The IR3640M is a synchronous Buck PWM controller designed for performance demanding DC/DC applications. The single loop voltage mode architecture simplifies design while delivery precise output voltage regulation and fast transient response. Because of its wide input and output voltage range it can be used in a large variety of point of load applications within a system and across different markets. The part is designed to drive a pair of N-Channel MOSFETs from 250kHz to 1.5Mhz switching frequency giving designers the flexibility to optimize the solution for best efficiency or smallest footprint. The output voltage can be precisely regulated from as low as 0.7V within a wide input voltage range.
The IR3640MPBF is a synchronous buck PWM controller designed for point‑of‑load power architectures, server, netcom and gaming applications. It offers a wide input voltage range (1.5 V‑24 V), programmable soft‑start, over‑current protection, and integrated MOSFET drivers.
The device is supplied in a 20‑lead MLPQ package (8 mm × 4 mm) and operates from –40 °C to 125 °C. Electrical specifications include up to 1.5 MHz switching frequency, precise voltage regulation down to 0.7 V, and various protection features such as thermal shutdown and UVLO.
| Input voltage range | 1.5 V to 24 V |
|---|---|
| Output voltage range | 0.7 V to 0.9 × Vin |
| Maximum switching frequency | 1.5 MHz |
| Operating temperature range | -40 °C to 125 °C |
| Package | 20‑Lead MLPQ (8 mm × 4 mm) |
The device operates with an input voltage from 1.5 V to 24 V.
It is supplied in a 20‑lead MLPQ package measuring 8 mm × 4 mm.
The controller can be programmed up to a switching frequency of 1.5 MHz.
It is rated for operation from –40 °C to 125 °C.