TL594 Status: ACTIVE

Pulse-Width-Modulation (PWM) Control Circuit

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Datasheet

TL594 Pulse-Width-Modulation Control Circuit (Rev. G) (PDF 680 KB)
26 Jan 2007

	TL594
Topology	Boost, Flyback, Forward
Control Method	Voltage Mode
Duty Cycle(Max)(%)	45
PWM Outputs(#)	2
Frequency(Max)(kHz)	300
UVLO Thresholds On/Off(V)	6.1/6
Pin/Package	16PDIP, 16SO, 16SOIC, 16TSSOP
Regulated Outputs(#)	2
	Samples
	Inventory

Customers Who Evaluated This Product Also Evaluated

TL494: PWM Control Circuit
SG3524: Regulating Pulse-Width Modulators
TL598: Pulse-Width-Modulation (Pwm) Control Circuit
TL431A: Adjustable Precision Shunt Regulator
TPS54418: 2.95V to 6V Input, 4A, 2MHz Synchronous Step Down SWIFT™ DCDC Converter
TLV431A: Low Voltage Adjustable Precision Shunt Regulator

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Product Information

Features

Complete PWM Power-Control Circuitry
Uncommitted Outputs for 200-mA Sink orSource Current
Output Control Selects Single-Ended or Push-Pull Operation
Internal Circuitry Prohibits Double Pulse at Either Output
Variable Dead Time Provides Control Over Total Range
Internal Regulator Provides a Stable 5-V Reference Supply Trimmed to 1%
Circuit Architecture Allows Easy Synchronization
Undervoltage Lockout for Low-V_CC Conditions

DESCRIPTION/ORDERING INFORMATION

The TL594 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the systems engineer the flexibility to tailor the power-supply control circuitry to a specific application.

The TL594 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V regulator with a precision of 1%, an undervoltage lockout control circuit, and output control circuitry.

The error amplifiers have a common-mode voltage range of -0.3 V to V_CC - 2 V. The DTC comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to the reference output and providing a sawtooth input to CT, or it can be used to drive the common circuitry in synchronous multiple-rail power supplies.

The uncommitted output transistors provide either common-emitter or emitter-follower output capability. Each device provides for push-pull or single-ended output operation, with selection by means of the output-control function. The architecture of these devices prohibits the possibility of either output being pulsed twice during push-pull operation. The undervoltage lockout control circuit locks the outputs off until the internal circuitry is operational.

The TL594C is characterized for operation from 0°C to 70°C. The TL594I is characterized for operation from -40°C to 85°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
TL594CD	ACTIVE	0 to 70	0.47 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Contact TI Distributor or Sales Office
TL594CDE4	ACTIVE	0 to 70	0.47 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Contact TI Distributor or Sales Office
TL594CDG4	ACTIVE	0 to 70	0.47 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Contact TI Distributor or Sales Office
TL594CDR	ACTIVE	0 to 70	0.43 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
TL594CDRE4	ACTIVE	0 to 70	0.43 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
TL594CDRG4	ACTIVE	0 to 70	0.43 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
TL594CN	ACTIVE	0 to 70	0.38 \| 1ku	PDIP (N) \| 16	View	25 \| TUBE	Contact TI Distributor or Sales Office
TL594CNE4	ACTIVE	0 to 70	0.38 \| 1ku	PDIP (N) \| 16	View	25 \| TUBE	Contact TI Distributor or Sales Office
TL594CNSR	ACTIVE	0 to 70	0.38 \| 1ku	SO (NS) \| 16	View	2000 \| LARGE T&R	Purchase Samples
TL594CNSRE4	ACTIVE	0 to 70	0.38 \| 1ku	SO (NS) \| 16	View	2000 \| LARGE T&R	Purchase Samples
TL594CNSRG4	ACTIVE	0 to 70	0.38 \| 1ku	SO (NS) \| 16	View	2000 \| LARGE T&R	Purchase Samples
TL594CPW	ACTIVE	0 to 70	0.41 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
TL594CPWE4	ACTIVE	0 to 70	0.41 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
TL594CPWG4	ACTIVE	0 to 70	0.41 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
TL594CPWR	ACTIVE	0 to 70	0.38 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
TL594CPWRE4	ACTIVE	0 to 70	0.38 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
TL594CPWRG4	ACTIVE	0 to 70	0.38 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
TL594ID	ACTIVE	-40 to 85	0.72 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Contact TI Distributor or Sales Office
TL594IDE4	ACTIVE	-40 to 85	0.72 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Contact TI Distributor or Sales Office
TL594IDG4	ACTIVE	-40 to 85	0.72 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Contact TI Distributor or Sales Office
TL594IDR	ACTIVE	-40 to 85	0.65 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Purchase Samples
TL594IDRE4	ACTIVE	-40 to 85	0.65 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Purchase Samples
TL594IDRG4	ACTIVE	-40 to 85	0.65 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Purchase Samples
TL594IN	ACTIVE	-40 to 85	0.65 \| 1ku	PDIP (N) \| 16	View	25 \| TUBE	Contact TI Distributor or Sales Office
TL594INE4	ACTIVE	-40 to 85	0.65 \| 1ku	PDIP (N) \| 16	View	25 \| TUBE	Contact TI Distributor or Sales Office
TL594INSR	ACTIVE	-40 to 85	0.65 \| 1ku	SO (NS) \| 16	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
TL594INSRG4	ACTIVE	-40 to 85	0.65 \| 1ku	SO (NS) \| 16	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
TL594IPWR	ACTIVE	-40 to 85	0.65 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
TL594IPWRE4	ACTIVE	-40 to 85	0.65 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
TL594IPWRG4	ACTIVE	-40 to 85	0.65 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R	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*: 15 WeeksTL594CD
Americas	Newark	431
Americas	Rochester Electronics	850
Asia	Farnell Asia	55
Europe	Farnell	7
Europe	Spoerle	800
TI Lead Time*: 15 WeeksTL594CDE4
Asia	Farnell Asia	259
Europe	Farnell	259
TI Lead Time*: 15 WeeksTL594CDG4
None Reported View Distributors
TI Lead Time*: 15 WeeksTL594CDR
Asia	WPI	>1k
Worldwide	Mouser Electronics	>1k
TI Lead Time*: 15 WeeksTL594CDRE4
None Reported View Distributors
TI Lead Time*: 15 WeeksTL594CDRG4
None Reported View Distributors
TI Lead Time*: 18 WeeksTL594CN
Americas	Newark	418
Americas	Rochester Electronics	>1k
Asia	Farnell Asia	389
Asia	WPI	25
Europe	Farnell	59
Worldwide	Mouser Electronics	93
TI Lead Time*: 18 WeeksTL594CNE4
None Reported View Distributors
TI Lead Time*: 15 WeeksTL594CNSR
None Reported View Distributors
TI Lead Time*: 15 WeeksTL594CNSRE4
None Reported View Distributors
TI Lead Time*: 15 WeeksTL594CNSRG4
None Reported View Distributors
TI Lead Time*: 18 WeeksTL594CPW
Americas	Rochester Electronics	630
TI Lead Time*: 18 WeeksTL594CPWE4
None Reported View Distributors
TI Lead Time*: 18 WeeksTL594CPWG4
None Reported View Distributors
TI Lead Time*: 20 WeeksTL594CPWR
Americas	Rochester Electronics	>1k
TI Lead Time*: 20 WeeksTL594CPWRE4
None Reported View Distributors
TI Lead Time*: 20 WeeksTL594CPWRG4
None Reported View Distributors
TI Lead Time*: 15 WeeksTL594ID
Americas	Rochester Electronics	78
Europe	Arrow Northern Europe	>1k
	Avnet-SILICA	120
	Compel	31
	Spoerle	440
Worldwide	DigiKey	464
Worldwide	Mouser Electronics	527
TI Lead Time*: 15 WeeksTL594IDE4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksTL594IDG4
Europe	EBV Elektronik	120
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksTL594IDR
Americas	Rochester Electronics	>1k
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksTL594IDRE4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksTL594IDRG4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksTL594IN
Americas	Rochester Electronics	>1k
Worldwide	DigiKey	77
Worldwide	Mouser Electronics	83
TI Lead Time*: 18 WeeksTL594INE4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksTL594INSR
Worldwide	DigiKey	142
TI Lead Time*: 15 WeeksTL594INSRG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksTL594IPWR
None Reported View Distributors
TI Lead Time*: 20 WeeksTL594IPWRE4
None Reported View Distributors
TI Lead Time*: 20 WeeksTL594IPWRG4
None Reported View Distributors
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
TL594CD	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CDE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CDG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CDR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CDRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CDRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CN	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
TL594CNE4	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
TL594CNSR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CNSRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CNSRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CPWE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CPWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CPWRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594CPWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594ID	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594IDE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594IDG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594IDR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594IDRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594IDRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594IN	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
TL594INE4	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
TL594INSR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594INSRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594IPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594IPWRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TL594IPWRG4	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 TL594

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TL594 Status: ACTIVE

Pulse-Width-Modulation (PWM) Control Circuit

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DESCRIPTION/ORDERING INFORMATION

Pricing / Packaging / CAD Design Tools / Samples

Inventory

Quality & Lead (Pb)-Free Data

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