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)

 Enhanced Fast COT engine stable with Ceramic Output Capacitors and No External Compensation

 Forced Continuous Conduction Mode

 The Switching Frequency is set at 800 kHz internally

 Monotonic Start-Up with an internal Soft-Start Time & Enhanced Pre-Bias Start-Up

 Thermally Compensated Internal Over Current Protection

 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

Potential applications

 Server Applications

 Storage Applications

 Telecom & Datacom Applications

 Distributed Point of Load Power Architectures

Product validation

Qualified for industrial applications according to the relevant tests of JEDEC47/20/22

Description

The IR3888A/B is an easy-to-use, fully integrated dc - dc Buck regulator. The onboard PWM controller and

OptiMOS™ FETs with integrated bootstrap diode make IR3888A/B a small footprint solution, providing high

efficiency power delivery. Furthermore, it uses a fast Constant On-Time (COT) control scheme, which simplifies

design efforts and achieves fast control response.

The IR3888A/B has an internal low dropout voltage regulator, allowing operation with a single supply. It can also

operate with an external bias supply, extending the operating input voltage (PVin) range.

It 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.