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參數(shù)資料
| 型號(hào)： | MAX6709FUB+T |
| 廠(chǎng)商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 電源管理 |
| 英文描述： | Low-Voltage, High-Accuracy, Quad Voltage Monitors in µMAX Package |
| 中文描述： | 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, MO-187CBA, MICRO, SOP-10 |
| 文件頁(yè)數(shù)： | 18/18頁(yè) |
| 文件大小： | 530K |
| 代理商： | MAX6709FUB+T |
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resistors are not required when using the MAX6709/
MAX6714 because hysteresis is built into the device.
MAX6709/MAX6714 hysteresis is typically 0.3% of the
threshold voltage.
Undervoltage Detection Circuit
The open-drain outputs of the MAX6709/MAX6714 can
be configured to detect an undervoltage condition.
Figure 3 shows a configuration where an LED turns on
when the comparator output is low, indicating an
undervoltage condition.
The MAX6709/MAX6714 can also be used in applica-
tions such as system supervisory monitoring, multivolt-
age level detection, and VCC bar graph monitoring
(Figure 4).
Window Detection
A window detector circuit uses two auxiliary inputs in a
configuration such as the one shown in Figure 5.
External resistors R1–R4 set the two threshold voltages
(VTH1 and VTH4) of the window detector circuit. Window
width (
VTH) is the difference between the threshold
voltages (Figure 6).
Adjustable Input
The MAX6709 offers several monitor options with
adjustable reset thresholds. The MAX6714 has three
monitored inputs with adjustable thresholds. The thresh-
old voltage at each adjustable IN_ (PFI_) input is typically
0.62V. To monitor a voltage >0.62V, connect a resistor-
divider network to the circuit as shown in Figure 7.
VINTH = 0.62V (R1 + R2) / R2
MAX6709/MAX6714
Low-Voltage, High-Accuracy Quad, Voltage
Monitors in MAX Package
_______________________________________________________________________________________
9
IN1
VCC
GND
IN2
IN3
IN4
PWRGD1
PWRGD2
PWRGD3
PWRGD4
5V
MAX6709
V1
V2
V3
V4
Figure 3. Quad Undervoltage Detector with LED Indicators
D3
D1
D2
D4
IN1
VCC
GND
IN2
IN3
IN4
PWRGD1
PWRGD2
PWRGD3
PWRGD4
VIN (5V)
5V
MAX6709
Figure 4. VCC Bar Graph Monitoring
IN1
VCC
GND
IN2
IN3
IN4
PWRGD1
PWRGD2
PWRGD3
PWRGD4
5V
MAX6709
OUT
INPUT
R2
R4
R1
R3
VTH1 =
(1 + )VREF
R2
R1
VTH4 =
(1 + )VREF
R4
R3
VREF = 0.62V
Figure 5. Window Detection
PWRGD1
PWRGD4
OUT
VTH1
VTH4
VTH
Figure 6. Output Response of Window Detector Circuit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6709GUB | 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(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)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 |
| MAX6709GUB+ | 功能描述:監(jiān)控電路 Quad Voltage Monitor 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(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)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 |
| MAX6709GUB+T | 功能描述:監(jiān)控電路 Quad Voltage Monitor 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(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)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 |
| MAX6709GUB-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(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)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 |
| MAX6709HUB | 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(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)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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