參數(shù)資料
型號(hào)： MAX6460
廠商： Maxim Integrated Products, Inc.
英文描述： High-Voltage, Low-Current Voltage Monitors in SOT Packages
中文描述： 高壓、低電流電壓監(jiān)測(cè)器，SOT封裝
文件頁(yè)數(shù)： 8/15頁(yè)
文件大?。?/td> 270K
代理商： MAX6460
M
Detailed Description
Each of the MAX6457
–
MAX6460 high-voltage (4V to
28V), low-power voltage monitors include a precision
bandgap reference, one or two low-offset-voltage com-
parators, internal threshold hysteresis, internal timeout
period, and one or two high-voltage open-drain outputs.
Programming the Trip Voltage (V
TRIP
)
Two external resistors set the trip voltage, V
TRIP
(Figure 5).
V
TRIP
is the point at which the applied voltage (typically
V
CC
) toggles OUT. The MAX6457/MAX6458/MAX6459/
MAX6460
’
s high input impedance allows large-value
resistors without compromising trip-voltage accuracy.
To minimize current consumption, select a value for R2
between 10k
and 1M
, then calculate R1 as follows:
where V
TRIP
= desired trip voltage (in volts), V
TH
=
threshold trip voltage (V
TH
+ for overvoltage detection
or V
TH
- for undervoltage detection).
Use the MAX6460 voltage reference (REF) to set the
trip threshold by connecting IN+ or IN- through a volt-
age divider (within the inputs common-mode voltage
range) to REF. Small leakage currents into the com-
parators inputs allows use of large value resistors to
prevent loading the reference and affecting its accura-
cy. Figure 5b shows an active-high power-good output.
Use the following equation to determine the resistor val-
ues when connecting REF to IN-:
where V
REF
= reference output voltage (2.25V, typ),
V
REFD
= divided reference, V
TRIP
= desired trip thresh-
old in (in volts).
For an active-low power-good output, connect the
resistor divider R1 and R2 to the inverting input and the
reference-divider network to the noninverting input.
Alternatively, connect an external reference less than
1.4V to either input.
R
R
V
V
TRIP
REFD
1
2
1
=
V
V
R
3
R
R
REFD
REF
=
+
4
4
R
R
V
V
TRIP
TH
1
2
1
=
-
High-Voltage, Low-Current Voltage Monitors in
SOT Packages
8
_______________________________________________________________________________________
V
CC
IN+
GND
OUT
(OUTB FOR
MAX6459)
R1
V
CC
R2
R
PULLUP
OUT
(OUTB)
MAX6457–
MAX6460
V
TRIP
= V
TH
R1 + R2
R2
Figure 5a. Programming the Trip Voltage
V
CC
IN+
REF
IN-
GND
R1
V
TRIP
V
REFD
R2
R3
R4
R
PULLUP
OUT
OUT
MAX6460
Figure 5b. Programming the MAX6460 Trip Voltage
V
TH+
V
TH-
V
IN+
V
OUT
0
V
CC
V
HYST
t
TP
t
TP
Figure 6. Input and Output Waveforms (Noninverting Input Varied)
相關(guān)PDF資料
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MAX6511UT___-T Triac; Thyristor Type:Standard; Peak Repetitive Off-State Voltage, Vdrm:800V; On-State RMS Current, IT(rms):35A; Gate Trigger Current (QI), Igt:50mA; Current, It av:35A; Forward Current:35A; Gate Trigger Current Max, Igt:50mA RoHS Compliant: Yes
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX6460UT 制造商:Maxim Integrated Products 功能描述:HIGH-VOLTAGE, LOW-CURRENT VOLTAGE MONITORS IN - Rail/Tube
MAX6460UT+ 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 6PIN SOT-23 - Rail/Tube
MAX6460UT+T 功能描述:監(jiān)控電路 Single Low C/V 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
MAX6460UT-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
MAX6461UK16 制造商:Maxim Integrated Products 功能描述:ULTRA-LOW-POWER VOLTAGE DETECTORS A - Cut Tape Product
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