ir3841 International Rectifier Corp., ir3841 Datasheet - Page 24

• Manufacturer Part Number: ir3841
• Description: Integrated 8a Synchronous Buck Regulator
• Manufacturer: International Rectifier Corp.

Fig. 19. Start up with 1.62V Pre Bias, 0A
TYPICAL OPERATING WAVEFORMS
Vin=12.0V, Vcc=5V, Vo=1.8V, Io=0-8A, Room Temperature, No Air Flow
Ch
02/09/09
1
Fig. 21. Inductor node at 8A load
:V
Fig. 17. Start up at 8A Load
o
, Ch
Load, Ch
2
:V
in
, Ch
Ch
2
:V
3
3
:LX
o
:V
, Ch
ss
, Ch
3
:V
4
SS
:Enable
Fig. 20. Output Voltage Ripple, 8A load
Fig. 22. Short (Hiccup) Recovery
Ch
1
:V
Fig. 18. Start up at 8A Load,
o
, Ch
Ch
1
2
:V
:V
Ch
IR3841MPbF
out
in
1
, Ch
: V
, Ch
out ,
3
:V
2
:V
ss
ss
, Ch
4
:V
PGood
24