IRDC3821 International Rectifier, IRDC3821 Datasheet - Page 5

• Manufacturer Part Number: IRDC3821
• Description: BOARD EVAL SYNC BUCK CONVERTER
• Manufacturer: International Rectifier

Specifications of IRDC3821

• Lead Free Status / Rohs Status: Not Compliant

11/04/08
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
Supply Current
Supply Current
j
in
cc
c
o
-Start-Threshold
-Stop-Threshold
-Hysteresis
-Start-Threshold
-Stop-Threshold
-Hysteresis
Supply Current (Static)
Supply Current
Note1
Parameter
ds(on)
Input Voltage
Supply Voltage
Supply Voltage
Output Voltage
Output Current
Junction Temperature
Definition
V
V
V
V
CC
CC
C
Symbol
C
I
R
R
CC(Dynamic)
I
_UVLO(R)
_UVLO(F)
I
C(Dynamic)
_UVLO(R)
_UVLO(F)
I
CC(Static)
ds(on)_Top
ds(on)_Bot
C(Static)
P
V
loss
FB
a
= 25
o
C.
Vcc=V
L=1.0uH, Note3
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
D
D
o
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
o
Vin + 5V
C
o
C,
Min
2.5
4.5
0.6
-40
0
Note2
cc
cc
=V
=V
o
o
C
C
in
in
=12V.
=12V.
o
=1.8V, I
cc
=V
o
=7A,
c
=12V, 0
Max
125
21
14
28
12
-1.35
7
Min
0.15
2.85
0.15
-1.5
4.0
3.7
3.1
o
IR3821MPbF
C<T
TYP
0.25
10.5
10.5
j
0.6
4.5
0.2
10
18
18
(Ic)< 105
2.1
MAX
+1.35
13.40
13.40
+1.5
PD-60331
3.25
0.25
4.4
4.1
0.3
3.5
13
25
25
Units
o
7
C.
o
V
A
C
Units
mΩ
mA
W
%
%
V
V
5