ISL6440 is a high-performance, dual-output PWM controller that converts DC input power into various system power voltages required for multiple applications. It features a wide input voltage range, asynchronous PWM operation, no external current sensing resistor, etc., making it suitable for dual-output power supplies, xDSL modems/routers, DSP, ASIC, and FPGA power supplies, etc.
The ISL6440 PWM controller provides dual‑channel regulation, independent output control, and built‑in over‑current and undervoltage protection. It operates from a wide input range and includes a PGOOD output for system monitoring.
Typical applications include xDSL routers, DSP/ASIC power supplies, and other devices requiring precise current regulation and soft‑start functionality. The datasheet details pin assignments, electrical characteristics, and performance graphs for design reference. This manual is written in Chinese.
| Input voltage range | 5.6 V – 24 V |
|---|---|
| Output voltage range | 4.5 V – 5.6 V |
| Switching frequency | up to 300 kHz |
| Package | 24‑lead QSOP |
| Operating temperature range | -40 °C – 85 °C |
The device operates from 5.6 V up to 24 V.
The PWM controller can switch at up to 300 kHz.
It is supplied in a 24‑lead QSOP package.
The IC is rated from –40 °C to +85 °C.