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參數(shù)資料
| 型號： | MAX6709FUB+T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 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 |
| 文件頁數(shù)： | 2/18頁 |
| 文件大?。?/td> | 530K |
| 代理商： | MAX6709FUB+T |
MAX6709/MAX6714
Or, solved in terms of R1:
R1 = R2 ((VINTH / 0.62V) - 1)
Unused Inputs
The unused inputs (except the adjustable) are internally
connected to ground through the lower resistors of the
threshold-setting resistor pairs. The adjustable input,
however, must be connected to ground if unused.
Reset Output
The MAX6714 RESET output asserts low when VCC
drops below its specified threshold or MR asserts low
and remains low for the reset timeout period (140ms
min) after VCC exceeds its threshold and MR deasserts
(Figure 8). The output is open drain with a weak (10A)
internal pullup to VCC. For many applications, no exter-
nal pullup resistor is required to interface with other
logic devices. An external pullup resistor to any voltage
from 0 to 5.5V overdrives the internal pullup if interfac-
ing to different logic supply voltages (Figure 9). Internal
circuitry prevents reverse current flow from the external
pullup voltage to VCC.
Manual Reset Input
Many P-based products require manual reset capabili-
ty, allowing the operator, a test technician, or external
logic circuitry to initiate a reset. A logic low on MR
asserts RESET low. RESET remains asserted while MR is
low, and during the reset timeout period (140ms min)
after MR returns high. The MR input has an internal 20k
pullup resistor to VCC, so it can be left open if unused.
Drive MR with TTL or CMOS-logic levels, or with open-
drain/collector outputs. Connect a normally open momen-
tary switch from MR to GND to create a manual reset
function; external debounce circuitry is not required. If
MR is driven from long cables or if the device is used in a
noisy environment, connecting a 0.1F capacitor from
MR to GND provides additional noise immunity.
Reseting the P from a 2nd Voltage
(MAX6714)
The MAX6714 can be configured to assert a reset from a
second voltage by connecting the power-fail output to
manual reset. As the VPFI_ falls below its threshold, PFO
goes low and asserts the reset output for the reset time-
out period after the manual reset input is deasserted.
(See Typical Operating Circuit.)
Power-Supply Bypassing and Grounding
The MAX6709/MAX6714 operate from a single 2.0V to
5.5V supply. In noisy applications, bypass VCC with a
0.1F capacitor as close to VCC as possible.
Low-Voltage, High-Accuracy, Quad Voltage
Monitors in MAX Package
10
______________________________________________________________________________________
R1 = R2
(
- 1
)
VINTH
0.62V
VREF = 0.62V
R2
R1
VINTH
Figure 7. Setting the Auxiliary Monitor
VTH_
90%
10%
VCC
VTH_
RESET
tRP
tRD
Figure 8. RESET Output Timing Diagram
VCC
GND
VCC = 3.3V
5V
MAX6714
VCC
GND
RESET
100k
Figure 9. Interfacing to Different Logic Supply Voltage
相關(guān)PDF資料 |
PDF描述 |
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| MAX6709GUB+ | Low-Voltage, High-Accuracy, Quad Voltage Monitors in µMAX Package |
| MAX6709GUB+T | Low-Voltage, High-Accuracy, Quad Voltage Monitors in µMAX Package |
| MAX6709IUB+ | Low-Voltage, High-Accuracy, Quad Voltage Monitors in µMAX Package |
| MAX6709IUB+T | Low-Voltage, High-Accuracy, Quad Voltage Monitors in µMAX Package |
| MAX6709JUB+ | Low-Voltage, High-Accuracy, Quad Voltage Monitors in µMAX Package |
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 |
| MAX6709GUB+ | 功能描述:監(jiān)控電路 Quad Voltage Monitor 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 |
| MAX6709GUB+T | 功能描述:監(jiān)控電路 Quad Voltage Monitor 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 |
| MAX6709GUB-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 |
| MAX6709HUB | 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 |
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