參數(shù)資料
型號(hào)： MAX6307UK31D3-T
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 電源管理
英文描述： 5-Pin, Multiple-Input, Programmable Reset ICs
中文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5
封裝： MO-178AA, SOT-23, 5 PIN
文件頁(yè)數(shù)： 6/16頁(yè)
文件大?。?/td> 104K
代理商： MAX6307UK31D3-T
M
open-drain, N-channel output. The MAX6308/MAX6309/
MAX6310 feature an active-low, complementary output
structure that both sinks and sources current, and the
MAX6311/MAX6312/MAX6313 have an active-high com-
plementary reset output.
The MAX6305/MAX6308/MAX6311 switch from under-
voltage lockout operation to normal operation between
1.5V < V
CC
< 2.5V. Below 1.5V, V
CC
undervoltage-
lockout mode asserts
RESET
. Above 2.5V, V
CC
normal-
operation mode asserts reset if RST IN_ falls below the
RST IN_ threshold.
Manual-Reset Input
(MAX 6306/MAX 6309/MAX 6312)
Many μP-based products require manual-reset capability,
allowing an operator or external logic circuitry to initiate a
reset. A logic low on
MR
asserts reset. Reset remains
asserted while
MR
is low, and for a reset active timeout
period (t
RP
) after
MR
returns high. This input has an inter-
nal 63.5k
pull-up resistor, so it can be left open if it is not
used.
MR
can be driven with TTL-logic levels in 5V sys-
tems, with CMOS-logic levels in 3V systems, or with open-
drain/collector output devices. Connect a normally open
momentary 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 0.1μF capacitor from
MR
to ground provides additional noise immunity.
The
MR
pin has internal ESD-protection circuitry that may
be forward biased under certain conditions, drawing
excessive current. For example, assume the circuitry driv-
ing
MR
uses a +5V supply other than V
CC
. If V
CC
drops or
browns out lower than +4.7V,
MR
’s absolute maximum rat-
ing is violated (-0.3V to (V
CC
+ 0.3V)), and undesirable
current flows through the ESD structure from
MR
to V
CC
.
To avoid this, it is recommended that the supply for the
MR
pin be the same as the supply monitored by V
CC
. In this
way, the voltage at
MR
will not exceed V
CC
.
Adjustable Reset Inputs
The MAX6305–MAX6313 each have one or more reset
inputs (RST IN_ /OVRST IN). These inputs are com-
pared to the internal reference voltage (Figure 1).
Connect a resistor voltage divider to RST IN_ such that
V
RST IN_
falls below V
RSTH
(1.23V) when the monitored
voltage (V
IN
) falls below the desired reset threshold
(V
TH
) (Figure 2). Calculate the desired reset voltage
with the following formula:
V
TH
= R1 + R2
RSTH
R2
5-Pin, Multiple-Input,
Programmable Reset ICs
6
_______________________________________________________________________________________
RST IN1
*
+1.23V
+1.23V
+1.23V
+1.23V
RST IN2
RESET
GENERATOR
RESET***
OVRST IN
GND
V
CC
V
CC
MR
RESET**
MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/MAX6313 ONLY
MAX6305–MAX6310 ONLY
MAX6311/MAX6312/MAX6313 ONLY
MAX6307/MAX6310/MAX6313 ONLY
MAX6305/MAX6308/MAX6311 ONLY
MAX6306/MAX6309/MAX6312 ONLY
*
**
***
MAX6305–MAX6313
Figure 1. Functional Diagram
相關(guān)PDF資料
PDF描述
MAX6307UK31D4-T 5-Pin, Multiple-Input, Programmable Reset ICs
MAX6307UK32D1-T 5-Pin, Multiple-Input, Programmable Reset ICs
MAX6307UK32D2-T 5-Pin, Multiple-Input, Programmable Reset ICs
MAX6307UK38D2-T 5-Pin, Multiple-Input, Programmable Reset ICs
MAX6307UK38D3-T 5-Pin, Multiple-Input, Programmable Reset ICs
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX6307UK31D4 制造商:Maxim Integrated Products 功能描述:5-PIN MULTIPLE-INPUT PROGRAMMABLE - Rail/Tube
MAX6307UK31D4+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
MAX6307UK31D4T 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Voltage Detector
MAX6307UK31D4-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
MAX6307UK32D1 制造商:Maxim Integrated Products 功能描述:5-PIN MULTIPLE-INPUT PROGRAMMABLE - Rail/Tube
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