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Product InformationFeatures
Description
The TL499A is an integrated circuit designed to provide a wide range of adjustable regulated supply voltages. The regulated output voltage can be varied from 2.9 V to 30 V by adjusting two external resistors. When the TL499A is ac-coupled to line power through a step-down transformer, it operates as a series dc voltage regulator to maintain the regulated output voltage. With the addition of a battery from 1.1 V to 10 V, an inductor, a filter capacitor, and two resistors, the TL499A operates as a step-up switching regulator during an ac-line failure. The adjustable regulated output voltage makes the TL499A useful for a wide range of applications. Providing backup power during an ac-line failure makes the TL499A extremely useful in microprocessor memory applications. The TL499AC is characterized for operation from -20°C to 85°C. |
| Price | Packaging | CAD Design Tools | Samples | ||||||
| Device | Status | Temp (oC) | Price | Quantity | Package | Pins | Top Side Marking | Package QTY | Package Carrier | Symbols | Footprints | Samples |
| TL499ACP | ACTIVE | -20 to 85 | 1.08 | 1ku | PDIP (P) | 8 | View | 50 | TUBE | Contact TI Distributor or Sales Office | ||
| TL499ACPE4 | ACTIVE | -20 to 85 | 1.08 | 1ku | PDIP (P) | 8 | View | 50 | TUBE | Contact TI Distributor or Sales Office | ||
| TL499ACPSR | ACTIVE | -20 to 85 | 1.08 | 1ku | SO (PS) | 8 | View | 2000 | LARGE T&R | Contact TI Distributor or Sales Office | ||
| TL499ACPSRE4 | ACTIVE | -20 to 85 | 1.08 | 1ku | SO (PS) | 8 | View | 2000 | LARGE T&R | Contact TI Distributor or Sales Office | ||
| TL499ACPSRG4 | ACTIVE | -20 to 85 | 1.08 | 1ku | SO (PS) | 8 | 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.
| Reported Distributor Inventory as of 10:35 AM GMT, 08 Nov 2009 | |||
| Region | Company | In Stock | Purchase |
| TI Lead Time*: 18 WeeksTL499ACP | |||
| Americas | Newark | 750 | |
| Rochester Electronics | >1k | ||
| Asia | WPI | 82 | |
| Worldwide | DigiKey | 658 | |
| Mouser Electronics | 806 | ||
| TI Lead Time*: 18 WeeksTL499ACPE4 | |||
| Americas | Rochester Electronics | >1k | |
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 15 WeeksTL499ACPSR | |||
| Americas | Rochester Electronics | >1k | |
| Worldwide | DigiKey | >1k | |
| TI Lead Time*: 15 WeeksTL499ACPSRE4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 15 WeeksTL499ACPSRG4 | |||
| Worldwide | DigiKey | Available | |
** 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 |
TL499ACP  | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | View | View |
| TL499ACPE4 | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | View | View |
| TL499ACPSR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL499ACPSRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| TL499ACPSRG4 | 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.
Most useful technical documents for TL499A 
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