IRDC3843 International Rectifier, IRDC3843 Datasheet - Page 8
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IRDC3843
Manufacturer Part Number
IRDC3843
Description
BOARD, EVALUATION, IR3843
Manufacturer
International Rectifier
Type
DC-DC Voltage Regulatorr
Datasheet
1.IRDC3843.pdf
(16 pages)
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
8