12A Highly Integrated SupIRBuckTM
IR3476
FEATURES
• Input Voltage Range: 3V to 27V • Output Voltage Range: 0.5V t...
12A Highly Integrated SupIRBuckTM
IR3476
FEATURES
Input Voltage Range: 3V to 27V Output Voltage Range: 0.5V to 12V Continuous 12A Load Capability Constant On‐Time Control Compensation Loop not Required Excellent Efficiency at Very Low Output Currents Programmable Switching Frequency and Soft Start Thermally Compensated Over Current Protection Power Good Output Precision Voltage Reference (0.5V, +/‐1%) Enable Input with Voltage Monitoring Capability Pre‐bias Start Up Thermal Shut Down Under/Over Voltage Fault Protection Forced Continuous Conduction Mode Option Small, Low Profile 5mm x 6mm QFN Package
DESCRIPTION
The IR3476 SupIRBuckTM is an easy‐to‐use, fully integrated and highly efficient DC/DC voltage
regulator. The onboard constant on time hysteretic controller and MOSFETs make IR3476 a space‐efficient solution that delivers up to 12A of precisely controlled output voltage. Programmable switching frequency, soft start, and thermally compensated over current protection allows for a very flexible solution suitable for many different applications and an ideal choice for battery powered applications. Additional features include pre‐bias startup, very precise 0.5V reference, under/over voltage shutdown, thermal protection, power good output, and enable input with voltage monitoring capability.
APPLICATIONS
Notebook and Desktop Computers Consumer Electronics – STB, LCD, TV, Printers 12V and 24V...