IR3897MTRPBF International Rectifier, IR3897MTRPBF Datasheet - Page 33

• 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
Figure 33: Inductor node at 4A Load, Ch2‐LX
33
Ch
Figure 31: Start up with 1V pre bias,
0A Load, Ch
Figure 29: Start up at 4A Load,
FEBRUARY 02, 2012 |DATA SHEET | Rev 3.2
1
:V
in
, Ch
2
:V
o
, Ch
3
:PGood, Ch
2
:V
o
Single‐Input Voltage, Synchronous Buck Regulator
4
:Enable
- 33 -
4A Highly Integrated SupIRBuck
Ch
Figure 30: Start up at 4A Load,
Ch
Figure 32: Output Voltage Ripple
4A Load, Ch
Figure 34: Short Circuit Recovery,
1
:V
in
2
, Ch
:V
o
, Ch
2
:V
o
4
, Ch
:Iout(2A/Div)
TM
3
:PGood, Ch
2
:V
o
IR3897
4
:Vcc
PD‐97663