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| Part Number | UC3525BDWG4 | UC3525ADWG4 | 
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | 
| Product Status | Discontinued at Digi-Key | Discontinued at Digi-Key | 
| Output Type | Transistor Driver | Transistor Driver | 
| Function | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Down, Step-Up/Step-Down | 
| Output Configuration | 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 | 
| Number of Outputs | 2 | 2 | 
| Output Phases | 1 | 1 | 
| Voltage - Supply (Vcc/Vdd) | 8V ~ 35V | 8V ~ 35V | 
| Frequency - Switching | 100Hz ~ 400kHz | 100Hz ~ 400kHz | 
| Duty Cycle (Max) | 49% | 49% | 
| Synchronous Rectifier | Yes | Yes | 
| Clock Sync | Yes | Yes | 
| Serial Interfaces | - | - | 
| Control Features | Dead Time Control, Frequency Control, Ramp, Soft Start | Enable, Frequency Control, Soft Start | 
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 
| Supplier Device Package | 16-SOIC | 16-SOIC |