IR3838MTR1PBF Datasheet, PDF (1/35 Pages) International Rectifier – HIGHLY INTEGRATED 10A SINGLE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR

PD97512
IR3838MPbF
SupIRBuck^TM
HIGHLY INTEGRATED 10A
SINGLE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
Features
Description
• Greater than 96% Maximum Efficiency
The IR3838 SupIRBuck^TM is an easy-to-use, fully
• Single 16V Application
integrated and highly efficient DC/DC regulator.
• Single 5V Application
The onboard PWM controller and MOSFETs
• Wide Output Voltage Range: 0.6V to 0.9*Vin
make IR3838 a space-efficient solution, providing
•
•
•
Continuous 10A Load Capability
Programmable Switching Frequency up to 1.5MHz
Internal Digital Soft-Start
accurate power delivery for low output voltage
applications.
• Enable Input with Voltage Monitoring Capability
IR3838 is a versatile regulator which offers
• Hiccup Mode Over Current Protection
programmability of switching frequency and
• Internal LDO
current limit while operates in wide input and
• External Synchronization
output voltage range.
• Enhanced PreBias Start up
The switching frequency is programmable from
• External Reference for Margining Purposes
250kHz to 1.5MHz for an optimum solution.
• Input for Tracking Applications
• Integrated MOSFET Drivers and Bootstrap Diode ^{It also features important protection functions,}
• Operating Junction Temp: -40^oC <Tj<125^oC
such as Pre-Bias startup, hiccup current limit and
• Thermal Shut Down
thermal shutdown to give required system level
• Power Good Output with tracking capability
security in the event of fault conditions.
• Over Voltage Detection Feature
IR3838 offers margining capability through Vref
• Pin Compatible with 6A and 14A Versions
pin. During the margining operation, PGood
• Small Size 5mmx6mm PQFN, 0.9 mm Height
tracks Vref via feedback to ensure correct status
• Lead-free, Halogen-free and RoHS Compliant
of the output voltage.
Applications
• Netcom and Telecom Applications
• Data Center Applications
• Distributed Point of Load Power Architectures
The internal LDO enables the device to operate
from a single supply. This internal LDO can be
bypassed when an external bias voltage is
available.
Fig. 1. Typical application diagram
Rev 1.41
1