参数资料
型号: ISL8843MBZ
厂商: Intersil
文件页数: 6/12页
文件大小: 0K
描述: IC REG CTRLR BST FLYBK ISO 8SOIC
标准包装: 980
PWM 型: 电流模式
输出数: 1
频率 - 最大: 2MHz
占空比: 100%
电源电压: 9 V ~ 30 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -55°C ~ 125°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 管件
ISL8843
Electrical Specifications
ISL8843M - Recommended operating conditions unless otherwise noted. Refer to Block Diagram and
Typical Application schematic. V DD = 15V, RT = 10k ? , CT = 3.3nF, T A = -55 to 125°C (Note 6), Typical values
are at T A = 25°C (Continued)
PARAMETER
Long Term Stability
Current Limit, Sourcing
Current Limit, Sinking
TEST CONDITIONS
T A = 125°C, 1000 hours (Note 8)
MIN
-
-20
5
TYP
5
-
-
MAX
-
-
-
UNITS
mV
mA
mA
CURRENT SENSE
Input Bias Current
CS Offset Voltage
COMP to PWM Comparator Offset Voltage
Input Signal, Maximum
Gain, A CS = ? V COMP / ? V CS
CS to OUT Delay
V CS = 1V
V CS = 0V (Note 8)
V CS = 0V (Note 8)
0 < V CS < 910mV, V FB = 0V
-1.0
95
0.80
0.97
2.5
-
-
100
1.15
1.00
3.0
35
1.0
105
1.30
1.03
3.5
60
μ A
mV
V
V
V/V
ns
ERROR AMPLIFIER
Open Loop Voltage Gain
Unity Gain Bandwidth
Reference Voltage
FB Input Bias Current
COMP Sink Current
COMP Source Current
COMP VOH
COMP VOL
PSRR
(Note 8)
(Note 8)
V FB = V COMP
V FB = 0V
V COMP = 1.5V, V FB = 2.7V
V COMP = 1.5V, V FB = 2.3V
V FB = 2.3V
V FB = 2.7V
Frequency = 120Hz, V DD = 12V to
18V (Note 8)
60
1.0
2.460
-1.0
1.0
-0.4
4.80
0.4
60
90
1.5
2.500
-0.2
-
-
-
-
80
-
-
2.535
1.0
-
-
VREF
1.0
-
dB
MHz
V
μ A
mA
mA
V
V
dB
OSCILLATOR
Frequency Accuracy
Frequency Variation with V DD
Temperature Stability
Amplitude, Peak to Peak
RTCT Discharge Voltage (Valley Voltage)
Discharge Current
Initial, T A = 25°C
T A = 25°C, (F 30V - F 9V )/F 30V
(Note 8)
Static Test
Static Test
RTCT = 2.0V
48
-
-
-
-
6.2
51
0.2
-
1.75
1.0
8.0
53
1.0
5
-
-
8.5
kHz
%
%
V
V
mA
OUTPUT
Gate VOH
Gate VOL
Peak Output Current
Rise Time
Fall Time
GATE VOL UVLO Clamp Voltage
V DD - OUT, I OUT = -200mA
OUT - GND, I OUT = 200mA
C OUT = 1nF (Note 8)
C OUT = 1nF (Note 8)
C OUT = 1nF (Note 8)
VDD = 5V, I LOAD = 1mA
-
-
-
-
-
-
1.0
1.0
1.0
20
20
-
2.0
2.0
-
40
40
1.2
V
V
A
ns
ns
V
PWM
Maximum Duty Cycle
Minimum Duty Cycle
COMP = VREF
COMP = GND
93.5
-
95
-
-
0
%
%
NOTES:
6. Specifications at -55°C and 125 °C are guaranteed by 25 °C test with margin limits .
7. This is the V DD current consumed when the device is active but not switching. Does not include gate drive current.
8. Guaranteed by design, not 100% tested in production.
6
FN9238.1
January 3, 2006
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