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| 型号： | MAX6871ETJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 47/51页 |
| 文件大小： | 0K |
| 描述： | IC SEQUENCE/SUPERVISOR 32TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 43 |
| 类型： | 序列发生器 |
| 监视电压数目： | 4 |
| 输出： | 开路漏极，推挽式 |
| 复位： | 高有效/低有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 5 种可调阀值电压 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 管件 |
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EEPROM-Programmable Hex/Quad
Power-Supply Sequencers/Supervisors with ADC
Temperature Sensor Outputs
Figure 11 shows the MAX6870/MAX6871 in a tempera-
ture-sensing application with the DS600. The DS600
generates an analog output voltage proportional to the
sensed temperature through V OUT and logic outputs on
TO and TO (only TO is shown). The internal ADC of the
MAX6870/MAX6871 digitizes the analog output voltage
of the DS600 and stores the results in read-only regis-
ters 5Ch through 5Fh. V TH sets the threshold voltage
that V OUT must exceed for TO to generate a logic-high
signal. V TH must be less than 1.25V, otherwise the
overcurrent condition will occur after the internal ADC
attains its full-scale input voltage. Configure GPI1 as an
active-high input and configure PO7 (MAX6870)/PO5
(MAX6871) to depend on GPI1. When V OUT increases
above V TH , TO asserts high, causing PO7/PO5 to
assert to its active state.
+5V
Monitoring Other Voltages
Use AUXIN_ to monitor any voltage up to 1.25V. The
internal ADC of the MAX6870/MAX6871 digitizes the volt-
age and stores the results in read-only registers 5Ch
through 5Fh. The internal ADC cycles through the volt-
age monitor inputs and the auxiliary inputs every 200ms.
Layout and Bypassing
For better noise immunity, bypass each of the voltage
detector inputs to GND with 0.1μF capacitors installed
as close to the device as possible. Bypass ABP and
DBP to GND with 1μF capacitors installed as close to
the device as possible. ABP and DBP are internally
generated voltages and should not be used to supply
power to external circuitry.
Configuration Latency Period
A delay of less than 5μs occurs between writing to the
configuration registers and the time when these
changes actually take place, except when changing
one of the voltage-detector thresholds. Changing a
voltage-detector threshold typically takes 150μs. When
changing EEPROM contents, a software reboot or
V DD
V OUT
R PU
AUXIN1
IN3
cycling of power is required for these changes to trans-
fer to volatile memory.
Chip Information
V TH
(<1.25V)
V TH
DS600
TO
GPI1
MAX6870
MAX6871
PROCESS: BiCMOS
CTG
GND
Figure 11. Temperature Sensor Outputs
GND
PO5/
PO3
______________________________________________________________________________________
47
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6871ETJ+ | 功能描述:监控电路 EEPROM-Prog Quad Power-Sup Sequencer 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 |
| MAX6871ETJ+T | 功能描述:监控电路 EEPROM-Prog Quad Power-Sup Sequencer 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 |
| MAX6871ETJ-T | 功能描述:监控电路 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 |
| MAX6872ETJ | 功能描述:监控电路 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 |
| MAX6872ETJ+ | 功能描述:监控电路 EEPROM-Prog Hex Power-Sup Sequencer 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 |
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