| Part Number | UCC28250RGPR | UCC28251RGPR | 
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | 
| Category | PMIC - Voltage Regulators - DC DC Switching Controllers | PMIC - Voltage Regulators - DC DC Switching Controllers | 
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| Product Status | Active | Active | 
| Output Type | PWM Signal | PWM Signal | 
| Function | Step-Up/Step-Down | Step-Up/Step-Down | 
| Output Configuration | Positive | Positive | 
| Topology | Full-Bridge, Half-Bridge, Push-Pull | Full-Bridge, Half-Bridge, Push-Pull | 
| Number of Outputs | 2 | 2 | 
| Output Phases | 1 | 1 | 
| Voltage - Supply (Vcc/Vdd) | 4.7V ~ 17V | 4.7V ~ 17V | 
| Frequency - Switching | 85kHz ~ 1.15MHz | 42kHz ~ 945kHz | 
| Duty Cycle (Max) | - | - | 
| Synchronous Rectifier | Yes | Yes | 
| Clock Sync | No | No | 
| Serial Interfaces | - | - | 
| Control Features | Current Limit, Enable, Frequency Control, Ramp, Soft Start | Current Limit, Enable, Frequency Control, Ramp, Soft Start | 
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 20-VFQFN Exposed Pad | 20-VFQFN Exposed Pad | 
| Supplier Device Package | 20-QFN (4x4) | 20-QFN (4x4) |