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参数资料
| 型号： | ISL88031IU8HFZ |
| 厂商： | Intersil |
| 文件页数： | 4/8页 |
| 文件大小： | 0K |
| 描述： | IC VOLT MONITOR QUINT 8-MSOP |
| 标准包装： | 80 |
| 类型： | 多压监控器 |
| 监视电压数目： | 5 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最小为 80 ms |
| 电压 - 阀值： | 3.078V，4.634V，可调，可调，可调 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
ISL88031
Electrical Specifications
Over the recommended operating conditions, unless otherwise specified. Parameters with MIN and/or MAX
limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested. (Continued)
SYMBOL
V TH2HYST
Hysteresis of V TH2
PARAMETER
TEST CONDITIONS
V TH2 = 3.09V
MIN
TYP
37
MAX UNITS
mV
V TH2 = 2.92V
V TH2 = 2.32V
V TH2 = 1.69V
29
23
17
mV
mV
mV
V REF
V REFHYST
V TH for V3MON, V4MON, V5MON Adj. Reset Threshold
Voltage
Hysteresis Voltage
+25°C
0°C to +70°C
-40°C to +85°C
0.589
0.578
0.577
0.600 0.611
0.600 0.622
0.600 0.623
3
V
V
V
mV
RESET
V OL
t RPD
t POR
C LOAD
Reset Output Voltage Low
V TH to Reset Asserted Delay
POR Timeout Delay
Load Capacitance on Reset Pins
V DD ≥ 3.3V, Sinking 2.5mA
V DD < 3.3V, Sinking 1.5mA
80
0.05
0.05
6
120
5
0.40
0.40
180
V
V
μs
ms
pF
MANUAL RESET
V MRL
V MRH
t MR
R PU
MR Input Voltage Low
MR Input Voltage High
MR Minimum Pulse Width
Internal Pull-Up Resistor
V DD - 0.6
550
10
0.8
V
V
ns
k Ω
Pin Descriptions
RST
The RST output is an open drain output, which is asserted
low whenever:
1. the device is initially powered up to 1V or,
2. V DD , V2MON, V3MON, V4MON, or V5MON fall below
their minimum voltage sense level.
MR
The MR input is an active low debounced input to which a
user can connect a push-button to add manual reset
capability or use a signal to pull low. MR has an internal
pull-up resistor.
V DD
The V DD pin is the IC power supply terminal. The voltage at
this pin is compared against an internal factory-programmed
voltage trip point, V TH1 . RST is first asserted low when the
device is initially powered and V DD < 1V and then at any
time thereafter when V DD falls below V TH1 . The device is
designed with hysteresis to help prevent chattering due to
noise and is immune to brief power-supply transients.
4
V2MON
The V2MON input is the second preset monitored voltage
that causes the RST output to go low when the voltage on
V2MON falls below V TH2 .
V3MON, V4MON, and V5MON
The VxMON inputs provide monitoring and UV compliance
of three additional voltages through resistor dividers. A reset
is issued on the ISL88031 if the voltage on any VxMON falls
below the internal V REF of 0.6V.
Principles of Operation
The ISL88031 device provides those functions needed for
monitoring critical voltages, such as power-supply and battery
functions in microprocessor systems. It provides such features
as Power-On Reset control, Supply Voltage Supervision, and
Manual Reset Assertion. The integration of all these features
along with competitive reset threshold accuracy and low power
consumption, makes the ISL88031 device suitable for a wide
FN8227.2
June 9, 2009
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