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IR3831MPBF 데이터시트(PDF) 6 Page - International Rectifier

부품명 IR3831MPBF
상세설명  HIGHLY EFFICIENT INTEGRATED SYNCHRONOUS BUCK REGULATOR FOR DDR APPLICATIONS
PDF  31 Pages
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제조업체  IRF [International Rectifier]
홈페이지  http://www.irf.com
Logo IRF - International Rectifier

IR3831MPBF 데이터시트(HTML) 6 Page - International Rectifier

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11/05/10
6
IR3831MPbF
Electrical Specifications (continued)
Unless otherwise specified, these specification apply over 4.5V< V
cc<5.5V, Vp=0.6V, Vin=12V,
0oC<T
j< 125
oC. Typical values are specified at T
a = 25
oC.
Parameter
Symbol
Test Condition
Min
TYP
MAX
Units
Oscillator
Rt Voltage
0.625
0.7
0.775
V
Rt=59K
225
250
275
Rt=28.7K
450
500
550
Frequency
FS
Rt=9.31K, Note4
1350
1500
1650
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-Vp
Vp=0.6V
-5
0
+5
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
12
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
3.7
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
Fs=500kHz
43
48.8
54.6
OCSET Current
IOCSET
Fs=1500kHz
136
154
172
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



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