Sp92875

Due to pin-compatibility with older National Semiconductor (now TI) parts, the SP92875 is used as a "drop-in" replacement for repairing legacy equipment like test measurement devices or 1990s-era audio mixers.

When used in buck configuration, the SP92875 acts as a non-synchronous step-down regulator. It is often found on factory automation sensor boards, providing 3.3V or 5V rails from a 24V industrial bus.

Since a public universal datasheet for the SP92875 is rare, the following specifications are aggregated from reverse-engineered schematics and field application reports: sp92875

| Parameter | Typical Value | | :--- | :--- | | Function | 4-Channel Constant Current LED Driver / Step-Down Converter | | Input Voltage | 4.5V to 40V (Wide input range for automotive/industrial) | | Output Current | Up to 1.5A per channel (Total 6A max) | | Switching Frequency | 150kHz to 500kHz (Adjustable via external resistor) | | Package Type | SOP-8 (Small Outline Package) or QFN-16 | | Operating Temp | -40°C to +125°C (Automotive grade) | | Key Features | PWM dimming, Over-temperature protection, Short-circuit lockout |

Disclaimer: Specifications vary by lot. Obtain the original datasheet from your supplier. Since a public universal datasheet for the SP92875

A major shift in SP92875 is the reduction of support for older hardware.

From known databases (example – not confirmed for SP92875): From known databases (example – not confirmed for

| Known SP part | Function | |---------------|-------------------------------| | SP6201 | Low‑dropout regulator (LDO) | | SP6641 | Boost converter | | SP3485 | RS‑485 transceiver | | SP0503 | ESD protection array |

If SP92875 follows that pattern, it could be an older power or interface IC.
Check archive sites: Alldatasheet.com, DatasheetArchive.com, Ultra Librarian.