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| 型号： | MAX6870ETJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/51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： | 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： | 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-WQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（7x7） |
| 包装： | 管件 |
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EEPROM-Programmable Hex/Quad
Power-Supply Sequencers/Supervisors with ADC
Table 1. Programmable Features (continued)
FEATURE
General-Purpose Logic ?
Active high or active low logic levels
DESCRIPTION
Inputs (GPI1 – GPI4)
Watchdog Timers
Auxiliary Inputs
(AUXIN1, AUXIN2)
Manual Reset Input
( MR )
Margining Input
( MARGIN )
Reference Input
(REFIN)
10-Bit ADC*
Write Disable
Configuration Lock
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
Configure GPI_ as inputs to watchdog timers or programmable output stages
Clear dependent on any combination of one GPI_ input and one programmable output, a GPI_ input
only, or a programmable output only
Initial watchdog timeout period of 6.25ms, 25ms, 100ms, 400ms, 1.6s, 6.4s, 25.6s, or 102.4s
Normal watchdog timeout period of 6.25ms, 25ms, 100ms, 400ms, 1.6s, 6.4s, 25.6s, or 102.4s
Watchdog enable/disable
Initial watchdog timeout period enable/disable
Monitored by the internal 10-bit ADC
Forces PO_ into the active output state when MR = GND
PO_ deassert after MR releases high and the PO_ timeout period expires
PO_ cannot be a function of MR only
Holds PO_ in existing state or asserts PO_ to a programmed output state, independent of changes in
monitored inputs or watchdog timers, when MARGIN = GND
Overrides MR when both assert at the same time
Internal +1.25V reference voltage
Goes high-impedance when internal reference selected
External reference voltage input from +1.225V to +1.275V
Sets ADC voltage range
Monitors IN_, AUXIN1, and AUXIN2
Completes conversion of all eight inputs in 200ms
Reference voltage sets ADC range
Read ADC data from SMBus/I 2 C interface
Locks user EEPROM based on PO_
Locks configuration EEPROM
* ADC does not control programmable outputs.
x = TH
Set the primary and secondary threshold voltages for
each voltage-detector input with registers 00h – 0Bh.
Each primary threshold voltage must be an undervolt-
age threshold. Configure each secondary threshold
V ? 1.25 V
0 . 025 V
for + 1 . 25 V to + 7 . 625 V range
voltage as an undervoltage or overvoltage threshold
(see register 0Ch). Set the threshold range for each
voltage detector with register 0Dh.
High Voltage Input (IN1)
IN1 offers threshold voltages of +2.5V to +13.2V in
50mV increments, or +1.25V to +7.625V in 25mV incre-
ments. Use the following equations to set the threshold
voltages for IN1:
where V TH is the desired threshold voltage and x is the
decimal code for the desired threshold (Table 2). For
the +2.5V to +13.2V range, x must equal 214 or less,
otherwise the threshold exceeds the maximum operat-
ing voltage of IN1.
Bipolar Voltage Input (IN2)
IN2 offers negative thresholds from -2.5V to -15.25V in
50mV increments, or from -1.25V to -7.625V in 25mV
increments. Alternatively, IN2 offers positive thresholds
x = TH
V ? 2.5 V
0 . 05 V
for + 2 . 5 V to + 13 . 2 V range
from +2.5V to +15.25V in 50mV increments, or +1.25V
to +7.625V in 25mV increments. Use the following
equations to set the threshold voltages for IN2:
14
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6870ETJ+ | 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 |
| MAX6870ETJ+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 |
| MAX6870ETJ-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 |
| MAX6870EVCMAXQ | 制造商:Maxim Integrated Products 功能描述:EEPROM-PROGRAMMABLE HEX/QUAD POWER-SUPPLY SEQ - Rail/Tube |
| MAX6870EVCMOD2 | 制造商:Maxim Integrated Products 功能描述:EEPROM-PROGRAMMABLE HEX/QUAD POWER-SUPPLY SEQ - Rail/Tube |
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