IR3894MTR1PBF International Rectifier, IR3894MTR1PBF Datasheet - Page 35

• Manufacturer Part Number: IR3894MTR1PBF
• Description: 12A Highly Integrated Single-Input Voltage, Synchronous Buck Regulator in a PQFN package.
• Manufacturer: International Rectifier

Specifications of IR3894MTR1PBF

• Part Status: Active and Preferred
• Package: PQFN / 5 x 6
• Circuit: Single Output
• Iout (a): 12
• Switch Freq (khz): 0 - 1500
• Input Range (v): 1.0 - 16
• Output Range (v): 0.5 - 12
• Pbf: PbF Option Available

TYPICAL OPERATING WAVEFORMS
PVin = 12V, Vo = 1.2V, Iout = 0‐12A, Room Temperature, No Air flow
Figure 40: External frequency synchronization to 800kHz
Figure 38: Feed forward for Vin change from 6.8 to 16V,
from free running 600kHz, Ch
Figure 42: Voltage margining using Vref pin
35
voltage,Ch
Ch
1
:Vout
FEBRUARY 01, 2012 | DATA SHEET | Rev 3.0
Ch
1
:V
,
3
Ch3:P
:SW Node voltage
out
, Ch
Good,
4
:V
Ch
1
in
:V
4
o,
:V
Ch2:Rt/Sync
ref
Single‐Input Voltage, Synchronous Buck Regulator
- 35 -`
12A Highly Integrated SupIRBuck
Ch
Figure 43: Voltage tracking using Vp pin
Figure 39: Start/Stop using S_Ctrl Pin,
1
Figure 41: Over Voltage Protection,
:V
out
Ch
, Ch
1
Ch
‐Vout, Ch3:P
2
:Enable, Ch
1
:Vout, Ch
3
Good
3
:PGood
: P
,Ch
Good,
4
Ch
:V
IR3894
p
4
:S_Ctrl
PD‐97745