IRDC3843 International Rectifier, IRDC3843 Datasheet - Page 8

• Manufacturer Part Number: IRDC3843
• Description: BOARD, EVALUATION, IR3843
• Manufacturer: International Rectifier
• Type: DC-DC Voltage Regulatorr

Specifications of IRDC3843

• Svhc: No SVHC (15-Dec-2010)
• Kit Features: Programmable Soft Start, Programmable Over Current Protection, Pre-Bias Start Up
• Mcu Supported Families: IR3843
• Silicon Manufacturer: International Rectifier
• Kit Contents: Board
• Features: Compact, High Performance And Flexible Solution, 600kHz Frequency
• Core Architecture: Power Management -
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

IRDC3843A
TYPICAL OPERATING WAVEFORMS
Vin=12.0V, Vcc=5V, Vo=1.8V, Io=0-3A, Room Temperature, No Air Flow
Fig. 7. Start up at 3A Load
Fig. 8. Start up at 3A Load,
Ch
:V
, Ch
:V
, Ch
:V
, Ch
:Enable
Ch
:V
, Ch
:V
, Ch
:V
, Ch
:V
1
in
2
o
3
ss
4
1
in
2
o
3
ss
4
PGood
Fig. 9. Start up with 1.62V Pre Bias, 0A
Fig. 10. Output Voltage Ripple, 3A load
Load, Ch
:V
, Ch
:V
Ch
: V
2
o
3
SS
2
o
Fig. 12. Short (Hiccup) Recovery
Fig. 11. Inductor node at 3A load
Ch
:V
, Ch
:V
Ch
:LX
2
o
3
SS
1
02/09/10
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