參數(shù)資料
型號(hào): ISL6722A
廠商: Intersil Corporation
元件分類: DRAM
英文描述: 1024 x 9 x 2 Asynchronous Bidirectional FIFO Memory 44-PLCC 0 to 70
中文描述: 靈活的單端電流模式PWM控制器
文件頁(yè)數(shù): 6/23頁(yè)
文件大?。?/td> 428K
代理商: ISL6722A
6
FN9237.0
October 19, 2005
Blanking Time
(Note 5)
30
60
100
ns
Gain, A
CS
V
SLOPE
= 0V, V
FB
= 2.3V,
V
ISET
= 0.35V, 1.5V
A
CS
=
ISET/
ISENSE
0.77
0.79
0.81
V/V
ERROR AMPLIFIER
Open Loop Voltage Gain
(Note 5)
60
90
-
dB
Gain-Bandwidth Product
(Note 5)
-
15
-
MHz
Reference Voltage Initial Accuracy
V
FB
= COMP, T
A
= 25°C (Note 5)
2.465
2.515
2.565
V
Reference Voltage
V
FB
= COMP
2.44
2.515
2.590
V
COMP to PWM Gain, A
COMP
COMP = 4V, T
A
= 25°C
0.31
0.33
0.35
V/V
COMP to PWM Offset
COMP = 4V
0.51
0.75
0.88
V
FB Input Bias Current
V
FB
= 0V
-2
0.1
2
μ
A
COMP Sink Current
COMP = 1.5V, V
FB
= 2.7V
2
6
-
mA
COMP Source Current
COMP = 1.5V, V
FB
= 2.3V
-0.25
-0.5
-
mA
COMP VOH
V
FB
= 2.3V
4.25
4.4
5.0
V
COMP VOL
V
FB
= 2.7V
0.4
0.8
1.2
V
PSRR
Frequency = 120Hz (Note 5)
60
80
-
dB
SS Clamp, V
COMP
SS = 2.5V, V
FB
= 0V, ISET = 2V
2.4
2.5
2.6
V
OSCILLATOR
Frequency Accuracy
289
318
347
kHz
Frequency Variation with VCC
T
A
= 105°C (F
20V
- F
9V
)/F
9V
T
A
= -40°C (F
20V
- F
9V
)/F
9V
-
2
2
3
3
%
Temperature Stability
(Note 5)
-
8
-
%
Maximum Duty Cycle
(Note 6)
68
75
81
%
Comparator High Threshold
-
3.00
-
V
Comparator High Threshold w/Ext. SYNC (ISL6723A) (Note 5)
-
4.00
-
V
Comparator Low Threshold
-
1.50
-
V
Discharge Current
T
A
= 0 - 105°C
T
A
= -40 - 105°C
0.75
0.70
1.0
1.0
1.2
1.2
mA
SOFT-START
Charging Current
SS = 2V
-40
-55
-70
μ
A
Charged Threshold Voltage
4.26
4.50
4.74
V
Initial Overcurrent Discharge Current
Sustained OC Threshold
< SS < Charged Threshold
30
40
55
μ
A
Overcurrent Shutdown Threshold Voltage
Charged Threshold minus,
T
A
= 25°C
0.110
0.125
0.140
V
Fault Discharge Current
SS = 2V
0.25
1.0
-
mA
Reset Threshold Voltage
T
A
= 25°C
0.22
0.27
0.31
V
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
schematic. 9V < V
CC
= V
C
< 20V, Rt = 11k
, Ct = 330pF, T
A
= -40 to 105°C (Note 3),
Typical values are at T
A
= 25°C
(Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
ISL6722A, ISL6723A
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