DC/DC Converters (Integrated Switch) - Inverting Regulators - TL497A

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Datasheet

TL497A (Rev. F) (PDF 624 KB)
22 Feb 2005

	TL497A
Iout(Max)(A)	0.5
Iq(Typ)(mA)	11
Vin(Min)(V)	4.5
Vin(Max)(V)	12
Vout(Min)(V)	-25
Vout(Max)(V)	30
Switch Current Limit(Typ)(A)	0.5
Operating Temp Range(Celsius)	-40 to 85,0 to 70
Pin/Package	14PDIP, 14SO, 14SOIC, 14TSSOP
Topology	Inverting Buck/Boost
Regulated Outputs(#)	1
	Samples
	Inventory

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MC34063A: 1.5-A Boost/Buck/Inverting Switching Regulator
MC33063A: 1.5-A Peak Boost/Buck/Inverting Switching Regulator
TPS54060: 3.5V to 60V Input, 0.5A, 2.5MHz Step Down SWIFT™ Converter with Eco-Mode™
TPS61170: 1.2A Switch, High Voltage Boost Converter in 2x2mm QFN Package
TPS54040: 3.5V to 42V Input, 0.5 A Step Down SWIFT™ Converter with Eco-Mode™

More Related Products

Product Information

Features

High Efficiency . . . 60% or Greater
Peak Switch Current . . . 500 mA
Input Current Limit Protection
TTL-Compatible Inhibit
Adjustable Output Voltage
Input Regulation . . . 0.2% Typ
Output Regulation . . . 0.4% Typ
Soft Start-Up Capability
Can be Used in Buck, Boost, and Inverting Configurations

Description

The TL497A incorporates all the active functions required in the construction of switching voltage regulators. It also can be used as the control element to drive external components for high-power-output applications. The TL497A was designed for ease of use in step-up, step-down, or voltage-inversion applications requiring high efficiency.

The TL497A is a fixed-on-time variable-frequency switching-voltage-regulator control circuit. The switch-on time is programmed by a single external capacitor connected between FREQ CONTROL and GND. This capacitor, C_T, is charged by an internal constant-current generator to a predetermined threshold. The charging current and the threshold vary proportionally with V_CC. Thus, the switch-on time remains constant over the specified range of input voltage (4.

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
TL497ACD	ACTIVE	0 to 70	0.95 \| 1ku	SOIC (D) \| 14	View	50 \| TUBE	Purchase Samples
TL497ACDE4	ACTIVE	0 to 70	0.95 \| 1ku	SOIC (D) \| 14	View	50 \| TUBE	Purchase Samples
TL497ACDG4	ACTIVE	0 to 70	0.95 \| 1ku	SOIC (D) \| 14	View	50 \| TUBE	Purchase Samples
TL497ACDR	ACTIVE	0 to 70	0.86 \| 1ku	SOIC (D) \| 14	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
TL497ACDRE4	ACTIVE	0 to 70	0.86 \| 1ku	SOIC (D) \| 14	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
TL497ACDRG4	ACTIVE	0 to 70	0.86 \| 1ku	SOIC (D) \| 14	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
TL497ACN	ACTIVE	0 to 70	0.86 \| 1ku	PDIP (N) \| 14	View	25 \| TUBE	Contact TI Distributor or Sales Office
TL497ACNE4	ACTIVE	0 to 70	0.86 \| 1ku	PDIP (N) \| 14	View	25 \| TUBE	Contact TI Distributor or Sales Office
TL497ACNSLE	OBSOLETE			SO (NS) \| 14	View			Not Available
TL497ACNSR	ACTIVE	0 to 70	0.86 \| 1ku	SO (NS) \| 14	View	2000 \| LARGE T&R	Purchase Samples
TL497ACNSRE4	ACTIVE	0 to 70	0.86 \| 1ku	SO (NS) \| 14	View	2000 \| LARGE T&R	Purchase Samples
TL497ACNSRG4	ACTIVE	0 to 70	0.86 \| 1ku	SO (NS) \| 14	View	2000 \| LARGE T&R	Purchase Samples
TL497ACPWR	ACTIVE	0 to 70	0.86 \| 1ku	TSSOP (PW) \| 14	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
TL497ACPWRE4	ACTIVE	0 to 70	0.86 \| 1ku	TSSOP (PW) \| 14	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
TL497ACPWRG4	ACTIVE	0 to 70	0.86 \| 1ku	TSSOP (PW) \| 14	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
TL497AID	ACTIVE	-40 to 85	1.04 \| 1ku	SOIC (D) \| 14	View	50 \| TUBE	Purchase Samples
TL497AIDE4	ACTIVE	-40 to 85	1.04 \| 1ku	SOIC (D) \| 14	View	50 \| TUBE	Purchase Samples
TL497AIDG4	ACTIVE	-40 to 85	1.04 \| 1ku	SOIC (D) \| 14	View	50 \| TUBE	Purchase Samples
TL497AIDR	ACTIVE	-40 to 85	0.95 \| 1ku	SOIC (D) \| 14	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
TL497AIDRE4	ACTIVE	-40 to 85	0.95 \| 1ku	SOIC (D) \| 14	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
TL497AIDRG4	ACTIVE	-40 to 85	0.95 \| 1ku	SOIC (D) \| 14	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
TL497AIJ	OBSOLETE			CDIP (J) \| 14				Not Available
TL497AIN	ACTIVE	-40 to 85	0.95 \| 1ku	PDIP (N) \| 14	View	25 \| TUBE	Contact TI Distributor or Sales Office
TL497AINE4	ACTIVE	-40 to 85	0.95 \| 1ku	PDIP (N) \| 14	View	25 \| TUBE	Contact TI Distributor or Sales Office

* 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 10:40 AM GMT, 20 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 18 WeeksTL497ACD
Americas	Avnet	390
Americas	Rochester Electronics	>1k
Europe	Arrow Northern Europe	500
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	128
TI Lead Time*: 18 WeeksTL497ACDE4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksTL497ACDG4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksTL497ACDR
Americas	Rochester Electronics	>1k
Worldwide	DigiKey	113
TI Lead Time*: 18 WeeksTL497ACDRE4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksTL497ACDRG4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksTL497ACN
Americas	Arrow	262
	Avnet	>1k
	Newark	700
	Rochester Electronics	>1k
Asia	Farnell Asia	>1k
Europe	Arrow Northern Europe	50
	Compel	2
	Farnell	>1k
Worldwide	DigiKey	585
Worldwide	Mouser Electronics	828
TI Lead Time*: 18 WeeksTL497ACNE4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksTL497ACNSR
None Reported View Distributors
TI Lead Time*: 18 WeeksTL497ACNSRE4
None Reported View Distributors
TI Lead Time*: 18 WeeksTL497ACNSRG4
None Reported View Distributors
TI Lead Time*: 20 WeeksTL497ACPWR
Worldwide	DigiKey	>1k
TI Lead Time*: 20 WeeksTL497ACPWRE4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksTL497ACPWRG4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksTL497AID
Americas	Rochester Electronics	933
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksTL497AIDE4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksTL497AIDG4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksTL497AIDR
Worldwide	DigiKey	141
Worldwide	Mouser Electronics	>1k
TI Lead Time*: 18 WeeksTL497AIDRE4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksTL497AIDRG4
Worldwide	DigiKey	Available
TI Lead Time*: 14 WeeksTL497AIN
Americas	Rochester Electronics	925
Europe	EBV Elektronik	8
Worldwide	DigiKey	>1k
Worldwide	Mouser Electronics	439
TI Lead Time*: 14 WeeksTL497AINE4
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
TL497ACD	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497ACDE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497ACDG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497ACDR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497ACDRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497ACDRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497ACN	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
TL497ACNE4	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
TL497ACNSR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497ACNSRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497ACNSRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497ACPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497ACPWRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497ACPWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497AID	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497AIDE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497AIDG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497AIDR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497AIDRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497AIDRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL497AIN	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
TL497AINE4	Pb-Free (RoHS)	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

Most useful technical documents for TL497A

Datasheet

TL497A (Rev. F) (PDF, 624 KB)
22 Feb 2005

Application Notes

Understanding Buck-Boost Power Stages in Switchmode Power Supplies (Rev. A) (HTM, 8 KB) 23186 views
28 May 2002 Read Abstract
Designing Switching Voltage Regulators with TL497A (HTM, 8 KB) 1973 views
11 Aug 2003 Read Abstract
Understanding Boost Power Stages In Switchmode Power Supplies (HTM, 8 KB) 15422 views
04 Mar 1999 Read Abstract
Understanding Buck Power Stages In Switchmode Power Supplies (HTM, 8 KB) 16099 views
04 Mar 1999 Read Abstract

Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
TPS63700	Adjustable, -15V Output Inverting DC/DC Converter in 3x3 QFN	DC/DC CONVERTERS (INTEGRATED SWITCH)-INVERTING REGULATORS	TI customers also evaluated this product.
MC34063A	1.5-A Boost/Buck/Inverting Switching Regulator	DC/DC CONVERTERS (INTEGRATED SWITCH)-INVERTING REGULATORS	TI customers also evaluated this product.
MC33063A	1.5-A Peak Boost/Buck/Inverting Switching Regulator	DC/DC CONVERTERS (INTEGRATED SWITCH)-INVERTING REGULATORS	TI customers also evaluated this product.
MC33063A-Q1	Automotive Catalog 1.5-A Peak Boost/Buck/Inverting Switching Regulator	DC/DC CONVERTERS (INTEGRATED SWITCH)-INVERTING REGULATORS	TI customers also evaluated this product.
TPS54060	3.5V to 60V Input, 0.5A, 2.5MHz Step Down SWIFT™ Converter with Eco-Mode™	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS61170	1.2A Switch, High Voltage Boost Converter in 2x2mm QFN Package	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-UP REGULATORS	TI customers also evaluated this product.
TPS54040	3.5V to 42V Input, 0.5 A Step Down SWIFT™ Converter with Eco-Mode™	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS5430	5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.

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TL497A Status: ACTIVE

500-mA Peak Step-Up, Step-Down, Inverting Switching Voltage Regulator

Most Popular Links

Datasheet

Customers Who Evaluated This Product Also Evaluated

Product Information

Features

Description

Pricing / Packaging / CAD Design Tools / Samples

Inventory

Quality & Lead (Pb)-Free Data

Technical Documents

Datasheet

Application Notes

Support and Community

Customer Tags

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