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| 型号： | MAX6884ETP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/34页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR PWR SPL 20-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 类型： | 多压监控器 |
| 监视电压数目： | 6 |
| 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： | 6 种可选阀值组合 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WQFN 裸露焊盘 |
| 供应商设备封装： | 20-TQFN-EP（5x5） |
| 包装： | 管件 |
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EEPROM-Programmable, Hex
Power-Supply Supervisory Circuits
Pin Description (continued)
MAX6884
PIN
MAX6885
NAME
FUNCTION
Voltage-Detector Input 3. Program two thresholds per voltage-detector input
(undervoltage UV and undervoltage/overvoltage UV/OV). Program IN3 detector
18
18
IN3
thresholds from 1V to 5.8V in 20mV increments, or 0.5V to 3.05V in 10mV increments.
For improved noise immunity, bypass IN3 to GND with a 0.1μF capacitor installed as
close to the device as possible. Program the device to receive power through IN1–IN4
inputs or V CC (see the Powering the MAX6884/MAX6885 section).
Voltage-Detector Input 2. Program two thresholds per voltage-detector input
(undervoltage UV and undervoltage/overvoltage UV/OV). Program IN2 detector
19
19
IN2
thresholds from 1V to 5.8V in 20mV increments, or 0.5V to 3.05V in 10mV increments.
For improved noise immunity, bypass IN2 to GND with a 0.1μF capacitor installed as
close to the device as possible. Program the device to receive power through IN1–IN4
inputs or V CC (see the Powering the MAX6884/MAX6885 section).
Voltage-Detector Input 1. Program two thresholds per voltage-detector input
(undervoltage UV and undervoltage/overvoltage UV/OV). Program IN1 detector
20
20
IN1
thresholds from 1V to 5.8V in 20mV increments, or 0.5V to 3.05V in 10mV increments.
For improved noise immunity, bypass IN1 to GND with a 0.1μF capacitor installed as
close to the device as possible. Program the device to receive power through IN1–IN4
inputs or V CC (see the Powering the MAX6884/MAX6885 section).
—
—
EP
Exposed Paddle. Internally connected to GND. Connect EP to GND or leave floating.
Detailed Description
The MAX6884/MAX6885 EEPROM-configurable, multi-
voltage supply supervisors monitor six voltage-detector
inputs, one auxiliary input, and one watchdog input,
and feature three programmable outputs for highly con-
figurable, power-supply monitoring applications (see
Table 1 for programmable features). Manual reset and
margin disable inputs offer additional flexibility.
Each voltage detector provides a programmable pri-
mary undervoltage and secondary undervoltage/over-
voltage threshold. Program thresholds from 0.5V to
3.05V in 10mV increments, 1.0V to 5.8V in 20mV incre-
ments, or from 0.1667V to 1.0167V in 3.3mV incre-
ments. To achieve thresholds from 0.1667V to 1.0167V
in 3.3mV increments, the respective input voltage
detector must be programmed for high impedance
and an external voltage-divider must be connected. A
fault register logs undervoltage and overvoltage condi-
tions for each voltage-detector input.
An internal 10-bit ADC (MAX6884 only) converts volt-
ages at IN1–IN6, AUXIN, and V CC through a multiplex-
er that automatically sequences through all inputs
every 200ms. Access the device’s internal 512-bit user
EEPROM, configuration EEPROM, configuration regis-
ters, ADC registers, and fault registers through an
SMBus/I 2 C-compatible serial interface (see the
SMBus/I 2 C-Compatible Serial Interface section). The
MAX6884/MAX6885 also feature an accurate internal
1.25V reference. For greater accuracy, connect an
external 1.25V reference to REFIN (MAX6884 only).
Program outputs RESET , UV / OV , and WDO for open-
drain or weak pullup. Program RESET and UV / OV to
assert on any voltage-detector input, MR , or each other.
RESET can also depend on WDO . Programmable timing
delay blocks configure each output to wait between
25μs and 1600ms before deasserting. Fault registers log
the assertion of RESET , UV / OV , and WDO .
_______________________________________________________________________________________
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6884ETP+ | 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 |
| MAX6884ETP+T | 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 |
| MAX6884ETP-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 |
| MAX6884EVCMOD2 | 功能描述:监控电路 Programmers, Development Systems 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 |
| MAX6884EVKIT | 功能描述:监控电路 Programmers, Development Systems 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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