参数资料
型号: ISL8843AMBZ
厂商: Intersil
文件页数: 7/15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
ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A
Electrical Specifications
ISL884xAA - Recommended operating conditions unless otherwise noted. Refer to Block Diagram and
Typical Application schematic onpage 3 and page 4. V DD = 15V, R T = 10k Ω , C T = 3.3nF, T A = -40 to +105°C
(Note 3). Typical values are at T A = +25°C (Continued)
PARAMETER
Input Signal, Maximum
Gain, A CS = Δ V COMP / Δ V CS
CS to OUT Delay
TEST CONDITIONS
0 < V CS < 910mV, V FB = 0V
MIN
0.97
2.5
-
TYP
1.00
3.0
35
MAX
1.03
3.5
55
UNITS
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 5)
(Note 5)
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
60
1.0
2.475
-1.0
1.0
-0.4
4.80
0.4
60
90
1.5
2.500
-0.2
-
-
-
-
80
-
-
2.530
1.0
-
-
VREF
1.0
-
dB
MHz
V
μ A
mA
mA
V
V
dB
30V (Note 5)
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 10V )/f 30V
(Note 5)
Static Test
Static Test
RTCT = 2.0V
48
-
-
-
-
6.5
51
0.2
-
1.75
1.0
7.8
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 to OUT, I OUT = -200mA
OUT to GND, I OUT = 200mA
C OUT = 1nF (Note 5)
C OUT = 1nF (Note 5)
C OUT = 1nF (Note 5)
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
COMP = VREF
94.0
96.0
-
%
(ISL8840A, ISL8842A, ISL8843A)
Maximum Duty Cycle
COMP = VREF
47.0
48.0
-
%
(ISL8841A, ISL8844A, ISL8845A)
Minimum Duty Cycle
COMP = GND
-
-
0
%
NOTES:
3. Specifications at -40°C and +105°C are guaranteed by +25°C test with margin limits.
4. This is the V DD current consumed when the device is active but not switching. Does not include gate drive current.
5. These parameters, although guaranteed, are not 100% tested in production.
6. Adjust V DD above the start threshold and then lower to 15V.
7
FN6320.3
April 18, 2007
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ISL8843AMBZ-T 功能描述:IC REG CTRLR BST FLYBK ISO 8SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC(0.154",3.90mm 宽) 包装:带卷 (TR)
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