参数资料
型号: IRDC3831
厂商: International Rectifier
文件页数: 6/31页
文件大小: 0K
描述: BOARD EVAL SYNC BUCK CONVERTER
产品变化通告: (EP) Parts Discontinuation 25/May/2012
标准包装: 1
系列: SupIRBuck™
主要目的: DC/DC,步降
输出及类型: 1,非隔离
输出电压: 0.75V
电流 - 输出: 8A
输入电压: 12V
稳压器拓扑结构: 降压
频率 - 开关: 400kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: IR3831
IR3831MPbF
Electrical Specifications (continued)
Unless otherwise specified, these specification apply over 4.5V< V cc <5.5V, Vp=0.6V, 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
Oscillator
Rt Voltage
0.625
0.7
0.775
V
Frequency
Ramp Amplitude
Ramp Offset
Min Pulse Width
Fixed Off Time
Max Duty Cycle
F S
Vramp
Ramp (os)
Dmin(ctrl)
Dmax
Rt=59K
Rt=28.7K
Rt=9.31K, Note4
Note4
Note4
Note4
Note4
Fs=250kHz
225
450
1350
92
250
500
1500
1.8
0.6
50
130
275
550
1650
200
kHz
Vp-p
V
ns
%
Error Amplifier
Input Offset Voltage
Vos
Vfb-Vp
-5
0
+5
mV
Vp=0.6V
Input Bias Current
Input Bias Current
IFb(E/A)
IVp(E/A)
-1
-1
+1
+1
μ A
Sink Current
Isink(E/A)
0.40
0.85
12
Source Current
Isource(E/A)
8
10
13
mA
Slew Rate
Gain-Bandwidth Product
DC Gain
Maximum Voltage
SR
GBWP
Gain
Vmax(E/A)
Note4
Note4
Note4
Vcc=4.5V
7
20
100
3.4
12
30
110
3.5
20
40
120
3.7
V/ μ s
MHz
dB
V
Minimum Voltage
Common Mode Voltage
Vmin(E/A)
Note4
0
120
220
1
mV
V
Soft Start/SD
Soft Start Current
Soft Start Clamp Voltage
ISS
Vss(clamp)
Source
14
2.7
20
3.0
26
3.3
μ A
Shutdown Output
SD
0.3
V
Threshold
Over Current Protection
OCSET Current
I OCSET
Fs=250kHz
Fs=500kHz
Fs=1500kHz
20.8
43
136
23.6
48.8
154
26.4
54.6
172
μ A
OC Comp Offset Voltage
V OFFSET
Note4
-10
0
+10
mV
SS off time
SS_Hiccup
4096
Cycles
Bootstrap Diode
Forward Voltage
I(Boot)=30mA
180
260
470
mV
11/05/10
6
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