参数资料
| 型号： | ISL6131IR |
| 厂商： | Intersil |
| 文件页数： | 7/15页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR VOLT 4-LINE 24-QFN |
| 标准包装： | 75 |
| 类型： | 多压监控器 |
| 监视电压数目： | 4 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘 |
| 供应商设备封装： | 24-VQFN |
| 包装： | 管件 |
ISL6131, ISL6132
Applications Usage
Using the ISL6131EVAL1Z and
ISL6132EVAL1Z Platforms
The ISL6131EVAL1Z platform is set up to monitor and report an
undervoltage condition on each of 12V, 5V, 3.3V and 1.2V
supplies to a -20% tolerance.
Each monitored supply has an individual STATUS output and an
AND’ed PGOOD output signal for all four supplies. An OFF LED is
the PGOOD indicator for all four supplies. The ENABLE input
enables or disables the voltage monitoring function. See Figures
10 to 17 for performance and function examples.
The ISL6132EVAL1Z platform is set up to monitor and report
either an undervoltage or an overvoltage condition on 5V and
12V supplies to a ±10% tolerance. There is an OV and a UV
STATUS output for each of the two supplies and individual
AND’ed PGOOD outputs when each voltage is within the
VIN
EN
VIN
EN
VIN
EN
ABC
STATUS
PGOOD
VOUT
DC-DC_A
VOUT
DC-DC_B
VOUT
DC-DC_C
VMON_A
VMON_D
programmed voltage range. An OFF LED indicates compliance to
the voltage range upper and lower limits.
The ENABLE inputs enable or disable the voltage monitoring
functions for each monitor supply.
See Figures 18 to 24 for performance and function examples.
VDD
ENABLE
ISL6131 VMON_C
VMON_B
GND
Figures 25 and 26 illustrate the ISL6131EVAL1Z and
ISL6132EVAL1Z platforms respectively in image and schematic.
Using the ISL6131, ISL6132 for Negative
Voltage Monitoring Applications
The ISL6131, ISL6132 can be used for -V monitoring because it
monitors any voltage that is more positive relative to its GND pin.
With correct bias differential, these parts can monitor any
voltage, regardless of polarity or amplitude.
Using the ISL6131 for “Lossless” Sequencing
Applications
The ISL6131 can be used in a “lossless” sequencing application
in which a monitored output voltage determines the start of the
next sequenced turn-on. As shown in Figure 7, VMON_A input
looks at the common V IN of several DC-DC converters and
enables DC-DC_A with STATUS _A, once both V IN and ENABLE are
satisfied. VMON_B monitors the output of DC-DC_A, and when
the acceptable output voltage is reached, DC-DC_B is enabled
with STATUS_B output. This sequencing pattern continues until
all DC-DC outputs are on, at which time PGOOD signal is
released. A delay of 160ms from VMON > V VMONVth to STATUS
high ensures stability at each step prior to subsequent turn-on.
Additional ISL6131s can be employed in parallel to sequence any
number of DC-DC convertors in this fashion.
7
FIGURE 7. ISL6131 “LOSSLESS” SEQUENCING CONFIGURATION
Using the ISL6131 for System Voltage and
Over-Temperature Monitoring
As a multi-voltage monitoring IC, the ISL6131 can monitor
over-temperature as well as voltage for more complete coverage
of system stability. Using a Negative Temperature Coefficient
(NTC) passive device in place of one of the resistors in a VMON
divider provides over-temperature monitoring either locally or
remotely.
Evaluations of this application configuration have involved the
QT0805T-202J, QT0805Y-502J and QT0805Y-103J NTCs from
Quality Thermistor.
ISL6131 over-temperature monitoring is not as accurate as
specific temperature monitor ICs, but this implementation
provides a cost-efficient solution with 5% tolerances achievable.
See Figures 8 and 9 for over-temperature sensing configuration
and operation results. In this example, the desired maximum
temperature is 100°C. The QT0805Y-103J NTC was placed at the
end of 3 feet of twisted pair wire to emulate a remote sensing
application. According to the Quality Thermistor data sheet, this
NTC device has a +25°C value of 10K and a +100°C value of
0.923K. An accompanying standard value resistor of 3.83K was
chosen for the divider so that at 100°C, VMON ~0.633V with the
bias voltage at 3.3V.
The resulting falling VMON trip point with the configuration
shown is ~0.634V, with ~0.642V for rising, which equates to
~95°C for under-temperature and ~97°C for over-temperature,
respectively. Choosing the standard resistor value above and
below R1 allows for small adjustments in the temperature trip
point.
FN9119.6
February 11, 2014
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6131IR-T | 功能描述:IC SUPERVISOR 4-CHAN 24-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:100 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:- 复位:低有效 复位超时:最小为 100 ms 电压 - 阀值:4.38V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:8-TSSOP 包装:管件 |
| ISL6131IRZA | 功能描述:监控电路 W/ANNEAL 4-CH UV SUPERVISOR Y IC RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| ISL6131IRZA-T | 功能描述:IC SUPERVISOR 4-CHAN 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 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 600 ms 电压 - 阀值:3.8V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) |
| ISL6132 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Multiple Voltage Supervisory ICs |
| ISL6132EVAL1Z | 制造商:Intersil Corporation 功能描述:ISL6132 EVAL BOARD - 24 LEAD - MLFP - ROHS - Bulk 制造商:Intersil Corporation 功能描述:BOARD EVAL FOR ISL6132 |
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