參數(shù)資料
型號(hào)： MAX6728
廠商： Maxim Integrated Products, Inc.
英文描述： Replaced by TPL9202 : Microcontroller Power Supply and Low-Side Driver 20-HTSSOP -40 to 125
中文描述： 雙/三路、超低電壓、SOT23封裝、微處理器監(jiān)控電路
文件頁(yè)數(shù)： 1/19頁(yè)
文件大?。?/td> 418K
代理商： MAX6728
General Description
The MAX6715–MAX6729 are ultra-low-voltage microproces-
sor (μP) supervisory circuits designed to monitor two or three
system power-supply voltages. These devices assert a sys-
tem reset if any monitored supply falls below its factory-
trimmed or adjustable threshold and maintain reset for a
minimum timeout period after all supplies rise above their
thresholds. The integrated dual/triple supervisory circuits sig-
nificantly improve system reliability and reduce size com-
pared to separate ICs or discrete components.
These devices monitor primary supply voltages (V
CC
1) from
1.8V to 5.0V and secondary supply voltages (V
CC
2) from
0.9V to 3.3V with factory-trimmed reset threshold voltage
options (see
Reset Voltage Threshold Suffix Guide
). An
externally adjustable RSTIN input option allows customers to
monitor a third supply voltage down to 0.62V. These devices
are guaranteed to be in the correct reset output logic state
when either V
CC
1 or V
CC
2 remains greater than 0.8V.
A variety of push-pull or open-drain reset outputs along with
watchdog input, manual reset input, and power-fail input/out-
put features are available (see
Selector Guide
). Select reset
timeout periods from 1.1ms to 1120ms (min) (see
Reset
Timeout Period Suffix Guide
). The MAX6715–MAX6729 are
available in small 5, 6, and 8-pin SOT23 packages and oper-
ate over the -40°C to +85°C temperature range.
Applications
Multivoltage Systems
Telecom/Networking Equipment
Computers/Servers
Portable/Battery-Operated Equipment
Industrial Equipment
Printer/Fax
Set-Top Boxes
Typical Operating Circuit
Features
o
V
CC
1 (primary supply) Reset Threshold Voltages
from 1.58V to 4.63V
o
V
CC
2 (secondary supply) Reset Threshold
Voltages from 0.79V to 3.08V
o
Externally Adjustable RSTIN Threshold for
Auxiliary/Triple-Voltage Monitoring
(0.62V internal reference)
o
Watchdog Timer Option
35s (min) Long Startup Period
1.12s (min) Normal Timeout Period
o
Manual Reset Input Option
o
Power-Fail Input/Power-Fail Output Option
(Push-Pull and Open-Drain Active-Low)
o
Guaranteed Reset Valid Down to V
CC
1 or
V
CC
2 = 0.8V
o
Reset Output Logic Options
o
Immune to Short V
CC
Transients
o
Low Supply Current 14μA (typ) at 3.6V
o
Small 5, 6, and 8-Pin SOT23 Packages
Ordering Information
M
Dual/Triple Ultra-Low-Voltage SOT23 μP
Supervisory Circuits
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
IN
OUT2
OUT1
DC/DC
CONVERTER
UNREGULATED
DC
R1
R2
V
CC
1
V
CC
2
RSTIN/PFI
MR
RST
WDI
PFO
MAX67_ _
PUSHBUTTON
SWITCH
I/O
SUPPLY
CORE
SUPPLY
RESET
I/O
NMI
μ
P
1.8V
0.9V
19-2325; Rev 3; 6/03
Pin Configurations appear at end of data sheet.
Selector Guide appears at end of data sheet.
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
6 SOT23-6
6 SOT23-6
5 SOT23-5
5 SOT23-5
6 SOT23-6
6 SOT23-6
MAX6715
UT_ _D_ -T
MAX6716
UT_ _D_ -T
MAX6717
UK_ _D_ -T
MAX6718
UK_ _D_ -T
MAX6719
UT_ _D_ -T
MAX6720
UT_ _D_ -T
Note:
The first “_ _” are placeholders for the threshold voltage
levels of the devices. Desired threshold levels are set by the part
number suffix found in the Reset Voltage Threshold Suffix Guide.
The “_” after the D is a placeholder for the reset timeout delay
time. Desired delay time is set using the timeout period suffix
found in the Reset Timeout Period Suffix Guide. For example the
MAX6716UTLTD3-T is a dual-voltage supervisor V
TH
1 = 4.625V,
V
TH
2 = 3.075V, and 210ms (typ) timeout period.
Ordering Information continued at end of data sheet.
相關(guān)PDF資料
PDF描述
MAX6729 Replaced by TPL9202 : Microcontroller Power Supply and Low-Side Driver 20-HTSSOP -40 to 125
MAX675EJA +5V Precision Voltage Reference
MAX675CPA 30V N-Channel PowerTrench MOSFET
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MAX675CTV +5V Precision Voltage Reference
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX6728AKALTD3+ 制造商:Maxim Integrated Products 功能描述:MAXIM MAX6728AKALTD3+, SUPERVISORS - Boxed Product (Development Kits) 制造商:Maxim Integrated Products 功能描述:Maxim MAX6728AKALTD3+, Microprocessor Supervisory Circuit 4.625V/3.075V/Adj Reset Threshold 1.8V-5.0V VCC1 0.9V-3.3V VCC2 8-pin SOT23
MAX6728AKALTD3+T 功能描述:監(jiān)控電路 Dual uPower Supervisor 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
MAX6728AKARVD3+ 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 2.625V/1.575V 15UA 8PIN SOT-23 - Cut Tape Product
MAX6728AKARVD3+T 功能描述:監(jiān)控電路 Dual uPower Supervisor 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
MAX6728AKASDD3+ 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 2.925V/0.788V 15UA 8PIN SOT-23 - Cut Tape Product
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