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| Part Number | XR77129ELB-F | XR77128ELB-F |
|---|---|---|
| Manufacturer | MaxLinear, Inc. | MaxLinear, Inc. |
| Product Status | Obsolete | Obsolete |
| Output Type | Transistor Driver | Transistor Driver |
| Function | Step-Down | Step-Down |
| Output Configuration | Positive | Positive |
| Topology | Buck | Buck |
| Number of Outputs | 4 | 4 |
| Output Phases | 1 | 1 |
| Voltage - Supply (Vcc/Vdd) | 6V ~ 40V | 5.5V ~ 25V |
| Frequency - Switching | 105kHz ~ 1.23MHz | 105kHz ~ 1.23MHz |
| Duty Cycle (Max) | - | - |
| Synchronous Rectifier | Yes | Yes |
| Clock Sync | No | No |
| Serial Interfaces | I²C, SMBus | I²C, SMBus |
| Control Features | Enable | Enable |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 44-WFQFN Exposed Pad | 44-WFQFN Exposed Pad |
| Supplier Device Package | 44-TQFN (7x7) | 44-TQFN (7x7) |
