L6728AH is a high frequency single-phase PWM controller with Power Good features. It has flexible power supply ranging from 5V to 12V, with power conversion input as low as 1.5V. It has an internal reference of 0.8V and output voltage accuracy of 0.8%. It also features high-current integrated drivers, Power Good output, sensorless and programmable OCP, OV/UV protections, VSEN disconnection protection, and adjustable output voltage. The device is suitable for memory and termination supply, subsystem power supply (MCH, IOCH, PCI), CPU and DSP power supply, distributed power supply, and general DC/DC converters.
The L6728AH is a single-phase step-down controller with integrated high-current drivers designed to realize general DC-DC converters using a compact VFDFPN 10 package. It supports a flexible power supply from 5 V to 12 V and can handle power conversion inputs as low as 1.5 V. The device features an internally fixed oscillator at 600 kHz and provides complete control logic and protection, including programmable over-current protection and over/under-voltage protections.
| Supply voltage range | 5 V to 12 V |
|---|---|
| Power conversion input | 1.5 V |
| Output voltage accuracy | ±0.8% |
| Switching frequency | 600 kHz |
| Maximum duty cycle | 67% |
| Maximum junction temperature | 150 °C |
The oscillator is internally fixed to 600 kHz.
It is programmed by connecting a resistor from the LGATE/OC pin to GND.
The device is available in a VFDFPN 10 package.