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| Part Number | UCC28250PW | UCC28950PW | UCC28250PWR | UCC28251PW | UCC28220PW | UCC28230PW |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Active | Active | Active | Active | Active | Obsolete |
| Output Type | PWM Signal | Transistor Driver | PWM Signal | PWM Signal | 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 |
| Output Configuration | Positive | Positive | Positive | Positive | Positive | Positive |
| Topology | Full-Bridge, Half-Bridge, Push-Pull | Full-Bridge | Full-Bridge, Half-Bridge, Push-Pull | Full-Bridge, Half-Bridge, Push-Pull | Flyback, Forward Converter | Full-Bridge, Half-Bridge, Push-Pull |
| Number of Outputs | 2 | 6 | 2 | 2 | 2 | 4 |
| Output Phases | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage - Supply (Vcc/Vdd) | 4.7V ~ 17V | 8V ~ 17V | 4.7V ~ 17V | 4.7V ~ 17V | 8.4V ~ 14.5V | 7V ~ 17V |
| Frequency - Switching | 85kHz ~ 1.15MHz | 50kHz ~ 1MHz | 85kHz ~ 1.15MHz | 42kHz ~ 945kHz | 200kHz ~ 2MHz | 100kHz ~ 550kHz |
| Duty Cycle (Max) | - | 95% | - | - | 75% | - |
| Synchronous Rectifier | Yes | Yes | Yes | Yes | No | No |
| Clock Sync | No | Yes | No | No | No | No |
| Serial Interfaces | - | - | - | - | - | - |
| Control Features | Current Limit, Enable, Frequency Control, Ramp, Soft Start | Dead Time Control, Enable, Frequency Control, Soft Start | Current Limit, Enable, Frequency Control, Ramp, Soft Start | Current Limit, Enable, Frequency Control, Ramp, Soft Start | Ramp, Soft Start | Frequency Control, Soft Start |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 105°C (TA) | -55°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) | 24-TSSOP (0.173", 4.40mm Width) | 20-TSSOP (0.173", 4.40mm Width) | 20-TSSOP (0.173", 4.40mm Width) | 16-TSSOP (0.173", 4.40mm Width) | 14-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 20-TSSOP | 24-TSSOP | 20-TSSOP | 20-TSSOP | 16-TSSOP | 14-TSSOP |
