IR3843AMTR1PBF International Rectifier, IR3843AMTR1PBF Datasheet - Page 5

• Manufacturer Part Number: IR3843AMTR1PBF
• Description: IC REG SYNC BUCK 3A 15-QFN
• Manufacturer: International Rectifier
• Series: SupIRBuck™r
• Type: Step-Down (Buck)r

Specifications of IR3843AMTR1PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.7 ~ 18.9 V
• Current - Output: 3A
• Frequency - Switching: 225kHz ~ 1.32MHz
• Voltage - Input: 1.5 ~ 21 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 15-PowerVQFN
• Power - Output: 682mW
• Part Status: Active
• Package: PQFN / 5 x 6
• Circuit: Single Output
• Iout (a): 3
• Switch Freq (khz): 250 - 1200
• Input Range (v): 1.5 - 21
• Output Range (v): 0.7 - 0.9*Vin
• Ocp Otp Uvlo Pre-bias Soft Start And: PGOOD + EN + SEQ
• Digital Home Media: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: IR3843AMTR1PBFTR

* SW must not exceed the Abs Max Rating (25V)
Electrical Specifications
Unless otherwise specified, these specification apply over 4.5V< V
Typical values are specified at T
Recommended Operating Conditions
Power Loss
Power Loss
MOSFET R
Top Switch
Bottom Switch
Reference Voltage
Feedback Voltage
Accuracy
Supply Current
V
V
V
V
Boot to SW
V
I
Fs
T
Under Voltage Lockout
V
V
Enable-Start-Threshold
Enable-Stop-Threshold
Enable leakage current
CC
cc
o
j
CC
CC
in
cc
o
Rev 13.0
Symbol
Supply Current (Dyn)
-Start-Threshold
-Stop-Threshold
Supply Current (Standby)
Parameter
ds(on)
Input Voltage
Supply Voltage
Supply Voltage
Output Voltage
Output Current
Switching Frequency
Junction Temperature
Definition
V
V
Enable_UVLO_Start
Enable_UVLO_Stop
Ien
CC
CC
_UVLO_Start
_UVLO_Stop
Symbol
R
I
R
CC(Standby)
I
ds(on)_Top
ds(on)_Bot
CC(Dyn)
P
V
a
loss
FB
= 25
o
C.
Vcc=5V, V
Fs=600kHz, L=2.2uH, Note4
V
V
0
-40
SS=0V, No Switching, Enable low
SS=3V, Vcc=5V, Fs=500kHz
Enable high
Vcc Rising Trip Level
Vcc Falling Trip Level
Supply ramping up
Supply ramping down
Enable=3.3V
Boo t
cc
o
C<Tj<125
=5V, I
o
C<Tj<125
-V
sw
D
=5V, I
=3A, Tj=
Test Condition
in
=12V, V
o
C
D
o
C,
=3A, Tj=
Min
225
25
-40
1.5
4.5
4.5
0.7
Note3
0
o
o
C
=1.8V, I
25
o
C
o
=3A,
cc
<5.5V, V
0.9*Vin
Min
3.95
3.65
1.14
-1.0
-2.0
0.9
1320
Max
125
21*
5.5
5.5
3
in
IR3843AMPbF
=12V, 0
0.682
TYP
24.5
24.5
4.15
3.85
0.7
1.2
1.0
10
o
C<T
MAX
+1.0
+2.0
4.35
4.05
1.36
1.06
500
j
32
32
15
< 125
Units
PD-97509
kHz
o
V
A
C
o
C.
Units
mΩ
mA
μA
μA
W
%
V
V
5