IR3888MTRPBFAUMA1

The IR3888 is an easy-to-use, fully integrated dc - dc Buck regulator. The onboard PWM controller and OptiMOS™ FETs with integrated bootstrap diode make IR3888 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 IR3888 has an internal low dropout voltage regulator, allowing operations with a single supply. It can also operate with an external bias supply, extending the operating input voltage (PVin) range. The IR3888 is a versatile regulator, offering programmable switching frequency from 600 kHz 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 functions, such as pre-bias start-up, thermally compensated current limits, over voltage and under voltage protection, and thermal shutdown to give required system level security in the event of fault conditions.

Applications

• Server Applications
• Storage Applications
• Telecom & Datacom Applications
• Distributed Point of Load Power Architectures

Key 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 (0.6 V +/-0.5%)
• Enhenced Fast COT engine stable with Ceramic Output Capacitors and No External Compensation
• Optional Forced Continuous Conduction Mode and Diode Emulation for Enhanced Light Load Efficiency
• Programmable Switching Frequency from 600 kHz to 2 MHz
• Monotonic Start-Up with Four Selectable Soft-Start Time & Enhanced Pre-Bias Start-Up
• Thermally Compensated 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: 6 mm x 5 mm PQFN
• Halogen-free and RoHS2 Compliant with Exemption 7a