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Product InformationFeatures
Description
The UCC3808A is a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCC3808A contains all of the control and drive circuitry required for off-line or dc-to-dc fixed frequency current-mode switching power supplies with minimal external parts count. The UCC3808A dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60 ns to 200 ns depending on the values of the timing capacitor and resistors, thus limiting each output stage duty cycle to less than 50%. The UCC3808A family offers a variety of package options, temperature range options, and choice of undervoltage lockout levels. The family has UVLO thresholds and hysteresis options for off-line and battery powered systems. Thresholds are shown in the table below. The UCC3808A is an enhanced version of the UCC3808 family. The significant difference is that the A versions feature an internal discharge transistor from the CS pin to ground, which is activated each clock cycle during the oscillator dead time. The feature discharges any filter capacitance on the CS pin during each cycle and helps minimize filter capacitor values and current sense delay. |
| Price | Packaging | CAD Design Tools | Samples | ||||||
| Device | Status | Temp (oC) | Price | Quantity | Package | Pins | Top Side Marking | Package QTY | Package Carrier | Symbols | Footprints | Samples |
| UCC2808AD-1 | ACTIVE | -40 to 85 | 1.45 | 1ku | SOIC (D) | 8 | View | 75 | TUBE | |||
| UCC2808AD-1G4 | ACTIVE | -40 to 85 | 1.45 | 1ku | SOIC (D) | 8 | View | 75 | TUBE | |||
| UCC2808ADTR-1 | ACTIVE | -40 to 85 | 1.35 | 1ku | SOIC (D) | 8 | View | 2500 | LARGE T&R | Purchase Samples | ||
| UCC2808ADTR-1G4 | ACTIVE | -40 to 85 | 1.35 | 1ku | SOIC (D) | 8 | View | 2500 | LARGE T&R | Purchase Samples | ||
| UCC2808AN-1 | ACTIVE | -40 to 85 | 1.75 | 1ku | PDIP (P) | 8 | View | 50 | TUBE | |||
| UCC2808AN-1G4 | ACTIVE | -40 to 85 | 1.75 | 1ku | PDIP (P) | 8 | View | 50 | TUBE | |||
| UCC2808APW-1 | ACTIVE | -40 to 85 | 1.75 | 1ku | TSSOP (PW) | 8 | View | 150 | TUBE | |||
| UCC2808APW-1G4 | ACTIVE | -40 to 85 | 1.75 | 1ku | TSSOP (PW) | 8 | View | 150 | TUBE | |||
| UCC2808APWTR-1 | ACTIVE | -40 to 85 | 1.35 | 1ku | TSSOP (PW) | 8 | View | 2000 | LARGE T&R | Purchase Samples | ||
| UCC2808APWTR-1G4 | ACTIVE | -40 to 85 | 1.35 | 1ku | TSSOP (PW) | 8 | View | 2000 | LARGE T&R | 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.
| Reported Distributor Inventory as of 9:47 AM GMT, 08 Nov 2009 | |||
| Region | Company | In Stock | Purchase |
| TI Lead Time*: 20 WeeksUCC2808AD-1 | |||
| Americas | Arrow | 390 | |
| Asia | WPI | 60 | |
| Europe | Arrow Northern Europe | >1k | |
| Avnet-SILICA | 20 | ||
| Worldwide | DigiKey | 137 | |
| Mouser Electronics | 205 | ||
| TI Lead Time*: 20 WeeksUCC2808AD-1G4 | |||
| Americas | Rochester Electronics | 150 | |
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 20 WeeksUCC2808ADTR-1 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 20 WeeksUCC2808ADTR-1G4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 1 WeekUCC2808AN-1 | |||
| Americas | Rochester Electronics | 900 | |
| Europe | Compel | 17 | |
| Worldwide | DigiKey | 112 | |
| TI Lead Time*: 1 WeekUCC2808AN-1G4 | |||
| Europe | EBV Elektronik | 25 | |
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 1 WeekUCC2808APW-1 | |||
| Americas | Rochester Electronics | >1k | |
| Worldwide | DigiKey | 97 | |
| TI Lead Time*: 1 WeekUCC2808APW-1G4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 1 WeekUCC2808APWTR-1 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 1 WeekUCC2808APWTR-1G4 | |||
| 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 |
| UCC2808AD-1 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| UCC2808AD-1G4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| UCC2808ADTR-1 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| UCC2808ADTR-1G4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| UCC2808AN-1 | Green (RoHS & no Sb/Br) | CU NIPDAU | N/A for Pkg Type | View | View |
| UCC2808AN-1G4 | Green (RoHS & no Sb/Br) | CU NIPDAU | N/A for Pkg Type | View | View |
| UCC2808APW-1 | Green (RoHS & no Sb/Br) | Call TI | Level-2-260C-1 YEAR | View | View |
| UCC2808APW-1G4 | Green (RoHS & no Sb/Br) | Call TI | Level-2-260C-1 YEAR | View | View |
| UCC2808APWTR-1 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | View | View |
| UCC2808APWTR-1G4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | 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 UCC2808A-1 
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| Hot Swap, Push-Pull, Sync. Buck, Negative Flyback, Dual Sync. Buck Reference Design | PMP156 | Texas Instruments |
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