- 您現在的位置：買賣IC網 > PDF目錄224190 > MAX6889ETJ+ (MAXIM INTEGRATED PRODUCTS INC) EEPROM-Programmable, Octal/Hex/Quad, Power-Supply Sequencers/Supervisors PDF資料下載
參數資料
| 型號： | MAX6889ETJ+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | EEPROM-Programmable, Octal/Hex/Quad, Power-Supply Sequencers/Supervisors |
| 中文描述： | 8-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQCC32 |
| 封裝： | 5 X 5 MM, TQFN-32 |
| 文件頁數： | 8/40頁 |
| 文件大?。?/td> | 255K |
| 代理商： | MAX6889ETJ+ |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當前第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁
MAX6889/MAX6890/MAX6891
EEPROM-Programmable, Octal/Hex/Quad,
Power-Supply Sequencers/Supervisors
16
______________________________________________________________________________________
MARGIN
MARGIN allows system-level testing while power sup-
plies exceed the normal ranges. Driving MARGIN low
forces the programmable outputs to hold the last state
while system-level testing occurs. Leave MARGIN
unconnected or connect to DBP if unused. An internal
10A current source pulls MARGIN to DBP. The state of
each programmable output does not change while
MARGIN = GND. MARGIN overrides MR if both assert
at the same time.
Programmable Outputs
The MAX6889 features ten programmable outputs, the
MAX6890 features eight programmable outputs, and
the MAX6891 features five programmable outputs.
Selectable output stage configurations include: active-
low or active-high, open drain, or weak pullup. During
power-up, the programmable outputs pull to GND with
an internal 10A current sink for 1V < VCC < VUVLO.
The programmable outputs remain in their active states
until their respective PO timeout period expires, and all
of the programmed conditions are met for each output.
Any output programmed to depend on no condition
always remains in its active state (Table 17). An output
configured as active-high is considered asserted when
that output is logic-high.
The voltage monitors generate fault signals (logical 0) to
the MAX6889/MAX6890/MAX6891s’ logic array when an
input voltage is below the programmed undervoltage
threshold. For example, the PO3 (Table 9) programmable
output may depend on the IN1 undervoltage threshold,
and the state of GPI1. Write “1”s to R10h[0] and R11h[1]
to configure as indicated. IN1 must be above the under-
voltage threshold (Table 2) and GPI1 must be inactive
(Table 5) to be a logic “1,” then PO3 deasserts. The logic
state of PO3, in this example, is equivalent to the logical
statement: “V1 GPI1.”
Registers 0Ah through 27h configure each of the pro-
grammable outputs. Programmable timing blocks set
the PO_ timeout period from 25s to 1600ms for each
programmable output. See Table 17 to set the active
state (active-high or active-low) for each programmable
output and Tables 18 and 19 to select the output stage
types, and PO_ timeout periods for each output. Each
programmable output allows a different set of condi-
tions to assert each output as shown in Tables 7–16.
REGISTER
ADDRESS
EEPROM
MEMORY
ADDRESS
BIT
RANGE
DESCRIPTION
07h
87h
[7:0]
IN8 undervoltage detector threshold (V8) (see equations in the Inputs section)
08h
88h
[7]
IN8 range selection.
0 = 2.5V to 15.25V range in 50mV increments.
1 = 1.25V to 7.625V range in 25mV increments.
09h
89h
[7]
IN8 input impedance. 0 = normal mode. 1 = high-Z mode, with a 0.1667V to 1.0167V
range in 3.3mV increments.
Table 4. IN8 Threshold Settings
REGISTER
ADDRESS
EEPROM
ADDRESS
BIT
RANGE
DESCRIPTION
[0]
GPI1. 0 = active-low, 1 = active-high.
[1]
GPI2. 0 = active-low, 1 = active-high.
[2]
GPI3. 0 = active-low, 1 = active-high.
28h
A8h
[3]
GPI4 (MAX6889/MAX6890 only). 0 = active-low, 1 = active-high.
Table 5. GPI1–GPI4 Active Logic States
相關PDF資料 |
PDF描述 |
|---|---|
| MAX708SMJA/883B | 1-CHANNEL POWER SUPPLY SUPPORT CKT, CDIP8 |
| MAX8867C/D25 | 2.5 V FIXED POSITIVE LDO REGULATOR, 0.12 V DROPOUT, UUC5 |
| MAYS0750Z | 7.5 V, 0.15 W, SILICON, UNIDIRECTIONAL VOLTAGE REGULATOR DIODE |
| MB(2)P-90S | 2 CONTACT(S), MALE, RIGHT ANGLE TWO PART BOARD CONNECTOR, SOLDER |
| MB(2)P-90 | 2 CONTACT(S), MALE, RIGHT ANGLE TWO PART BOARD CONNECTOR, SOLDER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX6889ETJ+ | 功能描述:監(jiān)控電路 EEPROM-Prog Octal Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數: 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6889ETJ+T | 功能描述:監(jiān)控電路 EEPROM-Prog Octal Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數: 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6889ETJ-T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數: 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6889EVCMAXQ | 功能描述:監(jiān)控電路 EEPROM-Programmable Octal/Hex/Quad Power-Supply Sequencers/Supervisors RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數: 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6889EVCMAXQU | 功能描述:監(jiān)控電路 Evaluation Kit/Evaluation System for the MAX6889 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數: 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。