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參數(shù)資料
| 型號(hào)： | IR21571S |
| 廠商： | International Rectifier |
| 英文描述： | FULLY INTEGRATED BALLAST CONTROL IC |
| 中文描述： | 完全集成的鎮(zhèn)流器控制IC |
| 文件頁(yè)數(shù)： | 3/17頁(yè) |
| 文件大小： | 234K |
| 代理商： | IR21571S |
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IR21571
(S)
www.irf.com
3
Note 2:
Enough current should be supplied into the VCC lead to keep the internal 15.6V zener clamp diode on this lead
regulating its voltage.
Due to the fact that the RT input is a voltage-controlled current source, the total RT lead current is the sum of all
the parallel current sources connected to that lead. For optimum oscillator current mirror performance, this total
current should be kept between 50
μ
A and 500
μ
A. During the preheat mode, the total current flowing out of the RT
lead consists of the RPH lead current plus the current due to the RT resistor. During the run mode, the total RT lead
current consists of the RUN lead current plus the current due to the RT resistor.
Note 3:
Electrical Characteristics
V
CC
= V
BS
= V
BIAS
= 14V +/- 0.25V, R
T
= 40.0k
, C
T
= 470 pF, RPH and RUN leads no connection, V
CPH
= 0.0V,
R
DT
= 6.1k
, R
OC
= 20.0k
,
V
CS
= 0.5V, V
SD
= 0.0V, C
L
= 1000pF, T
A
= 25
C unless otherwise specified.
Supply Characteristics
Symbol Definition
V
CCUV+
V
CC
supply undervoltage positive going
threshold
V
UVHYS
V
CC
supply undervoltage lockout hysteresis
I
QCCUV
UVLO mode quiescent current
I
QCCFLT
Fault-mode quiescent current
Min.
10.5
Typ.
11.4
Max. Units Test Conditions
12.4
V
CC
rising from 0V
V
1.5
50
75
1.8
150
200
2.2
300
300
V
CC
< V
CCUV-
SD=5V, CS = 2V or
Tj > T
SD
I
QCC
Quiescent V
CC
supply current
2.9
3.8
4.3
R
T
no connection, C
T
connected to COM
mA
T
=36k
, R
DT
=
5.6k
, C
T
=220pF
V I
CC
= 10mA
I
CC50K
V
CC
supply current, f= 50kHz
4.0
5.5
7.0
μ
A
V
CLAMP
V
CC
zener clamp voltage
14.5
15.6
16.5
Recommended Operating Conditions
For proper operation the device should be used within the recommended conditions.
Symbol Definition
V
BS
V
S
V
CC
I
CC
V
DC
C
T
R
DT
R
OC
I
RT
I
RPH
I
RUN
I
SD
I
CS
T
J
VBSMIN
Min.
V
CC
- 0.7
-3.0
Max.
V
CLAMP
600
Units
High side floating supply voltage
Steady state high side floating supply offset voltage
Supply voltage
V
CCUV+
Note 2
V
CLAMP
10
Supply current
mA
V
DC
lead voltage
C
T
lead capacitance
Deadtime resistance
Over-current (CS+) threshold programming resistance
R
T
lead current (Note 3)
RPH lead current (Note 3)
0
VCC
V
220
1.0
—
-500
—
—
50
-50
pF
0
450
RUN lead current (Note 3)
0
450
Shutdown lead current
-1
1
Current sense lead current
-1
1
Junction temperature
Minimum required VBS voltage for proper HO functionality
-40
—
125
5
o
C
V
V
k
uA
mA
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