| Part Number | ISL6559CRZ | ISL6552CRZ | 
|---|---|---|
| Manufacturer | Intersil | Renesas Electronics America Inc | 
| Category | PMIC - Voltage Regulators - DC DC Switching Controllers | PMIC - Voltage Regulators - DC DC Switching Controllers | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Output Type | PWM Signal | PWM Signal | 
| Function | Step-Down | Step-Down | 
| Output Configuration | Positive | Positive | 
| Topology | Buck | Buck | 
| Number of Outputs | 4 | 4 | 
| Output Phases | 4 | 4 | 
| Voltage - Supply (Vcc/Vdd) | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 
| Frequency - Switching | 80kHz ~ 1MHz | 50kHz ~ 1.5MHz | 
| Duty Cycle (Max) | 75% | - | 
| Synchronous Rectifier | - | - | 
| Clock Sync | No | No | 
| Serial Interfaces | - | - | 
| Control Features | Current Limit, Enable, Frequency Control, Power Good | Enable, Frequency Control, Power Good | 
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 32-VFQFN Exposed Pad | 20-VQFN Exposed Pad | 
| Supplier Device Package | 32-QFN (5x5) | 20-QFN (5x5) |