This datasheet introduces the features and characteristics of the IR3832W SupIRBuckTM, including wide input voltage range, wide output voltage range, continuous 4A load capability, integrated bootstrap diode, high bandwidth E/A, etc.
The IR3832WMPbF synchronous buck regulator provides a wide input voltage range of 1.0 V to 16 V and delivers output voltages from 0.6 V up to 0.9 Vin, making it suitable for DDR2/DDR3 memory systems. It integrates MOSFETs, a bootstrap diode, and a PWM controller in a compact 5 mm × 6 mm QFN package (0.9 mm height) and operates from –40 °C to 125 °C.
Key features include programmable switching frequency (250 kHz – 1.5 MHz), programmable over‑current protection, thermal shutdown, soft‑start, and a power‑good output. The device offers multiple protection functions and can be configured via external resistors and capacitors on dedicated pins.
| Input Voltage Range | 1.0 V to 16 V |
|---|---|
| Output Voltage Range | 0.6 V to 0.9 Vin |
| Switching Frequency | 250 kHz to 1.5 MHz (programmable) |
| Operating Temperature Range | -40 °C to 125 °C |
| Package | 5 mm × 6 mm Power QFN, 0.9 mm height |
| Protection Features | Thermal shutdown, over‑current protection, hiccup current limit, soft‑start |
The device operates with an input voltage from 1.0 V up to 16 V.
The switching frequency is set by connecting an external resistor from the dedicated pin to ground.
The regulator provides thermal shutdown, programmable over‑current protection, hiccup current limit, and a soft‑start function.
The Enable pin turns the regulator on and off.