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MAX692CPAMAXN/a150avaiMicroprocessor Supervisory Circuits
MAX692EJAMAXN/a12avaiMicroprocessor Supervisory Circuits
MAX692EPAMAXIMN/a1000avaiMicroprocessor Supervisory Circuits
MAX692EPAMAXIM ?N/a110avaiMicroprocessor Supervisory Circuits
MAX692MJAMAXIMN/a2596avaiMicroprocessor Supervisory Circuits
MAX694CPAMAXIM ?N/a231avaiMicroprocessor Supervisory Circuits
MAX694CPAMAXIMN/a200avaiMicroprocessor Supervisory Circuits
MAX694CPAMAXN/a22avaiMicroprocessor Supervisory Circuits
MAX694EPAMAXIMN/a15avaiMicroprocessor Supervisory Circuits
MAX694EPAMAXIM ?N/a39avaiMicroprocessor Supervisory Circuits
MAX694MJAMAXN/a490avaiMicroprocessor Supervisory Circuits
MAX695CPEMAXIM ?N/a70avaiMicroprocessor Supervisory Circuits
MAX695EPEMAXN/a252avaiMicroprocessor Supervisory Circuits
MAX695EWEMAXIM ?N/a12avaiMicroprocessor Supervisory Circuits


MAX692MJA ,Microprocessor Supervisory CircuitsGeneral Description The MAX690 Family of supervisory circuits reduce the complexity and number ..
MAX692MJA/883B ,Microprocessor Supervisory CircuitsApplicationsthan +5V.● ComputersThe MAX691, MAX693, and MAX695 are supplied in 16-pin ● Controllers ..
MAX693 ,Microprocessor Supervisory CircuitsElectrical CharacteristicsV = full operating range, V = 2.8V, T = +25°C, unless otherwise noted.)CC ..
MAX6931AUI ,20-Output, 76V, Serial-Interfaced VFD Tube DriversApplicationsWhite Goods Industrial WeighingGaming Machines Security +5V+60VC2C1Automotive Telecom10 ..
MAX693ACPE ,Microprocessor Supervisory CircuitsFeaturesThe MAX691A/MAX693A/MAX800L/MAX800M micro-' 200ms Power-OK/Reset Timeout Periodprocessor (µ ..
MAX693ACSE ,Microprocessor Supervisory CircuitsMAX691A/MAX693A/MAX800L/MAX800M19-0094; Rev 7a; 12/96Microprocessor Supervisory Circuits___________ ..
MB3883 ,6-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-downApplications6-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-downMB3 ..
MB3883 ,6-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-downApplications6-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-downMB3 ..
MB3883 ,6-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-downFUJITSU SEMICONDUCTORDS04-27225-2EDATA SHEETASSP For Power Management
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MB3883PV ,6-ch DC/DC Converter IC With Synchronous Rectification for voltage step-up and step-downFUJITSU SEMICONDUCTORDS04-27225-2EDATA SHEETASSP For Power Management
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MAX692CPA-MAX692EJA-MAX692EPA-MAX692MJA-MAX694CPA-MAX694EPA-MAX694MJA-MAX695CPE-MAX695EPE-MAX695EWE
Microprocessor Supervisory Circuits
19-0218. Rev P, 4/95
- - General Description
The MAX690 Family of supervisory circuits reduce the
complexity and number of components required for
power supply monitoring and battery control functions in
microprocessor systems. These include pP reset and
backup-battery switchover, watchdog timer, CMOS
RAM write protection, and power-failure warning. The
MAX690 Family significantly improves system reliability
and accuracy compared to that obtainable with separate
le or discrete components.
The MAX690, MAX692 and MAX694 are supplied in
8-pin packages and provide four functions:
1) A Reset output during power-up, power-down and
brownout conditions.
2) Battery backup switching for CMOS RAM, CMOS
microprocessor or other low power logic.
3) A Reset pulse if the optional watchdog timer has not
been toggled within a specified time.
4) A 1.3V threshold detector for power fail warning, low
battery detection, or to monitor a power supply other
than +5V.
The MAX691, MAX693 and MAX695 are supplied in
16-pin packages and perform all MAX690/692/694
functions, plus:
1) Write protection of CMOS RAM or EEPROM.
2) Adjustable reset and watchdog timeout periods.
3) Separate outputs for indicating a watchdog timeout,
backup-battery switchover, and low Vcc.
_----------------- Applications
Computers
Controllers
Intelligent Instruments
Automotive Systems
Critical pp Power Monitoring
- Pin Configuration
24flAl21'l] 'fi'C (l AM]
Microprocessor
Supervisory Circuits
Features
. Precision Voltage Monltor
4.65V In MAX690, MAX691, MAX694 and MAX695
4.4OV in MAX692 and MAX693
. Power OKIReset Time Delay - 50, 200ms, or
adjustable
Watchdog Timer - 100ms, 1.6 see, or
adjustable
. Minimum Component Count
. 111A Standby Current
. Battery Backup Power Switching
. Onboard Gating of Chip Enable Signals
. Voltage Monitor for Power Fall or Low Battery
Warnlng
_______ Ordering Information
PART £MP_.RANGVE_ _ _errery1titFiij
MAX690CPA (Y'C to +7000 8 Lead Plastic DIP
MAX690C/D ovc to ma - DICE" -
MAX690EPA T4Fclrs-c 8 Lead Plastic DIP
MAX690EJA -40°C to +85°C_ 8 Lead CERDIP
WéMA -55°c£125°0_ CtLyTdEeCryCr,
MAX691CPE _ crc to +700 16 Lead Plastic DIP _
MAX691CWE 0°C to 4 70°C 16 Load Wide so
w-arid/b' 0-0 to Ffir" Tam ---
MAX691EPE -40°c to +85% iLcEgPIainp DIP
7i/(xTs9TErTE tlol to +stc— 16 L310 Wlde sfo"
MAXGQIEJE -urc to +856; -u, Lead CERDIP
_M:‘&91WE_ 65°C to +125_‘C_ _1Er-cracic_EF_TlP,
Ordering Information continued on last page
"Contact factory for dice specifications
Typical Operating Circuit
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PFI I: PFO VMTT
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am on E MAX693 1% our A-
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MAXSQO/Q 1/92/93/94/95
Microprocessor
Supervisory Circuits
ABSOLUTE MAXIMUM RATINGS
Terminal Voltage (with respect to GND)
tr, ............................. --0. 3V to 6.0V
........................... -0. 3V to 6. 0V
All AOther Inputs (Note I). - 0.3V to (Vow +0. 5V)
Input Current
Vcc ................................... 200mA
VBATI’ ................................... 50mA
GND .................................... 20mA
Output Current
Vou ...................... short circuit protected
All Other Outputs ......................... 20mA
Rate- of-Rise, ng-r. Vcc ................. 100V/pS
Operating Temperature Range
C suf fix .......................... 0°C to +70°C
E suffix ....................... -4ty'C to +85''C
M suffix ..................... -55''C to +125''C
Power Dissipation
8 Pin Plastic DIP
(Derate 5mW/''C above +70°C) .......... 400mW
8 Pin CERDIP
(Derate 8mW/''C above +85°C) .......... 500mW
16 Pin Plastic DIP
(Derate 7mW/''C above + 70°C) .......... 600mW
16 Pin Small Outline
(Derate 7mW/''C above +70''C) .......... 600mW
16 Pin CERDIP
(Derate 10mW/''C above +85''C) ......... 600mW
Storage Temperature Range ..... .-650C to +160°C
Lead Temperature (Soldering, 10 seconds) . . . . 300''C
Stresses above those listed under' Absolute Maximum Ratings" may cause per.rpap.ent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions above those indicated in the operational sections of the specifications Is not implied. Exposure to
absolute maximum ratings conditions for extended periods may affect device reliability
ELECTRICAL CHARACTERISTICS
(Vcc ' full operating range,VBArr-- _ 2.8V TA--- - 250, unless otherwise noted.)
PARAMETER [ CONDITIONS 1 MIN - TYP MAX TLit-iris-)
BATTERY BACKUP SWITCHING
Operating Voltage Range
MAX690, MAX691, MAX694, MAX695 Vcc 4.75 5.5
MAX690, MAX691, MAX694, MAX695 VBMT 2.0 4.25 V
MAX692, MAX693 Vcc 4.5 5.5
MAX692, MAX693 VBAn 2.0 4.0
-- ”~‘i
‘OUT = 1mA Vcc-O, 3 Vcc- 0.1
Vour Output Voltage iour = 50m A Vcc - o. 5 L_cc- o, 25 V
V Bane Back Mode Gl, : 250 A, V V v-0QV V r- _1 V - V
OUL'E ry ._._‘.‘B__________+_l‘_‘__:_c£__““____ -ir-1"-AT'-' -01-e"i-0-12---s- _ I__#
OUT - 1m
Supply Current (excludes tour) IOUT = 50 m A 3.5 10 mA
LSupply Current in Battery Backup Mode Vcc = OV, Kmrr = 2.8V 0.6 1 PA
5.5V > Vcc > VBATT41V
Battery Standby Current T, = 25°C - 0.1 I002 pA
H = Discharge, - = Charge) TA = Full Operating Range -1.0 +0.02
Battery Switchover Threshold Power Up 70 mV
Vcc - VBATT Power Down 50
Battery Switchover Hysteresis 20 mV
BATT ON Output Voltage ISlNK = 3. mm 0.4 r v j
BATT ON Output Short BATT ON: Vout - 4.5V Sink Current 25 l mA
Circuit Current BATT ON= 0V Source Current 0.5 1 25 PA
TETiFr' AND WATCHDOG TIMER
TA = Fuil Operating Range
Reset Voltage Threshold MAX690, MAX691, MAX694, MAX695 4.5 4.65 4.75 V
L__ MAX692, MAX693 4.25 4.4 4.5 V
Note 1: The input voltage limits on PFI and wry may be exceeded provided the input current is limited to less than 10mA.
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