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| Part Number | UC3525ADWG4 | UC3525BDWG4 | UC3526ADWG4 | UC3825ADWG4 | UC3524ADWG4 |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Unitrode |
| Product Status | Discontinued at Digi-Key | Discontinued at Digi-Key | Discontinued at Digi-Key | Discontinued at Digi-Key | Active |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Function | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down | Step-Up, Step-Down, Step-Up/Step-Down |
| Output Configuration | Positive | Positive | Positive | Positive | Positive |
| Topology | Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull | Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull | Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull | Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull | Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull |
| Number of Outputs | 2 | 2 | 2 | 2 | 2 |
| Output Phases | 1 | 1 | 1 | 1 | 1 |
| Voltage - Supply (Vcc/Vdd) | 8V ~ 35V | 8V ~ 35V | 7V ~ 35V | 8.4V ~ 22V | 8V ~ 40V |
| Frequency - Switching | 100Hz ~ 400kHz | 100Hz ~ 400kHz | 1Hz ~ 600kHz | 400kHz ~ 1MHz | 500kHz |
| Duty Cycle (Max) | 49% | 49% | 49% | 50% | 45% |
| Synchronous Rectifier | Yes | Yes | Yes | No | No |
| Clock Sync | Yes | Yes | Yes | No | No |
| Serial Interfaces | - | - | - | - | - |
| Control Features | Enable, Frequency Control, Soft Start | Dead Time Control, Frequency Control, Ramp, Soft Start | Enable, Frequency Control, Reset, Soft Start | Current Limit, Frequency Control, Ramp, Soft Start | Frequency Control |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 18-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 16-SOIC | 16-SOIC | 18-SOIC | 16-SOIC | 16-SOIC |
