IR3840MTRPBF International Rectifier, IR3840MTRPBF Datasheet - Page 24
IR3840MTRPBF
Manufacturer Part Number
IR3840MTRPBF
Description
IC REG SYNC SUPIRBUCK 12A 5X6QFN
Manufacturer
International Rectifier
Series
SupIRBuck™r
Type
Step-Down (Buck)r
Datasheet
1.IR3840MTR1PBF.pdf
(32 pages)
Specifications of IR3840MTRPBF
Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
0.7 ~ 14.4 V
Current - Output
12A
Frequency - Switching
250kHz ~ 1.5MHz
Voltage - Input
1.5 ~ 16 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
15-PowerVQFN
Power - Output
2.6W
Part Status
Active
Package
PQFN / 5 x 6
Circuit
Single Output
Iout (a)
12
Switch Freq (khz)
250 - 1500
Input Range (v)
1.5 - 16
Output Range (v)
0.7 - 0.9*Vin
Ocp Otp Uvlo Pre-bias Soft Start And
PGOOD + EN + SEQ
Server Storage
Yes
Routers Switches
Yes
Base Station Telecom
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
IR3840MTRPBF
Manufacturer:
IR
Quantity:
20 000
06/18/09
TYPICAL OPERATING WAVEFORMS
Vin=12.0V, Vcc=5V, Vo=1.8V, Io=0-12A, Room Temperature, No Air Flow
Fig. 21. Inductor node at 12A load
Fig. 19. Start up with 1.62V Pre
Bias, 0A Load, Ch
Fig. 17. Start up at 12A Load
Ch
1
:V
o
Ch
, Ch
4
Ch
:Enable
2
:V
3
:LX
in
, Ch
1
:V
o
, Ch
3
:V
ss
3
,
:V
SS
Fig. 20. Output Voltage Ripple, 12A
Ch
Fig. 22. Short (Hiccup) Recovery
1
Fig. 18. Start up at 12A Load,
:V
o
, Ch
Ch
load Ch
1
2
:V
:V
out
in
, Ch
, Ch
IR3840MPbF
2
: V
3
:V
3
:V
out
ss
SS
, Ch
4
:V
PGood
24