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| Part Number | CS51221EDR16 | CS51221EDR16G | CS51021EDR16 | CS51220EDR16 | CS51221ED16 |
|---|---|---|---|---|---|
| Manufacturer | onsemi | onsemi | onsemi | onsemi | onsemi |
| Product Status | Obsolete | Active | Active | Obsolete | Obsolete |
| Output Type | Transistor Driver | Transistor Driver | - | PWM Signal | Transistor Driver |
| Function | Step-Up/Step-Down | Step-Up/Step-Down | - | Step-Up/Step-Down | Step-Up/Step-Down |
| Output Configuration | Positive, Isolation Capable | Positive, Isolation Capable | - | Positive, Isolation Capable | Positive, Isolation Capable |
| Topology | Forward Converter | Forward Converter | - | Forward Converter | Forward Converter |
| Number of Outputs | 1 | 1 | - | 1 | 1 |
| Output Phases | 1 | 1 | - | 1 | 1 |
| Voltage - Supply (Vcc/Vdd) | 3.8V ~ 15V | 3.8V ~ 15V | - | 3.8V ~ 20V | 3.8V ~ 15V |
| Frequency - Switching | 1MHz | 1MHz | - | 500kHz | 1MHz |
| Duty Cycle (Max) | 85% | 85% | - | 85% | 85% |
| Synchronous Rectifier | No | No | - | No | No |
| Clock Sync | Yes | Yes | - | Yes | Yes |
| Serial Interfaces | - | - | - | - | - |
| Control Features | Current Limit, Frequency Control, Ramp, Soft Start | Current Limit, Frequency Control, Ramp, Soft Start | - | Current Limit, Enable, Frequency Control, Soft Start | Current Limit, Frequency Control, Ramp, Soft Start |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | - | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | - | Surface Mount | Surface Mount |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | - | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 16-SOIC | 16-SOIC | - | 16-SOIC | 16-SOIC |
