Key facts
- Manuals
- 2
- Languages
- ZH
- Last added
- 2012-03-09
Featured XPT manuals

XPT XPT8364 Chip User Manual
This manual describes the XPT8364, a four‑channel ultra‑low‑drop constant‑current LED driver. It details the chip’s main features, such as 40 mV drop at 20 mA, PWM dimming up to 50 kHz, over‑heat and ESD protection, and a QFN3×3‑16L package suitable for -40 °C to 85 °C operation.
The document includes pin descriptions, maximum limits, performance specifications, typical application circuits, and timing diagrams to help designers integrate the device into mobile phones, PDAs, and other portable electronics. This manual is written in Chinese.
Covers: Chip Function Description · Chip Features · Package and Pin Description · Maximum Limits · Performance Specifications · Application Notes

XPtek XPT4068 Audio Power Amplifier Chip User Manual
The XPT4068 is a dual‑channel bridge audio power amplifier chip that operates from a 2.5 V‑5.5 V supply and can deliver up to 3 W into a 4 Ω load. It includes low‑power shutdown control, stereo headphone drive mode, and noise‑suppression features, making it suitable for mobile phones, PDAs, MP3/MP4 players and desktop audio equipment.
The manual provides a complete description of the chip’s functions, package options (QFN 3×3‑16L and SOP‑16), pin assignments, electrical limits, performance parameters, and typical application circuits. Design notes cover gain setting, power‑down control, bypass capacitors, and headphone‑control circuitry. This manual is written in Chinese.
Covers: Chip Function Description · Main Features · Typical Application Circuit · Package and Pin Description · Maximum Limits · Digital Logic Characteristics
Latest XPT manuals
XPT XPT8364 Chip User Manual
User Manual 10 pages · 332 KB · ZHThe XPT8364 chip user manual provides functional description, specifications, pinout, and application guidelines for the four‑channel LED driver.
XPtek XPT4068 Audio Power Amplifier Chip User Manual
User Manual 11 pages · 555 KB · ZHThe XPtek XPT4068 user manual details features, specifications, pinout and application circuits for this dual‑channel bridge audio power amplifier.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in XPT manuals
What is the maximum LED current per channel?
Each LED channel can drive up to 20 mA.
What is the voltage drop across the driver at 20 mA?
The driver drops only 40 mV at a 20 mA LED current.
What supply voltage range does the XPT4068 support?
The XPT4068 operates from a supply voltage of 2.5 V to 5.5 V.
What is the maximum output power into a 4 Ω load?
At a 5 V supply the chip can deliver up to 3 W into a 4 Ω load.
