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| Part Number | ISL6440IAZ | ISL6445IAZ | ISL6420IAZ | ISL6440IA |
|---|---|---|---|---|
| Manufacturer | Renesas Electronics America Inc | Intersil | Intersil | Intersil |
| Product Status | Active | Obsolete | Obsolete | Obsolete |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Function | Step-Down | Step-Down | Step-Down | Step-Down |
| Output Configuration | Positive | Positive | Positive | Positive |
| Topology | Buck | Buck | Buck | Buck |
| Number of Outputs | 2 | 2 | 1 | 2 |
| Output Phases | 2 | 2 | 1 | 2 |
| Voltage - Supply (Vcc/Vdd) | 5.6V ~ 24V | 5.6V ~ 24V | 5.6V ~ 16V | 5.6V ~ 24V |
| Frequency - Switching | 300kHz | 1.4MHz | 100kHz ~ 1.4MHz | 300kHz |
| Duty Cycle (Max) | 93% | 73% | 96% | 93% |
| Synchronous Rectifier | Yes | Yes | Yes | Yes |
| Clock Sync | No | No | No | No |
| Serial Interfaces | - | - | - | - |
| Control Features | Enable, Phase Control, Power Good, Soft Start | Enable, Phase Control, Power Good, Soft Start | Enable, Frequency Control, Phase Control, Power Good, Soft Start | Enable, Phase Control, Power Good, 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 | 24-SSOP (0.154", 3.90mm Width) | 24-SSOP (0.154", 3.90mm Width) | 20-SSOP (0.154", 3.90mm Width) | 24-SSOP (0.154", 3.90mm Width) |
| Supplier Device Package | 24-QSOP | 24-QSOP | 20-QSOP | 24-QSOP |
