IR3822 International Rectifier Corp., IR3822 Datasheet - Page 5

• Manufacturer Part Number: IR3822
• Description: Tm Supirbuck Highly Integrated 4a Wide-input Voltage, Synchronous Buck Regulator
• Manufacturer: International Rectifier Corp.

01/08/08
Recommended Operating Conditions
Electrical Specifications
Unless otherwise specified, these specification apply over Vin=V
Typical values are specified at T
Power Loss
Power Loss
MOSFET R
Top Switch
Bottom Switch
Reference Voltage
Feedback Voltage
Accuracy
Supply Current
V
V
(Static)
V
(Dynamic)
V
(Dynamic)
Under Voltage Lockout
V
V
V
V
V
V
V
V
V
V
I
T
CC
C
CC
C
Symbol
o
CC
CC
CC
C
C
C
j
Supply Current
Supply Current
in
cc
c
o
-Start-Threshold
-Stop-Threshold
-Hysteresis
-Start-Threshold
-Stop-Threshold
-Hysteresis
Note1
Supply Current (Static)
Supply Current
Parameter
ds(on)
Input Voltage
Supply Voltage
Supply Voltage
Output Voltage
Output Current
Junction Temperature
Definition
V
V
V
V
CC
CC
C
C
Symbol
I
R
R
I
CC(Dynamic)
_UVLO(R)
_UVLO(F)
I
C(Dynamic)
_UVLO(R)
_UVLO(F)
CC(Static)
I
ds(on)_Top
ds(on)_Bot
C(Static)
P
V
loss
FB
a
= 25
o
C.
Vcc=V
I
I
I
0
-40
SS=0V, No Switching
SS=0V, No Switching
SS=3V, V
V
SS=3V, V
V
Supply ramping up
Supply ramping down
Supply ramping up and down
Supply ramping up
Supply ramping down
Supply ramping up and down
o
D
D
o
=4A, L=1.5uH, Note3
o
o
=6A, Tj(MOSFET)=25
=6A, Tj(MOSFET)=25
C<Tj<105
=1.8V, Io=0A
=1.8V, Io=0A
o
C<Tj<105
in
=12V, Vc=24V, V
c
c
Test Condition
=24V, V
=24V, V
Vin + 5V
o
C
o
Min
C, Note2
2.5
4.5
0.6
-40
0
cc
cc
=V
=V
in
in
o
o
=12V.
=12V.
C
C
o
=1.8V,
cc
=V
c
=12V, 0
Max
125
21
14
28
12
-1.35
4
Min
0.15
2.85
0.15
-1.5
4.0
3.7
3.1
o
IR3822MPBF
C<T
TYP
0.25
j
0.6
4.5
0.2
(Ic)<105
1.5
10
15
15
18
18
MAX
+1.35
PD-60333
+1.5
3.25
0.25
o
4.4
4.1
0.3
3.5
13
22
22
Units
23
23
C.
7
o
V
A
C
Units
mA
mΩ
W
%
%
V
V
5