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參數(shù)資料
| 型號(hào)： | MAX6885ETP+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | EEPROM-Programmable, Hex, Power-Supply Supervisors with an ADC |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC20 |
| 封裝： | 5 X 5 MM, 0.80 MM PITCH, MO-220WHHC, QFN-20 |
| 文件頁數(shù)： | 2/34頁 |
| 文件大小： | 310K |
| 代理商： | MAX6885ETP+ |
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MAX6884/MAX6885
The MAX6884/MAX6885 feature a watchdog timer with
programmable initial and normal timeout periods from
6.25ms to 102.4s. WDO asserts when WDI is not tog-
gled from high-to-low or low-to-high within the appro-
priate watchdog timeout period. Program WDO to
assert RESET.
Program the MAX6884/MAX6885 to receive power
through IN1–IN4 or VCC (see the Powering the
MAX6884/MAX6885 section). Outputs remain asserted
while the voltage that is supplying the device is below
UVLO (2.5V) and above 1V (see Figure 1).
EEPROM-Programmable, Hex
Power-Supply Supervisory Circuits
10
______________________________________________________________________________________
Table 1. Programmable Features
*ADC does not affect programmable outputs.
FEATURE
DESCRIPTION
Input Voltages IN1–IN6
Primary undervoltage threshold
Secondary undervoltage or overvoltage threshold
1V to 5.8V thresholds in 20mV increments
0.5V to 3.05V thresholds in 10mV increments
0.1667V to 1.017V thresholds in 3.3mV increments in high-impedance mode
Programmable Output RESET
Dependency on IN1–IN6, MR, UV/OV, and/or WDO
Active-low, weak pullup, or open-drain output
Programmable timeout periods of 25s, 1.5625ms, 6.25ms, 25ms, 50ms, 200ms, 400ms, or
1.6s
Programmable Output UV/OV
Dependency on IN1–IN6, MR, and/or RESET
Active-low, weak pullup, or open-drain output
Programmable timeout periods of 25s, 1.5625ms, 6.25ms, 25ms, 50ms, 200ms, 400ms, or
1.6s
Programmable Output WDO
Active-low, weak pullup, or open-drain output
Watchdog Timer
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
VCC Power Mode
Programs whether the device is powered from the highest IN_ input or from an external supply
connected to VCC
Manual Reset Input MR
Program RESET or UV/OV to assert while MR is asserted
Reference Input REFIN
Internal +1.25V reference voltage
Goes high impedance when internal reference is selected
External reference voltage input from 1.225V to 1.275V
Sets ADC voltage range
10-Bit ADC*
Samples voltages at IN1–IN6, AUXIN, and VCC
Completes conversion of all eight inputs in 200ms
Reference voltage sets ADC range
Read ADC data from SMBus/I
2C interface
Write Disable
Locks user EEPROM based on RESET or UV/OV assertion
Configuration Lock
Locks configuration registers and EEPROM
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| 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 |
| MAX6887BETE+ | Hex/Quad, Power-Supply Supervisory Circuits |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6885ETP+ | 功能描述:監(jiān)控電路 EEPROM-Prog Hex Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6885ETP+T | 功能描述:監(jiān)控電路 EEPROM-Prog Hex Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6885ETP-T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6886ETP | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6886ETP+ | 功能描述:監(jiān)控電路 Pin-Selectable Hex Power-Sup Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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