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| Part Number | UCC39422N | UCC39421N |
|---|---|---|
| Manufacturer | Texas Instruments | Unitrode |
| Product Status | Obsolete | Active |
| Output Type | Transistor Driver | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down |
| Output Configuration | Positive | Positive |
| Topology | Boost, Flyback, SEPIC | Boost, Flyback, SEPIC |
| Number of Outputs | 1 | 1 |
| Output Phases | 1 | 1 |
| Voltage - Supply (Vcc/Vdd) | 1.8V ~ 8V | 1.8V ~ 8V |
| Frequency - Switching | 150kHz ~ 1.2MHz | 150kHz ~ 1.2MHz |
| Duty Cycle (Max) | 88% | 88% |
| Synchronous Rectifier | Yes | Yes |
| Clock Sync | Yes | Yes |
| Serial Interfaces | - | - |
| Control Features | Enable, Frequency Control, Low Battery, Reset | Enable, Frequency Control, Low Battery, Reset |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | 20-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 20-PDIP | 16-PDIP |
