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Product InformationFeatures
Description
The TL494 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 flexibility to tailor the power-supply control circuitry to a specific application. The TL494 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits. The error amplifiers exhibit a common-mode voltage range from 0.3 V to VCC2 V. The dead-time control 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 drive the common circuits in synchronous multiple-rail power supplies. View All Description in Datasheet |
| Price | Packaging | CAD Design Tools | Samples | ||||||
| Device | Status | Temp (oC) | Price | Quantity | Package | Pins | Top Side Marking | Package QTY | Package Carrier | Symbols | Footprints | Samples |
| TL494CD | ACTIVE | 0 to 70 | 0.25 | 1ku | SOIC (D) | 16 | View | 40 | TUBE | Purchase Samples | ||
| TL494CDBR | ACTIVE | 0 to 70 | 0.28 | 1ku | SSOP (DB) | 16 | View | 2000 | LARGE T&R | Purchase Samples | ||
| TL494CDBRE4 | ACTIVE | 0 to 70 | 0.28 | 1ku | SSOP (DB) | 16 | View | 2000 | LARGE T&R | Purchase Samples | ||
| TL494CDBRG4 | ACTIVE | 0 to 70 | 0.28 | 1ku | SSOP (DB) | 16 | View | 2000 | LARGE T&R | Purchase Samples | ||
| TL494CDE4 | ACTIVE | 0 to 70 | 0.25 | 1ku | SOIC (D) | 16 | View | 40 | TUBE | Purchase Samples | ||
| TL494CDG4 | ACTIVE | 0 to 70 | 0.25 | 1ku | SOIC (D) | 16 | View | 40 | TUBE | Purchase Samples | ||
| TL494CDR | ACTIVE | 0 to 70 | 0.25 | 1ku | SOIC (D) | 16 | View | 2500 | LARGE T&R | Contact TI Distributor or Sales Office | ||
| TL494CDRE4 | ACTIVE | 0 to 70 | 0.25 | 1ku | SOIC (D) | 16 | View | 2500 | LARGE T&R | Contact TI Distributor or Sales Office | ||
| TL494CDRG4 | ACTIVE | 0 to 70 | 0.25 | 1ku | SOIC (D) | 16 | View | 2500 | LARGE T&R | Contact TI Distributor or Sales Office | ||
| TL494CJ | OBSOLETE | CDIP (J) | 16 | Not Available | ||||||
| TL494CN | ACTIVE | 0 to 70 | 0.30 | 1ku | PDIP (N) | 16 | View | 25 | TUBE | Contact TI Distributor or Sales Office | ||
| TL494CNE4 | ACTIVE | 0 to 70 | 0.30 | 1ku | PDIP (N) | 16 | View | 25 | TUBE | Contact TI Distributor or Sales Office | ||
| TL494CNSR | ACTIVE | 0 to 70 | 0.28 | 1ku | SO (NS) | 16 | View | 2000 | LARGE T&R | Contact TI Distributor or Sales Office | ||
| TL494CNSRG4 | ACTIVE | 0 to 70 | 0.28 | 1ku | SO (NS) | 16 | View | 2000 | LARGE T&R | Contact TI Distributor or Sales Office | ||
| TL494CPW | ACTIVE | 0 to 70 | 0.28 | 1ku | TSSOP (PW) | 16 | View | 90 | TUBE | Purchase Samples | ||
| TL494CPWE4 | ACTIVE | 0 to 70 | 0.28 | 1ku | TSSOP (PW) | 16 | View | 90 | TUBE | Purchase Samples | ||
| TL494CPWG4 | ACTIVE | 0 to 70 | 0.28 | 1ku | TSSOP (PW) | 16 | View | 90 | TUBE | Purchase Samples | ||
| TL494CPWLE | OBSOLETE | TSSOP (PW) | 16 | View | Not Available | |||||
| TL494CPWR | ACTIVE | 0 to 70 | 0.25 | 1ku | TSSOP (PW) | 16 | View | 2000 | LARGE T&R | Contact TI Distributor or Sales Office | ||
| TL494CPWRE4 | ACTIVE | 0 to 70 | 0.25 | 1ku | TSSOP (PW) | 16 | View | 2000 | LARGE T&R | Contact TI Distributor or Sales Office | ||
| TL494CPWRG4 | ACTIVE | 0 to 70 | 0.25 | 1ku | TSSOP (PW) | 16 | View | 2000 | LARGE T&R | Contact TI Distributor or Sales Office | ||
| TL494ID | ACTIVE | -40 to 85 | 0.25 | 1ku | SOIC (D) | 16 | View | 40 | TUBE | Contact TI Distributor or Sales Office | ||
| TL494IDE4 | ACTIVE | -40 to 85 | 0.25 | 1ku | SOIC (D) | 16 | View | 40 | TUBE | Contact TI Distributor or Sales Office | ||
| TL494IDG4 | ACTIVE | -40 to 85 | 0.25 | 1ku | SOIC (D) | 16 | View | 40 | TUBE | Contact TI Distributor or Sales Office | ||
| TL494IDR | ACTIVE | -40 to 85 | 0.25 | 1ku | SOIC (D) | 16 | View | 2500 | LARGE T&R | Contact TI Distributor or Sales Office | ||
| TL494IDRE4 | ACTIVE | -40 to 85 | 0.25 | 1ku | SOIC (D) | 16 | View | 2500 | LARGE T&R | |||
| TL494IDRG4 | ACTIVE | -40 to 85 | 0.25 | 1ku | SOIC (D) | 16 | View | 2500 | LARGE T&R | |||
| TL494IN | ACTIVE | -40 to 85 | 0.30 | 1ku | PDIP (N) | 16 | View | 25 | TUBE | Contact TI Distributor or Sales Office | ||
| TL494INE4 | ACTIVE | -40 to 85 | 0.30 | 1ku | PDIP (N) | 16 | View | 25 | TUBE | Contact TI Distributor or Sales Office | ||
| TL494MJ | OBSOLETE | -55 to 125 | CDIP (J) | 16 | Not Available | |||||
| TL494MJB | OBSOLETE | -55 to 125 | CDIP (J) | 16 | Not Available | |||||
* 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.
| Reported Distributor Inventory as of 10:14 AM GMT, 09 Feb 2010 | |||
| Region | Company | In Stock | Purchase |
| TI Lead Time*: 20 WeeksTL494CD | |||
| Americas | Rochester Electronics | >1k | |
| Asia | Farnell Asia | 960 | |
| Europe | Arrow Southern Europe | 29 | |
| Avnet-SILICA | 40 | ||
| Farnell | 810 | ||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 17 WeeksTL494CDBR | |||
| Americas | Rochester Electronics | >1k | |
| TI Lead Time*: 17 WeeksTL494CDBRE4 | |||
| None Reported View Distributors | |||
| TI Lead Time*: 17 WeeksTL494CDBRG4 | |||
| None Reported View Distributors | |||
| TI Lead Time*: 20 WeeksTL494CDE4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 20 WeeksTL494CDG4 | |||
| Asia | Farnell Asia | 214 | |
| Europe | Farnell | 186 | |
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 20 WeeksTL494CDR | |||
| Americas | Rochester Electronics | >1k | |
| Asia | WPI | >1k | |
| Europe | Avnet-SILICA | >1k | |
| Worldwide | DigiKey | >1k | |
| TI Lead Time*: 20 WeeksTL494CDRE4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 20 WeeksTL494CDRG4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 20 WeeksTL494CN | |||
| Americas | Rochester Electronics | >1k | |
| Asia | Farnell Asia | >1k | |
| Europe | Arrow Northern Europe | 18 | |
| Farnell | 395 | ||
| TI Lead Time*: 20 WeeksTL494CNE4 | |||
| None Reported View Distributors | |||
| TI Lead Time*: 20 WeeksTL494CNSR | |||
| Asia | Farnell Asia | 277 | |
| Europe | Farnell | 198 | |
| TI Lead Time*: 20 WeeksTL494CNSRG4 | |||
| None Reported View Distributors | |||
| TI Lead Time*: 22 WeeksTL494CPW | |||
| Americas | Avnet | 72 | |
| Worldwide | DigiKey | Available | |
| Mouser Electronics | 73 | ||
| TI Lead Time*: 22 WeeksTL494CPWE4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 22 WeeksTL494CPWG4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 22 WeeksTL494CPWR | |||
| Worldwide | DigiKey | >1k | |
| TI Lead Time*: 22 WeeksTL494CPWRE4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 22 WeeksTL494CPWRG4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 20 WeeksTL494ID | |||
| Americas | Rochester Electronics | 200 | |
| Asia | Farnell Asia | 564 | |
| Europe | Arrow Southern Europe | >1k | |
| Avnet-SILICA | 280 | ||
| Worldwide | DigiKey | >1k | |
| TI Lead Time*: 20 WeeksTL494IDE4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 20 WeeksTL494IDG4 | |||
| Asia | Farnell Asia | 471 | |
| Europe | Farnell | 366 | |
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 20 WeeksTL494IDR | |||
| Europe | Arrow Southern Europe | >1k | |
| Compel | 4 | ||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 20 WeeksTL494IDRE4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 20 WeeksTL494IDRG4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 20 WeeksTL494IN | |||
| Americas | Rochester Electronics | 265 | |
| Asia | Farnell Asia | 23 | |
| WPI | 35 | ||
| TI Lead Time*: 20 WeeksTL494INE4 | |||
| None Reported View 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.
| Product Content | DPPM / MTBF / FIT Rate | ||||
| Device | Eco Plan* | Lead / Ball Finish | MSL Rating / Peak Reflow | Details | Details |
| TL494CD | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CDBR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CDBRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CDBRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CDE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CDG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CDR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CDRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CDRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CN | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | View | View |
| TL494CNE4 | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | View | View |
| TL494CNSR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CNSRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CPW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CPWE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CPWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CPWR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CPWRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494CPWRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494ID | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494IDE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494IDG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494IDR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494IDRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494IDRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL494IN | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | View | View |
| TL494INE4 | 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.
Most useful technical documents for TL494 
View Application Notes for PWM Power Supply Controllers
| Part # | Name | Product Family | Comments |
| TL594 | Pulse-Width-Modulation (PWM) Control Circuit | AC/DC AND DC/DC POWER SUPPLIES - PWM POWER SUPPLY CONTROLLERS | TL594 is similar to the TL494, however, the TL594 features an undervoltage lockout control circuit. |
| TL3845B | High-Performance Current-Mode PWM Controller | AC/DC AND DC/DC POWER SUPPLIES - PWM POWER SUPPLY CONTROLLERS | The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. TL384xB include an undervoltage lockout |
| SG3524 | Regulating Pulse-Width Modulators | AC/DC AND DC/DC POWER SUPPLIES - PWM POWER SUPPLY CONTROLLERS | The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. |
| TL598 | Pulse-Width-Modulation (Pwm) Control Circuit | AC/DC AND DC/DC POWER SUPPLIES - PWM POWER SUPPLY CONTROLLERS | The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. |
| SG2524 | Regulating Pulse-Width Modulator | AC/DC AND DC/DC POWER SUPPLIES - PWM POWER SUPPLY CONTROLLERS | The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. |
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