C3216X5R1E106M データシートの表示（PDF） - International Rectifier

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C3216X5R1E106M

USER GUIDE FOR IR3894 EVALUATION BOARD 1.2Vout

International Rectifier 

SupIRBuckTM

IRDC3894-P1V2

USER GUIDE FOR IR3894 EVALUATION BOARD

DESCRIPTION

1.2Vout

The IR3894 is a synchronous buck

converter, providing a compact, high

performance and flexible solution in a small

5mm X 6 mm Power QFN package.

Key features offered by the IR3894 include

internal Digital Soft Start/Soft Stop, precision

0.5Vreference voltage, Power Good,

thermal protection, programmable switching

frequency, Enable input, input under-voltage

lockout for proper start-up, enhanced line/

load regulation with feed forward, external

frequency synchronization with smooth

clocking, smart internal LDO and pre-bias

start-up.

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 and the current limit is thermally

compensated.

This user guide contains the schematic and bill

of materials for the IR3894 evaluation board.

The guide describes operation and use of the

evaluation board itself. Detailed application

information for IR3894 is available in the

IR3894 data sheet.

BOARD FEATURES

• Vin = +12V (+ 13.2V Max)

•Vout = +1.2V @ 0- 12A

• Fs=600kHz

• L= 0.51uH

• Cin= 4x10uF (ceramic 1206) + 1X330uF (electrolytic)

• Cout=8x22uF (ceramic 0805)

12/22/2011

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