XL2917-8 – Frequency-to-Voltage Converter – Xinluda

The Xinluda XL2917-8 is a monolithic frequency-to-voltage (F/V) converter in an SOIC-8 package, an LM2917-8-equivalent tachometer IC with a charge-pump input and high-gain op amp output. Available for RFQ at Pacific Component Xchange.

The XL2917-8 from Xinluda is a monolithic frequency-to-voltage (F/V) converter, functionally equivalent to the industry-standard LM2917-8. It combines a charge-pump tachometer front end with a high-gain operational amplifier output, making it ideal for converting an input frequency or pulse train into a proportional DC voltage. The 8-pin version internally connects the negative comparator input (IN-) to ground and shares the charge-pump output and non-inverting op amp input (CP2/IN+) on a common pin, simplifying tachometer and speed-sensing designs in a compact SOIC-8 footprint.

Output swings to ground for a zero-frequency input, and the charge-pump tachometer offers frequency doubling for low output ripple. The floating-transistor op amp output can drive a ground- or supply-referred load directly, enabling the IC to operate relays, lamps, or other loads when input frequency crosses a programmed threshold.

Key Features

• Frequency-to-voltage (F/V) converter / tachometer function (LM2917-8 equivalent)
• Charge-pump tachometer input with frequency doubling for low ripple
• High-gain operational amplifier with floating-transistor output
• Op amp output capable of driving a ground- or supply-referred load up to 50 mA
• Output transistor collector may be taken above VCC up to a maximum VCE of 28 V
• Typical linearity of +/-0.3%
• Output swings to ground for zero-frequency input
• Ground-referenced tachometer input (IN- internally tied to ground on 8-pin version)
• Operating temperature range -40 C to +85 C
• RoHS compliant, MSL 3, SOIC-8 surface-mount package

Applications

• Motor and fan speed (tachometer) sensing and control
• Frequency-to-voltage conversion in instrumentation
• Over/under speed detection and switching
• Speedometers and rotational sensing
• Frequency-threshold relay and lamp drivers

Why Source XL2917-8 from Pacific Component Xchange

The XL2917-8 is a specialty Xinluda part with limited authorized-distributor availability, making it difficult to source through mainstream channels. Pacific Component Xchange is an independent distributor specializing in hard-to-find and obsolete power-management ICs, converters, and optocouplers. We help engineers and buyers secure verified, authentic stock for parts that are otherwise unavailable. Whether you need a single prototype quantity or full-reel volumes for production, our team will quote competitively and confirm authenticity, date codes, and lead time. Request a quote (RFQ) today for the XL2917-8 and let our global sourcing network and worldwide shipping get you the components you need.