參數(shù)資料
型號(hào)： MAX690AESA-T
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 電源管理
英文描述： Microprocessor Supervisory Circuits
中文描述： 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8
封裝： SOP-8
文件頁(yè)數(shù)： 1/14頁(yè)
文件大小： 661K
代理商： MAX690AESA-T
MAX690A/MAX692A/MAX802L/MAX802M/MAX805L
Microprocessor Supervisory Circuits
________________________________________________________________ Maxim Integrated Products
1
1
2
3
4
8
7
6
5
VBATT
RESET (RESET)
WDI
PFO
PFI
GND
VCC
VOUT
DIP/SO
TOP VIEW
MAX690A
MAX692A
MAX802L
MAX802M
MAX805L
( ) ARE FOR MAX805L ONLY.
_________________Pin Configurations
VCC
NMI
I/O LINE GND
BUS
VCC
CMOS
RAM
GND
UNREGULATED DC REGULATED +5V
RESET
PFO
WDI
VOUT
GND
VBATT
VCC
PFI
R1
R2
O.1
F
3.6V
LITHIUM
BATTERY
MAX690A
MAX802L
P
RESET
__________Typical Operating Circuit
19-4333; Rev 4; 12/05
__________________General Description
The MAX690A/MAX692A/MAX802L/MAX802M/MAX805L
reduce the complexity and number of components
required for power-supply monitoring and battery-control
functions in microprocessor (P) systems. They signifi-
cantly improve system reliability and accuracy compared
to separate ICs or discrete components.
These parts provide four functions:
1) A reset output during power-up, power-down, and
brownout conditions.
2) Battery-backup switching for CMOS RAM, CMOS
P, or other low-power logic.
3) A reset pulse if the optional watchdog timer has not
been toggled within 1.6sec.
4) A 1.25V threshold detector for power-fail warning or
low-battery detection, or to monitor a power supply
other than +5V.
The parts differ in their reset-voltage threshold levels
and reset outputs. The MAX690A/MAX802L/MAX805L
generate a reset pulse when the supply voltage drops
below 4.65V, and the MAX692A/MAX802M generate a
reset below 4.40V. The MAX802L/MAX802M guaran-
tee power-fail accuracies to ±2%. The MAX805L is the
same as the MAX690A except that RESET is provided
instead of RESET.
All parts are available in 8-pin DIP and SO packages.
The MAX690A/MAX802L are pin compatible with the
MAX690 and MAX694. The MAX692A/MAX802M are
pin compatible with the MAX692.
_______________________Applications
Battery-Powered Computers and Controllers
Intelligent Instruments
Automotive Systems
Critical P Power Monitoring
___________________________Features
Precision Supply-Voltage Monitor:
4.65V for MAX690A/MAX802L/MAX805L
4.40V for MAX692A/MAX802M
Reset Time Delay – 200ms
Watchdog Timer – 1.6sec Timeout
Battery-Backup Power Switching
200A Quiescent Supply Current
50nA Quiescent Supply Current in Battery-
Backup Mode
Voltage Monitor for Power-Fail or Low-Battery
Warning
Power-Fail Accuracy Guaranteed to ±2%
(MAX802L/M)
Guaranteed R
RE
ES
SE
ET
T Assertion to V
CC = 1V
8-Pin SO and DIP Packages
______________Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
MAX690ACPA
8 Plastic DIP
MAX690ACSA
0°C to +70°C
8 SO
MAX690AC/D
0°C to +70°C
Dice*
MAX690AEPA
-40°C to +85°C
8 Plastic DIP
MAX690AESA
-40°C to +85°C
8 SO
MAX690AMJA
-55°C to +125°C
8 CERDIP**
Ordering Information continued on last page.
* Dice are specified at TA = +25°C
**Contact factory for availability and processing to MIL-STD-883.
Devices in PDIP and SO packages are available in both leaded
and lead-free packaging. Specify lead free by adding the +
symbol at the end of the part number when ordering. Lead free
not available for CERDIP package.
0°C to +70°C
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.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX690AMJA 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
MAX690AMJA/883B 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
MAX690C/D 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
MAX690CPA 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
MAX690CPA+ 功能描述:監(jiān)控電路 MPU 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
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