參數(shù)資料
型號(hào)： MAX6876ETX+
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 電源管理
英文描述： EEPROM-Programmable, Quad, Power-Supply Tracker/Sequencer Circuit
中文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC36
封裝： 6 X 6 MM, 0.80 MM HEIGHT, MO-220WJJD-1, TQFN-36
文件頁(yè)數(shù)： 13/39頁(yè)
文件大?。?/td> 425K
代理商： MAX6876ETX+
MAX6876
EEPROM-Programmable, Quad,
Power-Supply Tracker/Sequencer Circuit
20
______________________________________________________________________________________
Manual Reset Input (
MR)
The manual reset (MR) input initiates a reset condition.
MR is internally pulled up to ABP through a 100k
resistor. When MR is low, RESET remains low for the
selected reset timeout period after MR transitions from
low to high (see the Reset Output (RESET) section).
Margin Input (
MARGIN)
MARGIN allows system-level testing while power sup-
plies exceed the normal ranges. Drive MARGIN low
before varying system voltages below/above the select-
ed threshold without signaling an error. MARGIN makes
it possible to vary the supplies without a need to repro-
gram the IN_ or PG_ thresholds and prevents
tracker/sequencer alerts or faults. Drive MARGIN high
or leave it floating for normal operating mode.
ENABLE
Drive logic ENABLE input high to initiate voltage track-
ing/sequencing during power-up operation. Drive logic
ENABLE low to initiate tracking/sequencing power-down
operation. When ENABLE is not used, connect to ABP.
When the MAX6876 is configured to use the I2C on/off
command, a valid I2C signal must be received before
the device begins the power-up tracking/sequencing
routine. The internal enable logic is an AND function of
the ENABLE logic, the TRKEN logic, and the I2C con-
trol/command logic (Figure 7). When all three AND gate
input variables are true (and the monitored IN/OUT volt-
ages meet their required thresholds), turn-on is allowed.
When any AND input variable becomes false, the turn-
off cycle (track/sequence down) begins immediately.
Drive ENABLE and TRKEN high if only the I2C com-
mand is to be used to turn on/off the device. The detec-
tors monitoring IN_ and OUT_ voltages, and
overcurrent conditions have a higher priority after a
power-on routine has been initiated by the internal
enable logic. If a fault occurs during the power-up
cycle, the device is powered down immediately, inde-
pendent of ENABLE, TRKEN, and the I2C shutdown
REGISTER
ADDRESS
EEPROM MEMORY
ADDRESS
BIT
RANGE
DESCRIPTION
05h
25h
[7:0]
IN2 Overvoltage Threshold
VTH = 1.0 + n x 20mV (if R08[6] = 0)
VTH = 0.5 + n x 10mV (if R08[6] = 1)
where n is the register content decimal representation. Note that VTH ranges
must be 1V to 5.5V and 0.5V to 3.05V, respectively.
06h
26h
[7:0]
IN3 Overvoltage Threshold
VTH = 1.0 + n x 20mV (if R08[5] = 0)
VTH = 0.5 + n x 10mV (if R08[5] = 1)
where n is the register content decimal representation. Note that VTH ranges
must be 1V to 5.5V and 0.5V to 3.05V, respectively.
07h
27h
[7:0]
IN4 Overvoltage Threshold
VTH = 1.0 + n x 20mV (if R08[4] = 0)
VTH = 0.5 + n x 10mV (if R08[4] = 1)
where n is the register content decimal representation. Note that VTH ranges
must be 1V to 5.5V and 0.5V to 3.05V, respectively.
Bit 7—If 0, 20mV steps in VTH setting for IN1
If 1, 10mV steps in VTH setting for IN1
Bit 6—If 0, 20mV steps in VTH setting for IN2
If 1, 10mV steps in VTH setting for IN2
Bit 5—If 0, 20mV steps in VTH setting for IN3
If 1, 10mV steps in VTH setting for IN3
08h
28h
[7:4]
Bit 4—If 0, 20mV steps in VTH setting for IN4
If 1, 10mV steps in VTH setting for IN4
Table 6. IN1–IN4 Threshold Settings (continued)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX6876ETX+ 功能描述:監(jiān)控電路 EEPROM-Prog Quad Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)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
MAX6876ETX+T 功能描述:監(jiān)控電路 EEPROM-Prog Quad Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)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
MAX6876ETX-T 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)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
MAX6876EVCMOD2 功能描述:監(jiān)控電路 Programmers, Development Systems RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)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
MAX6876EVKIT 功能描述:監(jiān)控電路 Programmers, Development Systems RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)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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