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| 型号： | MAX16066ETL+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/62页 |
| 文件大小： | 0K |
| 描述： | IC SYSTEM MANAGER 8CH 40-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 应用： | 电源监控器，序列发生器 |
| 电源电压： | 2.8 V ~ 14 V |
| 电流 - 电源： | 4.5mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（6x6） |
| 包装： | 管件 |
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12-Channel/8-Channel, Flash-Configurable System
Managers with Nonvolatile Fault Registers
Detailed Description
The MAX16065 manages up to twelve system power
supplies and the MAX16066 can manage up to eight
system power supplies. After boot-up, if EN is high and
the software enable bit is set to ‘1,’ a power-up sequence
begins based on the configuration stored in flash and
the EN_OUT_s are controlled accordingly. When the
power-up sequence is successfully completed, the
monitoring phase begins. An internal multiplexer cycles
through each MON_ input. At each multiplexer stop, the
10-bit ADC converts the monitored analog voltage to a
digital result and stores the result in a register. Each time
a conversion cycle (50 F s, max) completes, internal logic
circuitry compares the conversion results to the over-
voltage and undervoltage thresholds stored in memory.
When a result violates a programmed threshold, the
conversion can be configured to generate a fault. GPIO_
can be programmed to assert on combinations of faults.
Additionally, faults can be configured to shut off the sys-
tem and trigger the nonvolatile fault logger, which writes
all fault information automatically to the flash and write-
protects the data to prevent accidental erasure.
The MAX16065/MAX16066 contain both SMBus and
JTAG serial interfaces for accessing registers and flash.
Use only one interface at any given time. For more infor-
mation on how to access the internal memory through
these interfaces, see the SMBus-Compatible Interface
and JTAG Serial Interface sections. The memory map
is divided into three pages with access controlled by
special SMBus and JTAG commands.
The factory-default values at POR (power-on reset) for all
RAM registers are ‘0’s. POR occurs when V CC reaches
the undervoltage-lockout threshold (UVLO) of 2.8V (max).
At POR, the device begins a boot-up sequence. During
the boot-up sequence, all monitored inputs are masked
from initiating faults and flash contents are copied to
the respective register locations. During boot-up, the
MAX16065/MAX16066 are not accessible through the
serial interface. The boot-up sequence takes up to
350 F s, after which the device is ready for normal opera-
tion. RESET is asserted low up to the boot-up phase and
remains asserted for its programmed timeout period once
sequencing is completed and all monitored channels
are within their respective thresholds. Up to the boot-up
phase, the GPIO_s and EN_OUT_s are high impedance.
Power
Apply 2.8V to 14V to V CC to power the MAX16065/
MAX16066. Bypass V CC to ground with a 10 F F capaci-
tor. Two internal voltage regulators, ABP and DBP,
supply power to the analog and digital circuitry within
the device. For operation at 3.6V or lower, disable the
regulators by connecting ABP and DBP to V CC .
ABP is a 3.0V (typ) voltage regulator that powers the inter-
nal analog circuitry. Bypass ABP to GND with a 1 F F ceram-
ic capacitor installed as close to the device as possible.
DBP is an internal 3.0V (typ) voltage regulator. DBP
powers flash and digital circuitry. All push-pull outputs
refer to DBP. DBP supplies the input voltage to the inter-
nal charge pump when the programmable outputs are
configured as charge-pump outputs. Bypass the DBP
output to GND with a 1 F F ceramic capacitor installed as
close as possible to the device.
Do not power external circuitry from ABP or DBP.
Sequencing
To sequence a system of power supplies safely, the
output voltage of a power supply must be good before
the next power supply may turn on. Connect EN_OUT_
outputs to the enable input of an external power supply
and connect MON_ inputs to the output of the power
supply for voltage monitoring. More than one MON_ can
be used if the power supply has multiple outputs.
Sequence Order
The MAX16065/MAX16066 provide a system of ordered
slots to sequence multiple power supplies. To determine
the sequence order, assign each EN_OUT_ to a slot
ranging from Slot 1 to Slot 12. EN_OUT_(s) assigned to
Slot 1 are turned on first, followed by outputs assigned
to Slot 2, and so on through Slot 12. Multiple EN_OUT_s
assigned to the same slot turn on at the same time.
Each slot includes a built-in configurable sequence delay
(registers r77h to r7Dh) ranging from 20 F s to 1.6s. During
a reverse sequence, slots are turned off in reverse order
starting from Slot 12. The MAX16065/MAX16066 can be
configured to power-down in simultaneous mode or in
reverse sequence mode as set in r75h[0]. See Tables 5
and 6 for the EN_OUT_ slot assignment bits, and Tables
3 and 4 for the sequence delays.
During power-up or power-down sequencing, the cur-
rent sequencer state can be found in r21h[4:0].
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16066ETL+ | 功能描述:监控电路 8Ch Power Supply 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 |
| MAX16066ETL+T | 功能描述:监控电路 8Ch Power Supply 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 |
| MAX16067ETJ+ | 功能描述:监控电路 6Ch System Manager 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 |
| MAX16067ETJ+T | 功能描述:监控电路 6Ch System Manager 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 |
| MAX16067EVKIT+ | 功能描述:监控电路 6-Channel System Manager 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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