參數(shù)資料
型號(hào): IR3629
廠商: International Rectifier
英文描述: HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER WITH POWER GOOD OUTPUT
中文描述: 高頻同步PWM降壓控制器與電源良好輸出
文件頁(yè)數(shù): 20/23頁(yè)
文件大小: 598K
代理商: IR3629
IR3629/IR3629A MPbF
11/26/2007
Parameter
SYM
Test Condition
Min
TYP
MAX
Units
Error Amplifier
Input Bias Current
IFB1
SS=3V
-0.1
-0.5
Input Bias Current
IFB2
SS=0V
20
35
50
Source/Sink Current
I(source/Sink)
50
70
90
μA
Transconductance
gm
1000
1300
1600
μmho
Soft Start/SD
Soft Start Current
ISS
SS=0V
15
20
28
μA
Shutdown
Output
Threshold
SD
0.25
V
Over Current Protection
OCSET Current
IOCSET
15
20
26
Hiccup Current
IHiccup
Note3
3
μA
Hiccup Duty Cycle
Hiccup(duty)
IHiccup / ISS , Note3
15
%
Power Good
Vsns Lower Trip Point
Vsns(trip)
Vsns ramping Down
0.35
0.38
0.41
V
Hysteresis
PGood(Hys)
15
27.5
40
mV
Pgood
Output
Low
Voltage
PG(voltage)
IPgood =4mA
0.25
0.5
V
Input Bias Curent
ISns
0
0.3
1
μA
Thermal Shutdown
Thermal
Shutdown
Threshold
TD
Note3
140
Thermal
Shutdown
Hysteresis
TD(Hys)
Note3
20
oC
Output Drivers
LO, Drive Rise Time
Tr(Lo)
CL=1.5nF, See Fig 3
30
60
HI Drive Rise Time
Tr(Hi)
CL=1.5nF, See Fig 3
30
60
LO Drive Fall Time
Tf(Lo)
CL=1.5nF, See Fig 3
30
60
HI Drive Fall Time
Tf(Hi)
CL=1.5nF, See Fig 3
30
60
Dead Band Time
Tdead
See Fig 3
10
50
100
ns
Note2: Cold temperature performance is guaranteed via correlation using statistical quality control.
Not tested in production.
Note3: Guaranteed by Design but not tested in production.
9V
2V
9V
2V
High Side Driver
(HDrv)
Low Side Driver
(LDrv)
Tr
Tf
Deadband
H_to_L
Deadband
L_to_H
Tr
Tf
Fig. 3: Definition of Rise/Fall time and Deadband Time
6
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