKey	>1k
			Americas	Rochester Electronics	>1k
			Asia	WPI	650
TL1451ACNSRG4	As of 9:22 AM GMT, 03 Jul 2009		As of 9:22 AM GMT, 03 Jul 2009
	Lead Time		Region	Company	In Stock	Purchase
	10 Weeks		Americas	DigiKey	Available
TL1451ACPW	As of 9:22 AM GMT, 03 Jul 2009		As of 9:22 AM GMT, 03 Jul 2009
	Lead Time		Region	Company	In Stock	Purchase
	4 Weeks		Americas	Mouser Electronics	28
				Newark	348
				Rochester Electronics	>1k
TL1451ACPWG4	As of 9:22 AM GMT, 03 Jul 2009		As of 9:22 AM GMT, 03 Jul 2009
	Lead Time		Region	Company	In Stock	Purchase
	4 Weeks		Americas	Mouser Electronics	630
	4 Weeks		Europe	Farnell	172
TL1451ACPWR	As of 9:22 AM GMT, 03 Jul 2009		As of 9:22 AM GMT, 03 Jul 2009
	Lead Time		Region	Company	In Stock	Purchase
	16 Weeks	Asia	WPI	>1k
TL1451ACPWRG4	As of 9:22 AM GMT, 03 Jul 2009	As of 9:22 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	16 Weeks	None Reported View Distributors
TL1451AQD	As of 9:22 AM GMT, 03 Jul 2009	As of 9:22 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	6 Weeks	Americas	Avnet	457
			DigiKey	821
			Mouser Electronics	164
			Newark	226
			Rochester Electronics	>1k
		Asia	WPI	70
TL1451AQDG4	As of 9:22 AM GMT, 03 Jul 2009	As of 9:22 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	7 Weeks	Americas	DigiKey	Available
TL1451AQDR	As of 9:22 AM GMT, 03 Jul 2009	As of 9:22 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	6 Weeks	Americas	DigiKey	Available
TL1451AQDRG4	As of 9:22 AM GMT, 03 Jul 2009	As of 9:22 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	6 Weeks	Americas	Avnet	>1k
	6 Weeks	Americas	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
TL1451ACD	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL1451ACDBR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL1451ACDBRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL1451ACDG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL1451ACDR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL1451ACDRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL1451ACN	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
TL1451ACNE4	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
TL1451ACNSR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL1451ACNSRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL1451ACPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL1451ACPWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL1451ACPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL1451ACPWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL1451AQD	TBD	CU NIPDAU	Level-1-220C-UNLIM	View	View
TL1451AQDG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL1451AQDR	TBD	CU NIPDAU	Level-1-220C-UNLIM	View	View
TL1451AQDRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	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 TL1451A

Datasheet

Dual Pulse-Width-Modulation Control Circuits (Rev. E) (PDF 1064 KB) 17156 views
13 Mar 2002

Application Notes

Understanding Buck-Boost Power Stages in Switchmode Power Supplies (Rev. A) (HTM 8 KB) 20316 views
28 May 2002 Read Abstract
Understanding Boost Power Stages In Switchmode Power Supplies (HTM 8 KB) 13737 views
04 Mar 1999 Read Abstract
Understanding Buck Power Stages In Switchmode Power Supplies (HTM 8 KB) 14352 views
04 Mar 1999 Read Abstract

View Application Notes for DC/DC Controllers (External Switch)

Reference Designs

Description	Part #	Company
Dual Non-Sync Buck, Sync Buck, Negative Flyback with Vin 6 to 15 V	PMP00-062	Texas Instruments
Flyback, LDO, Buck, Sync. Buck Reference Design	PMP009	Texas Instruments
Sync. Buck, Two Boost with Vin 4.5-5.5. Multiple output voltages of 3.3 V, 5 V and 12 V	PMP146	Texas Instruments

Tools & Software

Name	Part #	Company	Tool / Software Type
Dual PWM Control Circuit	TL1451AEVM-166	Texas Instruments	Development Boards/EVMs

Part #	Name	Product Family	Comments
TPS5124	TPS5124 Dual Channel Synchronous Step-Down PWM Controller		4.5 to 15V two channel DC/DC controller with internal MOSFET Drivers
TPS51124	Dual, Synchronous Step Down Controller for Low Voltage System Power		4.5 to 28V two channel DC/DC controller with internal MOSFET Drivers
Customers Who Evaluated This Product Also Evaluated...
TPS40200	Wide Input Non-Synchronous Buck DC/DC Controller		TI customers also evaluated this product.
TL5001	PWM Controller with Wide Input Range		TI customers also evaluated this product.
TL1451	Dual Pulse-Width-Modulation Control Circuit		TI customers also evaluated this product.
TPS3809K33	3-Pin Supply Voltage Supervisor	POWER MANAGEMENT-SUPERVISORY CIRCUITS(VOLTAGE SUPERVISORS)	TI customers also evaluated this product.
TPS62046	3.3-V Output, 1.2-A, 95% Efficient Step-Down Converter, 18uA, MSOP-10, QFN-10	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS63002	96% Buck-Boost Converter with 1.7A Current Switches, 5V fixed Output voltage in 3x3 QFN	DC/DC CONVERTERS (INTEGRATED SWITCH)-BUCK-BOOST REGULATORS	TI customers also evaluated this product.
BQ24080	1-cell Li-Ion Charger w/ 1-A FET, AC Present and Charge Enable	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
TPS73618	Single Output LDO, 400mA, Fixed(1.8V), Cap free, Low Noise, Reverse Current Protection	LINEAR REGULATORS-SINGLE CHANNEL LDO	TI customers also evaluated this product.
TPS54386	Dual 3A Non-Synchronous Buck Converter with Integrated High Side MOSFET, 600 kHz	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS23750	IEEE 802.3af PD Controller with Integrated DC/DC	POWER OVER ETHERNET/LAN SOLUTIONS-POWERED DEVICES	TI customers also evaluated this product.
TPS62560	2.25MHz 600mA Step-Down Converter in 2x2mm SON Package	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TL783	3 Pin 750mA Adjustable Positive Voltage Regulator with 125VIN	LINEAR REGULATORS-STANDARD VOLTAGE REGULATORS	TI customers also evaluated this product.
TPS54310	3V to 6V, 3A Synchronous Step Down SWIFT™ Converter	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.

TL1451A Status: ACTIVE

Dual Channel Controller with Wide Input Voltage Range

See Also

Most Popular Links