ir3831 International Rectifier Corp., ir3831 Datasheet - Page 23
ir3831
Manufacturer Part Number
ir3831
Description
Synchronous Buck Regulator For Ddr Applications
Manufacturer
International Rectifier Corp.
Datasheet
1.IR3831.pdf
(31 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ir3831MTR1PBF
Manufacturer:
IR
Quantity:
20 000
Part Number:
ir3831MTRPBF
Manufacturer:
IR
Quantity:
20 000
02/20/09
TYPICAL OPERATING WAVEFORMS
Vin=12.0V, Vcc=5V, Vo=0.75V, Io=0- ±8A, Room Temperature, No Air Flow
Fig. 18: Inductor node at 8A, sourcing
Fig. 20: Output Voltage Ripple, 8A,
Fig. 16: Start up at 8A, sourcing
current Ch
sourcing current, Ch
current, Ch
Ch
3
:SS, Ch
1
:V
3
:SW, Ch
out
4
, Ch
:PGood
2
2
:V
: V
4
:I
DDQ
out
out
,
Fig. 19: Inductor node at -3A, sinking
Fig. 21: Short (Hiccup) Recovery
Fig. 17: Start up with Prebias, 0A
Load Ch
Ch
current, Ch
2
:V
out
1
, Ch
:V
out
3
, Ch
:V
3
IR3831MPbF
:SW , Ch
SS
2
:V
, Ch
DDQ,
4
:PGood
4
Ch
:I
out
3
:SS
23