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参数资料
| 型号： | MAX6884ETP+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | EEPROM-Programmable, Hex, Power-Supply Supervisors with an ADC |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC20 |
| 封装： | 5 X 5 MM, 0.80 MM PITCH, MO-220WHHC, QFN-20 |
| 文件页数： | 34/34页 |
| 文件大小： | 310K |
| 代理商： | MAX6884ETP+ |
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MAX6884/MAX6885
EEPROM-Programmable, Hex
Power-Supply Supervisory Circuits
_______________________________________________________________________________________
9
PIN
MAX6884
MAX6885
NAME
FUNCTION
18
IN3
Voltage-Detector Input 3. Program two thresholds per voltage-detector input
(undervoltage UV and undervoltage/overvoltage UV/OV). Program IN3 detector
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 0.1F capacitor installed as
close to the device as possible. Program the device to receive power through IN1–IN4
inputs or VCC (see the Powering the MAX6884/MAX6885 section).
19
IN2
Voltage-Detector Input 2. Program two thresholds per voltage-detector input
(undervoltage UV and undervoltage/overvoltage UV/OV). Program IN2 detector
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 0.1F capacitor installed as
close to the device as possible. Program the device to receive power through IN1–IN4
inputs or VCC (see the Powering the MAX6884/MAX6885 section).
20
IN1
Voltage-Detector Input 1. Program two thresholds per voltage-detector input
(undervoltage UV and undervoltage/overvoltage UV/OV). Program IN1 detector
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 0.1F capacitor installed as
close to the device as possible. Program the device to receive power through IN1–IN4
inputs or VCC (see the Powering the MAX6884/MAX6885 section).
——
EP
Exposed Paddle. Internally connected to GND. Connect EP to GND or leave floating.
Pin Description (continued)
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 VCC 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/I2C-compatible serial interface (see the
SMBus/I2C-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
25s and 1600ms before deasserting. Fault registers log
the assertion of RESET, UV/OV, and WDO.
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6885ETP+ | EEPROM-Programmable, Hex, Power-Supply Supervisors with an ADC |
| MAX6886ETP+ | Pin-Selectable, Hex Power-Supply Supervisory Circuit |
| MAX6886ETP+T | Pin-Selectable, Hex Power-Supply Supervisory Circuit |
| MAX6887AETE+ | Hex/Quad, Power-Supply Supervisory Circuits |
| MAX6887AETE+T | Hex/Quad, Power-Supply Supervisory Circuits |
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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