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| 型号： | ISL88002IH31Z-TK |
| 厂商： | Intersil |
| 文件页数： | 6/11页 |
| 文件大小： | 0K |
| 描述： | IC VOLT SUPERVISOR 3.09V SOT23-3 |
| 产品培训模块： | Solutions for Industrial Control Applications |
| 标准包装： | 1,000 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 3.075V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-236-3，SC-59，SOT-23-3 |
| 供应商设备封装： | SOT-23-3 |
| 包装： | 带卷 (TR) |
ISL88001, ISL88002, ISL88003
Electrical Specifications
Over the recommended operating conditions unless otherwise specified. (Continued)Boldface limits apply
over the operating temperature range, -40°C to +85°C.
MIN
MAX
SYMBOL
PARAMETER
TEST CONDITIONS
(Note 6)
TYP
(Note 6) UNITS
RESET / RESET
V OL
V OH
Reset Output Voltage Low
Reset Output Voltage High
V DD < V THVDD, for ISL88001
V DD < V THVDD, Sinking 0.5mA for ISL88002
V DD > V THVDD , for ISL88003
V DD > V THVDD , for ISL88001
0.2
0.2
0.2
V DD - 0.4 V DD - 0.2
0.40
0.40
0.40
V
V
V
V
V DD > V THVDD , Sourcing 0.5mA, ISL88002
V DD < V THVDD , for ISL88003
V DD - 0.2
V DD - 0.4 V DD - 0.2
V
V
t RPD
V TH to Reset Asserted Delay
15
μs
t POR
C LOAD
POR Timeout Delay
Load Capacitance on Reset Pin
140
200
5
260
ms
pF
NOTE:
6. 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.
Pin Descriptions
RST
The ISL88003 push-pull RST output is set to VDD (HIGH)
whenever the device is first powered up or VDD falls below
its respective minimum voltage sense level.
RST
The RST output functions identically to the complementary
device asserts a reset signal (RST = LOW or RST = HIGH)
to a μP/μC if this voltage is less than the preset voltage trip
point. The reset signal prevents system operation during a
power failure or brownout condition. This reset signal
remains asserted until V DD exceeds the voltage threshold
setting for the reset time delay period t POR . See Figure 2.
V DD
RST output. On the ISL88001, this is a push-pull output. On
the ISL88002, it is an open drain output that is pulled to GND
V DD
R PU *
V DD
(LOW) when reset is asserted. Suggested pull-up RST
resistor values are in the range of 5k ? to 100k ? .
V DD
ISL88001
ISL88002*
ISL88003
RESET
OUTPUT
RESET
INPUT
μP/μC
The V DD pin is the power supply terminal. The voltage at this
pin is compared against an internal factory-programmed
voltage trip point, V THVDD . A reset is first asserted when the
device is initially powered up to ensure that the power supply
has stabilized. Thereafter, reset is again asserted whenever
GND
*Necessary for ISL88002
GND
V DD falls below V THVDD . The device is designed with
hysteresis to help prevent chattering due to noise.
Principles of Operation
The ISL88001, ISL88002, ISL88003 devices provide a low
power, high accuracy solution for those voltage monitoring
applications needing supply voltage supervision with power
reset control. By integrating these features into small 3 Ld
SC-70 and 3 Ld SOT-23 packages and consuming as little
as 160nA of supply current, these devices can lower system
cost and reduce board space requirements.
Low Voltage Monitoring
During normal operation, the ISL88001, ISL88002,
ISL88003 devices monitor the voltage level of V DD . The
6
FIGURE 1. TYPICAL APPLICATION DIAGRAM
FN6174.2
May 29, 2012
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