| Part Number | ISL85003FRZ-T | ISL85403FRZ-T |
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| Manufacturer | Renesas Electronics America Inc | Renesas Electronics America Inc |
| Category | PMIC - Voltage Regulators - DC DC Switching Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators |
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| Product Status | Active | Active |
| Function | Step-Down | Step-Up, Step-Down, Step-Up/Step-Down |
| Output Configuration | Positive | Positive |
| Topology | Buck | Buck, Boost, Buck-Boost |
| Output Type | Adjustable | Adjustable |
| Number of Outputs | 1 | 1 |
| Voltage - Input (Min) | 4.5V | 3V |
| Voltage - Input (Max) | 18V | 40V |
| Voltage - Output (Min/Fixed) | 0.8V | 0.5V |
| Voltage - Output (Max) | 18V | 36V |
| Current - Output | 3A | 2.5A |
| Frequency - Switching | 500kHz | 200kHz ~ 2.2MHz |
| Synchronous Rectifier | Yes | Both |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 105°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 12-VFDFN Exposed Pad | 20-VFQFN Exposed Pad |
| Supplier Device Package | 12-DFN (4x3) | 20-QFN (4x4) |