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520 pcs
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520 pcs | On Request | 1 | On Request | On Request | 07+ | On Request | On Request |
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The UC2578DP is a PWM controller IC from Texas Instruments, designed for simple single-inductor buck step-down voltage regulation. It is capable of driving an external high-side NMOS switch and operates within a broad input voltage range of 14V to 72V, making it suitable for telecommunications bus voltages.
Key features include an integrated 100kHz internal oscillator, a 2V precision reference, and an under-voltage lockout (UVLO) circuit. The controller also incorporates a soft-start function on power-up and an overcurrent shutdown feature followed by a soft start to manage input current during overload conditions. The output duty cycle can vary between 0% and 90% to accommodate wide input voltage and load variations.
This device simplifies the design of single-switch PWM buck converters by providing a floating high-side driver for an external N-channel MOSFET. It is available in a 16-SOIC package, suitable for surface mount applications.
The UC2578DP is intended for use in distributed power systems, offering a robust solution for power management designs requiring efficient step-down conversion.
| Qty | Low | High |
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| 1+ | $0.78 | $0.78 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The UC2578DP operates from a 14V to 72V input voltage range.
The internal oscillator frequency is typically 100kHz, with a range of 90kHz to 120kHz over temperature.
The maximum duty cycle for the UC2578DP is 90%.
The UC2578DP provides a positive output and is designed as a transistor driver for step-down buck converters.
The UC2578DP includes current limit and soft start control features.
The operating temperature range is -40°C to 85°C.
The UC2578DP is supplied in a 16-SOIC package for surface mounting.