| Part Number | CS51021ED16 | CS51221ED16 | 
|---|---|---|
| Manufacturer | onsemi | onsemi | 
| Category | PMIC - Voltage Regulators - DC DC Switching Controllers | PMIC - Voltage Regulators - DC DC Switching Controllers | 
|   |   | |
| Product Status | Active | Obsolete | 
| Output Type | - | Transistor Driver | 
| Function | - | Step-Up/Step-Down | 
| Output Configuration | - | Positive, Isolation Capable | 
| Topology | - | Forward Converter | 
| Number of Outputs | - | 1 | 
| Output Phases | - | 1 | 
| Voltage - Supply (Vcc/Vdd) | - | 3.8V ~ 15V | 
| Frequency - Switching | - | 1MHz | 
| Duty Cycle (Max) | - | 85% | 
| Synchronous Rectifier | - | No | 
| Clock Sync | - | Yes | 
| Serial Interfaces | - | - | 
| Control Features | - | Current Limit, Frequency Control, Ramp, Soft Start | 
| Operating Temperature | - | -40°C ~ 85°C (TA) | 
| Mounting Type | - | Surface Mount | 
| Package / Case | - | 16-SOIC (0.154", 3.90mm Width) | 
| Supplier Device Package | - | 16-SOIC |