IR3831W is an easy-to-use, fully integrated and highly efficient DC/DC regulator. The MOSFETS co-packaged with the on-chip PWM controller make IR3831W a space- efficient solution, providing accurate power delivery for DDR memory applications. IR3831W is configured to generate termination voltage (VTT) for DDR memory applications. IR3831W offers programmability of start up time, switching frequency and current limit while operating in wide input and output voltage range. The switching frequency is programmable up to 1.5 MHz.
The IR3831WMPbF is a highly efficient SupiRBuck™ DC/DC regulator with a wide input voltage range of 1.5 V to 16 V and a programmable output voltage from 0.6 V to 0.9 × Vin. It delivers up to 8 A continuous load current and includes integrated protection functions such as over‑current protection, thermal shutdown, and a programmable soft‑start.
The datasheet details the pin functions, recommended operating conditions, electrical specifications, and typical performance curves. It also provides package information (5 mm × 6 mm Power QFN, 0.9 mm height) and stencil design guidelines for PCB assembly.
| Input Voltage Range | 1.5 V to 16 V |
|---|---|
| Output Voltage Range | 0.6 V to 0.9 × Vin |
| Continuous Load Current | 8 A |
| Switching Frequency (programmable) | 250 kHz to 1.5 MHz |
| Operating Temperature Range | -40 °C to 125 °C |
| Package | 5 mm × 6 mm Power QFN, 0.9 mm height |
| Power‑Good Output | Open‑drain, pull‑up required |
The device operates from 1.5 V up to 16 V input voltage.
It can provide up to 8 A of continuous load current.
The regulator is supplied in a 5 mm × 6 mm Power QFN package with a 0.9 mm height.
The switching frequency can be programmed from 250 kHz up to 1.5 MHz.