Features

• Single 4.3 V to 17 V application

• Precision Reference Voltage (0.6 V +/-0.5)

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

• Optional Forced Continuous Conduction Mode or Diode Emulation for Enhanced Light Load Efficiency

• Programmable Switching Frequency from 600 kHz to 2 MHz

• Enable input with Voltage Monitoring Capability & Power Good Output

• Monotonic Start-Up with Two Selectable Soft Start time & Enhanced Pre-Bias Start up

• Thermally compensated Internal Over Current Protection

• Thermal Shut Down

• Operating Junction Temp: -40 °C < Tj < 125 °C

• Small Size: 3.5 mm x 3.5 mm PQFN

• Halogen-free and RoHS Compliant

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 IR3823A is an easy-to-use, fully integrated dc - dc Buck regulator. The onboard PWM controller and MOSFETs

with integrated bootstrap diode make IR3823A 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

provides fast control response.

The IR3823A has an internal low dropout voltage regulator, allowing operation with a single supply. The IR3823A

is a versatile regulator, offering programmable switching frequency from 600 kHz to 2 MHz, two selectable soft

start times, 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 limit,

over voltage and under voltage protection, and thermal shutdown to give required system level security in the

event of fault conditions.