PD-97659
IR3842WMPbF
Recommended Operating Conditions
C
Symbol
V in
V cc
Boot to SW
V o
I o
Fs
T j
Definition
Input Voltage
Supply Voltage
Supply Voltage
Output Voltage
Output Current
Switching Frequency
Junction Temperature
Min
1.5
4.5
4.5
0.7
0
225
-40
Max
16
5.5
5.5
0.9*Vin
4
1650
125
Units
V
A
kHz
o
Electrical Specifications
Unless otherwise specified, these specification apply over 4.5V< V cc <5.5V, V in =12V, 0 o C<T j < 125 o C.
Typical values are specified at T a = 25 o C.
Parameter
Symbol
Test Condition
Min
TYP
MAX
Units
Power Loss
Power Loss
P loss
Vcc=5V, V in =12V, V o =1.8V, I o =4A,
Fs=600kHz, L=1.5uH, Note4
0.64
W
MOSFET R ds(on)
V Boot -V sw =5V, I D =6A, Tj= 25 C
Top Switch
R ds(on)_Top
o
24.5
34.0
V cc =5V, I D =6A, Tj= 25 C
Bottom Switch
R ds(on)_Bot
o
14.3
19
m Ω
Reference Voltage
0 C<Tj<125 C
Feedback Voltage
Accuracy
V FB
o o
-1.0
0.7
+1.0
V
-40 C<Tj<125 C, Note3
o o
-2.0
+2.0
%
Supply Current
V CC Supply Current
(Standby)
V cc Supply Current (Dyn)
I CC(Standby)
I CC(Dyn)
SS=0V, No Switching, Enable low
SS=3V, Vcc=5V, Fs=500kHz
Enable high
10
500
μ A
mA
Under Voltage Lockout
V CC -Start-Threshold
V CC -Stop-Threshold
Enable-Start-Threshold
V CC _UVLO_Start
V CC _UVLO_Stop
Enable_UVLO_Start
Vcc Rising Trip Level
Vcc Falling Trip Level
Supply ramping up
3.95
3.65
1.14
4.15
3.85
1.2
4.35
4.05
1.36
V
Enable-Stop-Threshold
Enable leakage current
Enable_UVLO_Stop
Ien
Supply ramping down
Enable=3.3V
0.9
1.0
1.06
15
μ A
Rev 13.0
5
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