- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385552 > MAX834EUK (Maxim Integrated Products, Inc.) IC-SM VOLTAGE MONITOR PDF資料下載
參數(shù)資料
| 型號： | MAX834EUK |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | IC-SM VOLTAGE MONITOR |
| 中文描述： | 集成電路釤電壓監(jiān)視器 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 77K |
| 代理商： | MAX834EUK |
M
Mic ropower, Latc hing Voltage Monitors
in S OT 23-5
6
_______________________________________________________________________________________
_______________Detailed Desc ription
The MAX834/MAX835 micropower voltage monitors con-
tain a 1.204V precision bandgap reference and a com-
parator with an output latch (Figure 1). The difference
between the two parts is the structure of the comparator
output driver. The MAX834 has an open-drain, N-channel
output driver that can be pulled up to a voltage higher
than V
CC
, but less than 11V. The MAX835’s output is
push/pull and can both source and sink current.
Programming the T rip V oltage (V
T RIP
)
Two external resistors set the trip voltage, V
TRIP
(Figure
2). V
TRIP
is the point at which the falling monitored volt-
age (typically V
CC
) causes
OUT
to go low. IN’s high
input impedance allows the use of large-value
resistors without compromising trip voltage accuracy. To
minimize current consumption, choose a value for R2
between 500k
and 1M
, then calculate R1 as follows:
R1 = R2 [(V
TRIP
/ V
TH
) - 1]
where V
TRIP
is the desired trip voltage and V
TH
is the
threshold voltage (1.204V). The voltage at IN must be at
least 1V less than V
CC
.
Latc hed-Output Operation
The MAX834/MAX835 feature a level-sensitive latch
input (CLEAR), designed to eliminate the need for hys-
teresis in battery undervoltage-detection applications.
When the monitored voltage (V
MON
) is above the pro-
grammed trip voltage (V
TRIP
) (as when the system bat-
tery is recharged or a fresh battery is installed), pulse
CLEAR low-high-low for at least 1μs to reset the output
latch (
OUT
goes high). When V
MON
falls below V
TRIP
,
OUT
goes low and remains low (even if V
MON
rises
above V
TRIP
), until CLEAR is pulsed high again with
V
MON
> V
TRIP
. Figure 3 shows the timing relationship
between V
MON
,
OUT
, and CLEAR.
> 1
μ
s
> 1
μ
s
> V
TRIP
< V
TRIP
V
CC
CLEAR
V
CC
0V
0V
OUT
> 1
μ
s
V
MON
> V
TRIP
< V
TRIP
V
CC
0V
OUT
V
MON
Figure 3a. Timing Diagram
Figure 3b. Timing Diagram, CLEAR = V
CC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX840 | Low-Noise, Regulated, -2V GaAsFET Bias(低噪,已調(diào)整的,-2V砷化鎵場效應(yīng)管偏置電源) |
| MAX843 | Low-Noise, Regulated, -2V GaAsFET Bias(低噪,已調(diào)整的,-2V砷化鎵場效應(yīng)管偏置電源) |
| MAX844 | Low-Noise, Regulated, -2V GaAsFET Bias(低噪,已調(diào)整的,-2V砷化鎵場效應(yīng)管偏置電源) |
| MAX845 | Isolated Transformer Driver for PCMCIA Applications(750mW,隔離變壓器驅(qū)動器) |
| MAX847EEI | 1-Cell, Step-Up Two-Way Pager System IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX834EUK+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 1.204V 5PIN SOT-23 - Rail/Tube 制造商:Maxim Integrated Products 功能描述:VOLT MONITOR SMD SOT-23-5 834 制造商:Maxim Integrated Products 功能描述:VOLT MONITOR, SMD, SOT-23-5, 834 |
| MAX834EUK+T | 功能描述:監(jiān)控電路 uPower Latching 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 |
| MAX834EUK-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 |
| MAX834EUK-T+ | 制造商:Maxim Integrated Products 功能描述:uP voltage monitor IC,MAX834EUK-T 1.204V |
| MAX835EUK | 制造商:Maxim Integrated Products 功能描述:MICROPOWER LATCHING VOLTAGE MONITO - Rail/Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。