IRDC3802A Datasheet, PDF (1/16 Pages) International Rectifier – USER GUIDE FOR IR3802A EVALUATION BOARD

IRDC3802A
SupIRBuck^TM
USER GUIDE FOR IR3802A EVALUATION BOARD
DESCRIPTION
The IR3802A 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 IR3802A
include programmable soft-start ramp,
precision 0.6V reference voltage,
programmable thermal protection, fixed
300kHz 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 IR3802A evaluation
board. The guide describes operation and
use of the evaluation board itself. Detailed
application information for IR3802A is
available in the IR3802A data sheet.
BOARD FEATURES
• V_in = +12V (13.2V Max)
• V_out = +3.3V @ 0- 6A
• L = 3.3uH
• C_in= 1x10uF (ceramic 1206), 1x47uF (PosCap, 16V)
• C_out= 1x22uF (ceramic 0805), 1x220uF/6.3V (SP-Cap)
Rev 0.1
6/9/2008
1