IR3897MTRPBF International Rectifier, IR3897MTRPBF Datasheet - Page 36

• Manufacturer Part Number: IR3897MTRPBF
• Description: 4A Highly Integrated Single-Input Voltage, Synchronous Buck Regulator in a PQFN package.
• Manufacturer: International Rectifier

Specifications of IR3897MTRPBF

• Part Status: Active and Preferred
• Package: PQFN / 4 x 5
• Circuit: Single Output
• Iout (a): 4
• Switch Freq (khz): 0 - 1500
• Input Range (v): 1.0 - 16
• Output Range (v): 0.5 - 12
• Pbf: PbF Option Available

TYPICAL OPERATING WAVEFORMS
Vin = 12V, Vo = 1.2V, Iout = 0‐4A, Room Temperature, No Air Flow
800KHz from free running 600KHz , Ch
Figure 40: Feed Forward for Vin change from 7 to16V
and back to 7V, Ch
Figure 42: External Frequency Synchronization to
Figure 44: Voltage Margining using Vref pin
Ch2‐Vo,Ch3‐Vref,Ch4‐PGood
36
FEBRUARY 02, 2012 |DATA SHEET | Rev 3.2
2
:V
o
, Ch
1
:LX, Ch
Single‐Input Voltage, Synchronous Buck Regulator
4
:Vin
2
:Vo,Ch4‐Rt/Sync Ch2‐Vo,Ch3‐PGood
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4A Highly Integrated SupIRBuck
Figure 41: Start/Stop using S‐Ctrl pin,
Ch
45: Voltage tracking using Vp pin
Ch2‐Vo,Ch3‐Vp,Ch4‐PGood
Figure 43: Over Voltage protection,
1
:Enable, Ch
2
:V
o
, Ch
TM
3
:pGood, Ch
IR3897
4
:S‐Ctrl
PD‐97663