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参数资料
| 型号： | MAX6889ETJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/40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： | 60 |
| 类型： | 序列发生器 |
| 监视电压数目： | 8 |
| 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： | 8 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： | 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, Octal/Hex/Quad,
Power-Supply Sequencers/Supervisors
IN _
COMPARATORS
LOGIC NETWORK
FOR PO_
OUTPUT
STAGES
PO_
MR, GPI_,
MARGIN
WATCHDOG
TIMER
GPI_
SDA,
SCL
SERIAL
INTERFACE
REGISTER BANK
EEPROM
(USER AND CONFIG)
BOOT
CONTROLLER
ANALOG
BLOCK
DIGITAL
BLOCK
Figure 1. Top-Level Block Diagram
Detailed Description
The MAX6889/MAX6890/MAX6891 EEPROM-config-
urable, multivoltage supply sequencers/supervisors
monitor several voltage detector inputs and general-
purpose logic inputs, and feature programmable out-
puts for highly-configurable power-supply sequencing
applications. The MAX6889 features eight voltage
detector inputs and ten programmable outputs. The
MAX6890 features six voltage detector inputs and eight
programmable outputs, while the MAX6891 features
four voltage detector inputs and five programmable
outputs. Manual reset and margin disable inputs simpli-
fy board-level testing during the manufacturing
process.
All voltage detectors provide configurable thresholds
for undervoltage detection. The high-voltage input (IN1)
monitors voltages from 1.25V to 7.625V in 25mV incre-
ments, or 2.5V to 13.2V in 50mV increments. Inputs
(IN2–IN7) monitor voltages from 0.5V to 3.05V in 10mV
increments, or 1.0V to 5.5V in 20mV increments. An
additional high-voltage input (IN8, MAX6889 only) mon-
itors voltages from 1.25V to 7.625V in 25mV incre-
ments, or 2.5V to 15.25V in 50mV increments. To
monitor thresholds from 0.1667V to 1.0167V in 3.3mV
increments, the respective input voltage detector must
be programmed for high impedance (high-Z) and an
external voltage-divider must be connected.
The host controller communicates with the
MAX6889/MAX6890/MAX6891s’ internal 512-bit user
EEPROM, configuration EEPROM, and configuration
registers through an SMBus/I 2 C-compatible serial inter-
face (see Figure 1).
Programmable output options include active-high, active-
low, open drain, and weak pullup. Program each output
to assert on any voltage detector input, general-purpose
logic input, watchdog timer, or manual reset. Program-
mable timing delay blocks configure each output to wait
between 25μs and 1600ms before deasserting.
The MAX6889/MAX6890/MAX6891 feature a watchdog
timer for added flexibility. Program the watchdog timer to
assert one or more programmable outputs. Program the
watchdog timer to clear on a combination of one GPI_
input and one programmable output, one of the GPI_
inputs only, or one of the programmable outputs only.
The initial and normal watchdog timeout periods are
independently programmable from 6.25ms to 102.4s.
12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6889ETJ+ | 功能描述:监控电路 EEPROM-Prog Octal 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 |
| MAX6889ETJ+T | 功能描述:监控电路 EEPROM-Prog Octal 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 |
| MAX6889ETJ-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 |
| MAX6889EVCMAXQ | 功能描述:监控电路 EEPROM-Programmable Octal/Hex/Quad Power-Supply Sequencers/Supervisors 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 |
| MAX6889EVCMAXQU | 功能描述:监控电路 Evaluation Kit/Evaluation System for the MAX6889 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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