IR3897 IRF [International Rectifier], IR3897 Datasheet - Page 36

• Manufacturer Part Number: IR3897
• Description: 4A HIGHLY INTEGRATED SUPLRBUCK
• Manufacturer: IRF [International Rectifier]

TYPICAL OPERATING WAVEFORMS
Vin = 12V, Vo = 1.2V, Iout = 0‐4A, Room Temperature, No Air Flow
Figure 36: Inductor node at 4A Load, Ch2‐LX
36
Ch
Figure 34: Start up with 1V pre bias,
0A Load, Ch
Figure 32: Start up at 4A Load,
AUGUST 08, 2012 |DATA SHEET | Rev 3.3
1
:V
in
, Ch
2
:V
o
, Ch
3
:PGood, Ch
2
:V
o
Single‐Input Voltage, Synchronous Buck Regulator
4
:Enable
- 36 -
4A Highly Integrated SupIRBuck
Ch
Figure 33: Start up at 4A Load,
Ch
Figure 35: Output Voltage Ripple
4A Load, Ch
Figure 37: 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