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參數(shù)資料
| 型號： | ISL6845IUZ |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Improved Industry Standard Single-Ended Current Mode PWM Controller |
| 中文描述： | 1 A SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MO-187AA, MSOP-8 |
| 文件頁數(shù)： | 5/9頁 |
| 文件大?。?/td> | 264K |
| 代理商： | ISL6845IUZ |
5
Gain, A
CS
=
V
COMP
/
V
CS
0 < V
CS
< 910mV, V
FB
= 0V
(Note 5)
2.5
3.0
3.5
V/V
CS to OUT Delay
(Note 5)
-
25
40
nS
ERROR AMPLIFIER
Open Loop Voltage Gain
(Note 5)
60
90
-
dB
Unity Gain Bandwidth
(Note 5)
3.5
5
-
MHz
Reference Voltage
V
FB
= V
COMP
2.475
2.500
2.525
V
FB Input Bias Current
V
FB
= 0V
-1.0
-0.2
1.0
μ
A
COMP Sink Current
V
COMP
= 1.5V, V
FB
= 2.7V
1.0
-
-
mA
COMP Source Current
V
COMP
= 1.5V, V
FB
= 2.3V
-0.4
-
-
mA
COMP VOH
V
FB
= 2.3V
4.80
-
VREF
V
COMP VOL
V
FB
= 2.7V
0.4
-
1.0
V
PSRR
Frequency = 120Hz, V
DD
= 12V to
18V (Note 5)
60
80
-
dB
OSCILLATOR
Frequency Accuracy
Initial, T
J
= 25
o
C
T = 25
o
C (F
18V
- F
12V
)/F
12V
49
52
55
kHz
Frequency Variation with V
DD
-
0.2
1.0
%
Temperature Stability
(Note 5)
-
-
5
%
Amplitude, Peak to Peak
-
1.9
-
V
RTCT Discharge Voltage
-
0.7
-
V
Discharge Current
RTCT = 2.0V
7.2
8.4
9.5
mA
OUTPUT
Gate VOH
V
DD
- OUT, I
OUT
= -200mA
-
1.0
2.0
V
Gate VOL
OUT - GND, I
OUT
= 200mA
-
1.0
2.0
V
Peak Output Current
C
OUT
= 1nF (Note 5)
-
1.0
-
A
Rise Time
C
OUT
= 1nF (Note 5)
-
20
40
nS
Fall Time
C
OUT
= 1nF (Note 5)
-
20
40
nS
PWM
Maximum Duty Cycle
ISL6842, ISL6843
94
96
-
%
ISL6844, ISL6845
47
48
-
%
Minimum Duty Cycle
ISL6842, ISL6843
-
-
0
%
ISL6844, ISL6845
-
-
0
%
NOTES:
3. Specifications at -40
o
C are guaranteed by design, not production tested.
4. This is the V
DD
current consumed when the device is active but not switching. Does not include gate drive current.
5. Guaranteed by design, not 100% tested in production.
6. Adjust V
DD
above the start threshold and then lower to 15V.
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
schematic. V
DD
= 15V (Note 6), Rt = 10k
, Ct = 3.3nF, T
A
= -40 to 105
o
C (Note 3), Typical values are at
T
A
= 25
o
C
(Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
ISL6842, ISL6843, ISL6844, ISL6845
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