IRDC3802 Datasheet, PDF (1/16 Pages) International Rectifier – USER GUIDE FOR IR3802 EVALUATION BOARD

IRDC3802
SupIRBuck^TM
USER GUIDE FOR IR3802 EVALUATION BOARD
DESCRIPTION
The IR3802 is a synchronous buck
converter, providing a compact, high
performance and flexible solution in a
small 5mmx6mm Power QFN package.
Key features offered by the IR3802
include programmable soft-start ramp,
precision 0.6V reference voltage, thermal
protection, fixed 600kHz switching
frequency requiring
no external
component, input under-voltage lockout
for proper start-up, and pre-bias start-up.
An output over-current protection function is
implemented by sensing the voltage
developed across the on-resistance of the
synchronous rectifier MOSFET for optimum
cost and performance.
This user guide contains the schematic and
bill of materials for the IR3802 evaluation
board. The guide describes operation and
use of the evaluation board itself. Detailed
application information for IR3802 is
available in the IR3802 data sheet.
BOARD FEATURES
• V_in = +12V (13.2V Max)
• V_out = +3.3V @ 0- 4A
• L = 3.3uH
• C_in= 1x10uF (ceramic 1206)
• C_out= 1x22uF (ceramic 0805), 1x220uF/6.3V (SP-Cap)
Rev 0.1
6/16/2008
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