參數(shù)資料
型號： IR3651STRPBF
廠商： International Rectifier
英文描述： HIGH VOLTAGE SYNCHRONOUS PWM BUCK CONTROLLER
中文描述： 高壓同步PWM降壓控制器
文件頁數(shù)： 5/19頁
文件大?。?/td> 397K
代理商： IR3651STRPBF
IR3651SP
b
F
10/11/2006
Recommended Operating Conditions
Parameter
SYM
Test Condition
Min TYP
MAX
Unit
s
Reference Voltage
Feedback Voltage
V
FB
0
o
C<Tj<125
o
C
-40
o
C<Tj<125
o
C,
Note1
1.25
V
-1.5
-3
+1.5
+1.5
%
%
Accuracy
Fb Voltage Line Regulation
LREG
5V<Vcc<12V
2.0
mV
Supply Current
V
CC
Supply Current (Stat)
I
CC(Static)
SS=0V, No Switching
6
7
mA
V
CC
Supply Current (Dyn)
I
CC(Dynamic)
F
s
=200kHz, C
LOAD
=1.5nF
6
7
mA
DRV
cc
Supply Current (Stat)
I
C(Static)
SS=0V, No Switching
0.3
0.5
mA
DRV
cc
Supply Current (Dyn)
I
C(Dynamic)
F
s
=200kHz, C
LOAD
=1.5nF
4
5
mA
Vb Supply Current (Stat)
I
b(Static)
I
b(Dynamic)
SS=0V, No Switching
0.3
0.5
mA
Vb Supply Current (Dyn)
F
s
=200kHz, C
LOAD
=1.5nF
4.5
5.5
mA
Under Voltage Lockout
V
CC
-Start-Threshold
V
CC
-Stop-Threshold
V
CC
-Hysteresis
DRV
cc
-Start-Threshold
DRV
cc
-Stop-Threshold
DRV
Cc
-Hysteresis
V
b
-Start-Threshold
V
b
-Stop-Threshold
V
b
-Hysteresis
Oscillator
Frequency
V
CC
_UVLO(R)
V
CC
_UVLO(F)
DR
cc
_UVLO(R)
DRV
cc
_UVLO(F)
V
b
_UVLO(R)
V
b
_UVLO(F)
Supply ramping up
Supply ramping down
Supply ramping up and down
Supply ramping up
Supply ramping down
Supply ramping up and down
Supply ramping up
Supply ramping down
Supply ramping up and down
4.0
3.75
0.15
8.3
7.5
0.6
8.3
7.5
0.6
4.17
0.25
9
8.2
9
8.2
4.35
4.1
0.3
9.7
8.9
0.9
9.7
8.9
0.9
V
V
V
V
V
V
V
V
V
F
S
Rt=120K
Rt=51K
Note2
170
340
200
400
1.25
230
460
kHz
Ramp Amplitude
V
ramp
V
Min Duty Cycle
D
min
D
min(ctrl)
D
max
Fb=2V
0
%
Min Pulse Width
F
s
=200kHz,
Note2
F
s
=200kHz, Fb=1.2V
F
s
=400kHz, Fb=1.2V
20% above free running freq
200
ns
Max Duty Cycle
80
70
%
Sync Frequency Range
Sync(Fs)
480
kHz
Sync Pulse Duratin
Sync(puls)
200
ns
Sync high Level Threshold
Sync(H)
2
V
Sync Low Level Threshold
Sync(L)
0.8
V
Electrical Specifications
Unless otherwise specified, these specifications apply over V
cc
=5V; DRV
cc
=Vb=12V, 0
o
C<T
j
< 125
o
C
5
Symbol
Definition
Min
Max
Units
V
bus
V
cc
DRV
cc
V
b
to V
s
F
s
T
j
Converting Voltage
Supply Voltage
Supply Voltage
Supply Voltage
Operating Frequency
Junction Temperature
12
4.5
10
10
100
-40
75
13.2
16
16
400
125
V
V
V
V
kHz
o
C
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