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參數(shù)資料
| 型號： | MAX6872ETJ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | EEPROM-Programmable, Hex/Quad, Power-Supply Sequencers/Supervisors with Charge-Pump Outputs |
| 中文描述： | 6-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC32 |
| 封裝： | 7 X 7 MM, 0.80 MM HEIGHT, MO-220, TQFN-32 |
| 文件頁數(shù)： | 38/48頁 |
| 文件大?。?/td> | 374K |
| 代理商： | MAX6872ETJ |
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MAX6872/MAX6873
EEPROM-Programmable, Hex/Quad,
Power-Supply Sequencers/Supervisors
______________________________________________________________________________________
43
Forcing Programmable
Outputs High During Power-Up
A weak 10A pulldown holds all programmable outputs
low during power-up until ABP exceeds the undervolt-
age lockout (UVLO) threshold. Applications requiring a
guaranteed high programmable output for ABP down to
GND require external pullup resistors to maintain the
logic state until ABP exceeds UVLO. Use 20k
resis-
tors for most applications.
Driving High-Side MOSFET
Switches with the MAX6872/MAX6873
High-side MOSFET switches are commonly used in
power-supply sequencing applications. First, configure
the programmable output of the MAX6872/MAX6873 as
an active-low charge-pump output and set the condi-
tions to assert this output. Connect the programmable
output to the gate of an n-channel MOSFET. As the
conditions to deassert this output are met, the output
deasserts high (VABP +5V), turning on the FET, thus
allowing the voltage on the drain to pass through to the
downstream device (see Figure 9).
Table 27. Fault Registers (60h–62h)
REGISTER
ADDRESS
BIT
RANGE
DESCRIPTION
[0]
1 = IN1 falls below primary undervoltage threshold.
[1]
1 = IN2 falls below primary undervoltage threshold.
[2]
1 = IN3 falls below primary undervoltage threshold.
[3]
1 = IN4 falls below primary undervoltage threshold.
[4]
1 = IN5 (MAX6872 only) falls below primary undervoltage threshold.
[5]
1 = IN6 (MAX6872 only) falls below primary undervoltage threshold.
60h
[7:6]
Not used.
[0]
1 = IN1 falls below secondary undervoltage threshold or rises above secondary overvoltage threshold,
depending on the settings in register 0Ch (see Tables 2, 3, and 4).
[1]
1 = IN2 falls below secondary undervoltage threshold or rises above secondary overvoltage threshold,
depending on the settings in register 0Ch (see Tables 2, 3, and 4).
[2]
1 = IN3 falls below secondary undervoltage threshold or rises above secondary overvoltage threshold,
depending on the settings in register 0Ch (see Tables 2, 3, and 4).
[3]
1 = IN4 falls below secondary undervoltage threshold or rises above secondary overvoltage threshold,
depending on the settings in register 0Ch (see Tables 2, 3, and 4).
[4]
1 = IN5 (MAX6872 only) falls below secondary undervoltage threshold or rises above secondary
overvoltage threshold, depending on the settings in register 0Ch (see Tables 2, 3, and 4).
[5]
1 = IN6 (MAX6872 only) falls below secondary undervoltage threshold or rises above secondary
overvoltage threshold, depending on the settings in register 0Ch (see Tables 2, 3, and 4).
61h
[7:6]
Not used.
[0]
1 = WD1 asserted.
[1]
1 = WD2 asserted.
[2]
1 = GPI1 asserted.
[3]
1 = GPI2 asserted.
[4]
1 = GPI3 asserted.
[5]
1 = GPI4 asserted.
[6]
1 = MR asserted.
62h
[7]
Not used.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6872ETJ+ | 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 |
| MAX6872ETJ+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 |
| MAX6872ETJ-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 |
| MAX6873ETJ | 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 |
| MAX6873ETJ+ | 功能描述:監(jiān)控電路 EEPROM-Prog Quad 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 |
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