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IR3840AMPBF Datasheet(PDF) 6 Page - International Rectifier

Part # IR3840AMPBF
Description  HIGHLY EFFICIENT INTEGRATED 14A SYNCHRONOUS BUCK REGULATOR
Download  34 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR3840AMPBF Datasheet(HTML) 6 Page - International Rectifier

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Rev 11.0
PD-97505
IR3840AMPbF
6
Electrical Specifications (continued)
Unless otherwise specified, these specification apply over 4.5V< V
cc<5.5V, Vin=12V, 0
oC<T
j< 125
oC.
Typical values are specified at T
a = 25
oC.
Parameter
Symbol
Test Condition
Min
TYP
MAX
Units
Oscillator
Rt Voltage
0.665
0.7
0.735
V
Rt=59K
225
250
275
Rt=28.7K
450
500
550
Frequency
FS
Rt=14.3K, Note4
900
1000
1100
kHz
Ramp Amplitude
Vramp
Note4
1.8
Vp-p
Ramp Offset
Ramp (os)
Note4
0.6
V
Min Pulse Width
Dmin(ctrl)
Note4
50
Fixed Off Time
Note4
130
200
ns
Max Duty Cycle
Dmax
Fs=250kHz
92
%
Error Amplifier
Input Offset Voltage
Vos
Vfb-Vseq,
Vseq=0.8V
-10
0
+10
mV
Input Bias Current
IFb(E/A)
-1
+1
Input Bias Current
IVp(E/A)
-1
+1
μA
Sink Current
Isink(E/A)
0.40
0.85
1.2
Source Current
Isource(E/A)
8
10
13
mA
Slew Rate
SR
Note4
7
12
20
V/
μs
Gain-Bandwidth Product
GBWP
Note4
20
30
40
MHz
DC Gain
Gain
Note4
100
110
120
dB
Maximum Voltage
Vmax(E/A)
Vcc=4.5V
3.4
3.5
3.75
V
Minimum Voltage
Vmin(E/A)
120
220
mV
Common Mode Voltage
Note4
0
1
V
Soft Start/SD
Soft Start Current
ISS
Source
14
20
26
μA
Soft Start Clamp Voltage
Vss(clamp)
2.7
3.0
3.3
Shutdown Output Threshold
SD
0.3
V
Over Current Protection
Fs=250kHz
20.8
23.6
26.4
OCSET Current
IOCSET
Fs=500kHz
43
48.8
54.6
μA
OC Comp Offset Voltage
VOFFSET
Note4
-10
0
+10
mV
SS off time
SS_Hiccup
4096
Cycles
Bootstrap Diode
Forward Voltage
I(Boot)=30mA
180
260
470
mV
Deadband
Deadband time
Note4
5
10
30
ns


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