IR3889 Datasheet | Infineon

Opti MOS™ IPOL 30 A single-voltage synchronous Buck regulator Features - Single 4.3 V to 17 V application or Wide Input Voltage Range from 2.0 V to 17 V with an External VCC - Precision Reference Voltage (0.8 V +/- 0.5%) - Enhanced Fast COT Engine Stable with Ceramic Output Capacitors - Optional Forced Continuous Conduction Mode and Diode Emulation for Enhanced Light Load Efficiency - Programmable Switching Frequency from 600 k Hz to 2 MHz - Monotonic Start-Up with Four Selectable Soft-Start Time & Enhanced Pre-Bias Start-Up - Thermally pensated Internal Over Current Protection with Four Selectable Settings - Enable input with Voltage Monitoring Capability & Power Good Output - Thermal Shut Down - Operating Temp: -40 °C < Tj < 125 °C - Small Size: 5 mm x 6 mm PQFN - Halogen-free and Ro HS2 pliant with Exemption 7a Potential applications - Server Applications - Storage Applications - Tele & Data Applications - Distributed Point of Load Power Architectures Product validation Qualified for industrial applications according to the relevant tests of JEDEC47/20/22 Description The IR3889 is an easy-to-use, fully integrated dc - dc Buck regulator. The onboard PWM controller and Opti MOS™ FETs with integrated bootstrap diode make IR3889 a small footprint solution, providing high-efficient power delivery. Furthermore, it uses a fast Constant On-Time (COT) control scheme, which simplifies the design efforts and achieves fast control response. The IR3889 has an internal low dropout voltage regulator, allowing operations with a single supply. It can also operate with an external bias supply, with an extended operating input voltage (PVin) range from 2.0 V to 17 V. The IR3889 is a versatile regulator, offering programmable switching frequency from 600 k Hz to 2 MHz, four selectable current limits, four selectable soft-start time, Forced Continuous Conduction Mode (FCCM) and Diode Emulation Mode (DEM) operation. It also Features important protection...