| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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5,245 pcs
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5245 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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| Clock Sync | |
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| Duty Cycle (Max) | |
| Efficiency | |
| Frequency | |
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| Mounting Type | |
| Number of Outputs | |
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| Supplier Device Package | |
| Synchronous Rectifier | |
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| Voltage |
The MAX1639ESE is an ultra-high-performance step-down DC-DC controller designed for demanding CPU power applications in high-end computer systems. It delivers over 35A from 1.1V to 4.5V with better than ±1% total accuracy from a +5V ±10% supply. Its excellent dynamic response corrects output transients caused by dynamically clocked CPUs.
This controller achieves over 90% efficiency using synchronous rectification and features pin-selectable switching frequencies of 300kHz, 600kHz, or 1MHz. High switching frequencies allow for smaller inductors and reduced output filter capacitor requirements, decreasing board area and system cost. The MAX1639ESE includes features such as current-mode control for fast transient response and cycle-by-cycle current-limit protection, short-circuit protection with foldback current limiting, crowbar overvoltage protection, internal digital soft-start, and a power-good output.
Available in a 16-pin narrow SOIC package, the MAX1639ESE is suitable for surface mount applications. Its operating temperature range is -40°C to 85°C, and it operates from a 4.5V to 5.5V supply voltage. The output is resistor-divider adjustable from 1.1V to 4.5V.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.78 | $0.78 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating voltage range is 4.5V to 5.5V.
The operating temperature range is -40°C to 85°C.
The switching frequency is pin-selectable for 300kHz, 600kHz, or 1MHz.
The MAX1639ESE can deliver over 35A of output current.
The output voltage is resistor-divider adjustable from 1.1V to 4.5V.
The output accuracy is better than ±1% over line and load.
The controller achieves greater than 90% efficiency using synchronous rectification.