MAX6709EUB+T ,Low-Voltage, High-Accuracy, Quad Voltage Monitors in µMAX PackageFeaturesThe MAX6709/MAX6714 quad voltage monitors provide♦ Monitor Four Power-Supply Voltagesaccura ..
MAX6709FUB ,35 mA, 2.0 V to 5.5 V, low-voltage, high-accuracy, quad voltage monitorELECTRICAL CHARACTERISTICS (MAX6709)(V = 2.0V to 5.5V, T = -40°C to +85°C, unless otherwise noted. ..
MAX6709FUB+ ,Low-Voltage, High-Accuracy, Quad Voltage Monitors in µMAX Packageapplications.♦ Adjustable Voltage Threshold Monitors Down toThe selection includes input options fo ..
MAX6709IUB ,35 mA, 2.0 V to 5.5 V, low-voltage, high-accuracy, quad voltage monitorapplications. Adjustable Voltage Threshold Monitors Down toThe selection includes input options fo ..
MAX6709IUB+ ,Low-Voltage, High-Accuracy, Quad Voltage Monitors in µMAX PackageMAX6709/MAX671419-2379; Rev 1; 12/05Low-Voltage, High-Accuracy, Quad VoltageMonitors in µMAX Packag ..
MAX6709IUB+T ,Low-Voltage, High-Accuracy, Quad Voltage Monitors in µMAX Packageapplications.♦ Adjustable Voltage Threshold Monitors Down toThe selection includes input options fo ..
MB3775 ,SWITCHING REGULATOR CONTROLLERFUJITSU SEMICONDUCTORDS04-27204-3EDATA SHEETASSPSWITCHING REGULATOR CONTROLLERMB3775LOW VOLTAGE DUA ..
MB3775PF , SWITCHING REGULATOR CONTROLLER
MB3776 ,Switching Regulator ControllerFEATURES• Wide supply voltage range: (2 V to 15 V)• Wide oscillation frequency range, high-frequenc ..
MB3776A ,Switching Regulator ControllerFUJITSU SEMICONDUCTORDS04-27201-3EDATA SHEETASSP For Power Supply
MB3776AP ,Switching Regulator ControllerFEATURES• Wide supply voltage range: (2 V to 15 V)• Wide oscillation frequency range, high-frequenc ..
MB3776APF ,Switching Regulator ControllerFUJITSU SEMICONDUCTORDS04-27201-3EDATA SHEETASSP For Power Supply
MAX6709BUB+-MAX6709DUB+-MAX6709EUB+-MAX6709EUB+T-MAX6709FUB+-MAX6709IUB+-MAX6709IUB+T-MAX6709MUB+-MAX6709OUB+-MAX6714AUB+-MAX6714CUB+-MAX6714CUB+T-MAX6714CUB-T -MAX6714DUB+-MAX6714DUB+T
Low-Voltage, High-Accuracy, Quad Voltage Monitors in µMAX Package
General DescriptionThe MAX6709/MAX6714 quad voltage monitors provide
accurate monitoring of up to four supplies without any
external components. A variety of factory-trimmed thresh-
old voltages and supply tolerances are available to opti-
mize the MAX6709/MAX6714 for specific applications.
The selection includes input options for monitoring 5.0V,
3.3V, 3.0V, 2.5V, and 1.8V voltages. Additional high-input-
impedance comparator options can be used as
adjustable voltage monitors, general-purpose compara-
tors, or digital-level translators.
The MAX6709 provides four independent open-drain
outputs with 10µA internal pullup to VCC. The MAX6714
provides an active-low, open-drain RESEToutput with
integrated reset timing and three power-fail comparator
outputs.
Each of the monitored voltages is available with trip
thresholds to support power-supply tolerances of either
5% or 10% below the nominal voltage. An internal
bandgap reference ensures accurate trip thresholds
across the operating temperature range.
The MAX6709 consumes only 35µA (typ) of supply cur-
rent. The MAX6714 consumes only 60µA (typ) of supply
current. The MAX6709/MAX6714 operate with supply
voltages of 2.0V to 5.5V. An internal undervoltage lock-
out circuit forces all four digital outputs low when VCC
drops below the minimum operating voltage. The four
digital outputs have weak internal pullups to VCC,
accommodating wire-ORed connections. Each input
threshold voltage has an independent output. The
MAX6709/MAX6714 are available in a 10-pin µMAX
package and operate over the extended (-40°C to
+85°C) temperature range.
ApplicationsTelecommunications
Servers
High-End Printers
Desktop and Notebook Computers
Data Storage Equipment
Networking Equipment
Multivoltage Systems
FeaturesMonitor Four Power-Supply VoltagesPrecision Factory-Set Threshold Options for 5.0V,
3.3V, 3.0V, 2.5V, and 1.8V (Nominal) SuppliesAdjustable Voltage Threshold Monitors Down to
0.62VHigh-Accuracy (±2.0%) Adjustable Threshold
InputsLow Supply Current
MAX6709: 35µA
MAX6714: 60µAFour Independent, Active-Low, Open-Drain
Outputs with 10µA Internal Pullup to VCC140ms (min) Reset Timeout Period
(MAX6714 only)2.0V to 5.5V Supply Voltage RangeImmune to Supply TransientsFully Specified from -40°C to +85°CSmall 10-Pin µMAX Package
MAX6709/MAX6714
Low-Voltage, High-Accuracy, Quad Voltage
Monitors in µMAX Package
Ordering InformationVCC
PWRGD1
PWRGD2
PWRGD3IN4
IN3
IN2
IN1
MAX6709
μMAX
TOP VIEW
PWRGD4GND
Pin Configurations19-2379; Rev 1; 12/05
Pin Configurations continued at end of data sheet.
PARTTEMP RANGEPIN-PACKAGE
MAX6709_UB*-40°C to +85°C10 µMAX
MAX6714_UB*-40°C to +85°C10 µMAX
Typical Operating Circuits appear at end of data sheet.
Selector Guides appear at end of data sheet.*Insert the desired letter from the Selector Guide into the blank
to complete the part number.
Devices 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.
MAX6709/MAX6714
Low-Voltage, High-Accuracy, Quad Voltage
Monitors in µMAX Package
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS (MAX6709)(VCC= 2.0V to 5.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= 5V and TA= +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
All Pins to GND.........................................................-0.3V to +6V
Input/Output Current (all pins)............................................20mA
Continuous Power Dissipation (TA= +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C)..........444mW
Operating Temperature Range...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSSupply Voltage RangeVCC2.05.5V
VCC = 3V2550Supply CurrentICCVCC = 5V3565µA
VIN_ = input threshold voltage2540Input CurrentIIN_
VIN_ = 0 to 0.85V (for adjustable threshold)0.2
5.0V (-5%)4.504.634.75
5.0V (-10%)4.254.384.50
3.3V (-5%)3.003.083.15
3.3V (-10%)2.852.933.00
3.0V (-5%)2.702.782.85
3.0V (-10%)2.552.632.70
2.5V (-5%)2.252.322.38
2.5V (-10%)2.132.192.25
1.8V (-5%)1.621.671.71
Threshold VoltageVTHIN_ decreasing
1.8V (-10%)1.531.581.62
Adjustable ThresholdVTHIN_ decreasing0.6090.6230.635V
Threshold Voltage Temperature
CoefficientTCVTH60ppm/°C
Threshold HysteresisVHYST0.3 x VTH%
VIN_ falling at 10mV/µs from
VTH to (VTH - 50mV)30
Propagation DelaytPD
VIN_ rising at 10mV/µs from
VTH to (VTH + 50mV)5
VCC = 5V, ISINK = 2mA0.3
VCC = 2.5V, ISINK = 1.2mA0.3Output Low VoltageVOL
VCC = 1V, ISINK = 50µA (Note 2)0.3
Output High VoltageVOHVCC ≥ 2.0V, ISOURCE = 6µA (min), PWRGD_
unasserted0.8 x VCCV
Output High Source CurrentIOHVCC ≥ 2.0V, PWRGD_ unasserted10µA
MAX6709/MAX6714
Low-Voltage, High-Accuracy Quad, Voltage
Monitors in µMAX Package
ELECTRICAL CHARACTERISTICS (MAX6714)(VCC= 2.0V to 5.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= 5V and TA= +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSSupply Voltage RangeVCC2.05.5V
VCC = 3V6090Supply Current (Note 3)ICCVCC = 5V80105µA
Power-Fail Input CurrentIPFI_VPFI_ = 0 to 0.85V0.2µA
MAX6714B (-5%)4.504.634.75
MAX6714A (-10%)4.254.384.50
MAX6714D (-5%)3.003.083.15VCC Reset ThresholdVTHVCC decreasing
MAX6714C (-10%)2.852.933.00
Power-Fail Input ThresholdVPFIVPFI_ decreasing0.6090.6230.635V
Threshold HysteresisVHYSTVPFI_ increasing relative to VPFI_ decreasing0.3 x VTH%
Reset Timeout PeriodtRP140210280ms
Reset DelaytRDVCC falling at 10mV/µs from
(VTH + 100mV) to (VTH - 100mV)30µs
VPFI_ falling at 10mV/µs from VTH to
(VTH - 50mV)30
Power-Fail Propagation DelaytPFD
VCC falling at 10mV/µs from
(VTH + 100mV) to (VTH - 100mV)5
VIL0.3 x VCCMR Input VoltageVIH0.7 x VCCV
MR Minimum Input Pulse1µs
MR Glitch Rejection100ns
MR to RESET DelaytMRD200ns
MR Pullup ResistanceMR to VCC102050kΩ
VCC = 5V, ISINK = 2mA0.3
VCC = 2.5V, ISINK = 1.2mA0.3Output Low VoltageVOL
VCC = 1V, ISINK = 50µA (Note 2)0.3
Output High VoltageVOHVCC ≥ 2.0V, ISOURCE = 6mA (min), RESET,
PFO_ unasserted0.8 x VCCV
Output High Source CurrentIOHVCC ≥ 2.0V, RESET and PFO_ unasserted10µA
Note 1:100% production tested at TA= +25°C. Overtemperature limits guaranteed by design.
Note 2:Condition at VCC= 1V is guaranteed only from TA= 0°C to +70°C.
Note 3:Monitored voltage 5V/3.3V is also the device supply. In the typical condition, supply current splits as follows: 25µA for the
resistor-divider, and the rest for other circuitry.
MAX6709/MAX6714
Low-Voltage, High-Accuracy, Quad Voltage
Monitors in µMAX Package
Typical Operating Characteristics(VCC= 5V, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE (MAX6709)MAX6709/14 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
TA = +85°C
TA = +25°C
TA = -40°C
SUPPLY CURRENT
vs. SUPPLY VOLTAGE (MAX6714)MAX6709/14 toc02
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
TA = +85°C
TA = +25°C
TA = -40°C
NORMALIZED THRESHOLD ERROR
vs. SUPPLY VOLTAGE (MAX6709)MAX6709/14 toc03
SUPPLY VOLTAGE (V)
NORMALIZED THRESHOLD ERROR (%)
NORMALIZED TO VCC = 5V
NORMALIZED THRESHOLD
vs. TEMPERATURE (MAX6709)MAX6709/14 toc04
TEMPERATURE (°C)
NORMALIZED THRESHOLD 35-1510
NORMALIZED PFI_ THRESHOLD
vs. TEMPERATURE (MAX6714)
MAX6709/14 toc05
TEMPERATURE (°C)
NORMALIZED PFI_ THRESHOLD3510-15
VCC = 3V OR 5V
OUTPUT VOLTAGE LOW
vs. SINK CURRENTMAX6709/14 toc06
SINK CURRENT (mA)
OUTPUT VOLTAGE LOW (mV)86723451
TA = +85°C
TA = +25°C
TA = -40°C
MAXIMUM TRANSIENT DURATION
vs. VCC OVERDRIVE (MAX6714)MAX6709/14 toc07
VCC OVERDRIVE (mV)
MAXIMUM TRANSIENT DURATION (
RESET ASSERTS
ABOVE THIS LINE
MAXIMUM TRANSIENT DURATION
vs. PFI_ OVERDRIVE (MAX6714)MAX6709/14 toc08
PFI_ OVERDRIVE (mV)
MAXIMUM TRANSIENT DURATION (
PFO_ ASSERTS
ABOVE THIS LINE
RESET TIMEOUT PERIOD
vs. TEMPERATURE (MAX6714)MAX6709/14 toc09
TEMPERATURE (°C)
RESET TIMEOUT PERIOD (ms)3510-15
-4085
MAX6709/MAX6714
Low-Voltage, High-Accuracy Quad, Voltage
Monitors in µMAX Package
Typical Operating Characteristics (continued)(VCC= 5V, TA= +25°C, unless otherwise noted.)
PROPAGATION DELAY
(WITH 100mV OVERDRIVE)MAX6709/14 toc10
10μs/div
PWRGD_ (PFO_)
2V/div
IN_ (PFI_)
100mV/div
AC-COUPLED
PFO_ PULLUP AND PULLDOWN RESPONSE
(CPFO_ = 47pF)MAX6709/14 toc11
10μs/div
PFO_
2V/div
PFI_
50mV/div
AC-COUPLED
RESET TIMEOUT DELAYMAX6709/14 toc12
40ms/div
RESET
2V/div
2V/div
MAX6709/MAX6714
Low-Voltage, High-Accuracy, Quad Voltage
Monitors in µMAX Package
Pin Description
PIN
MAX6709MAX6714NAMEFUNCTIONIN1Input Voltage 1. See Selector Guide for monitored voltages.IN2Input Voltage 2. See Selector Guide for monitored voltages.IN3Input Voltage 3. See Selector Guide for monitored voltages.IN4Input Voltage 4. See Selector Guide for monitored voltages.GNDGroundPWRGD4Output 4. PWRGD4 asserts low when IN4 falls below its threshold voltage. PWRGD4 is open
drain with a 10µA internal pullup current source to VCC.PWRGD3Output 3. PWRGD3 asserts low when IN3 falls below its threshold voltage. PWRGD3 is open
drain with a 10µA internal pullup current source to VCC.PWRGD2Output 2. PWRGD2 asserts low when IN2 falls below its threshold voltage. PWRGD2 is open
drain with a 10µA internal pullup current source to VCC.PWRGD1Output 1. PWRGD1 asserts low when IN1 falls below its threshold voltage. PWRGD1 is open
drain with a 10µA internal pullup current source to VCC.10VCC
Power-Supply Input. Connect VCC to a 2.0V to 5.5V supply. An undervoltage lockout circuit
forces all PWRGD_ outputs low when VCC drops below the minimum operating voltage. VCC
is not a monitored voltage for the MAX6709. For the MAX6714, RESET asserts low when VCC
drops below its threshold.MRManual Reset Input. Force MR low to assert the RESET output. RESET remains asserted for
the reset timeout period after MR goes high. MR is internally pulled up to VCC.PFI1
Power-Fail Input 1. Input to noninverting input of the power-fail comparator. PFI1 is
compared to an internal 0.62V reference. Use an external resistor-divider network to adjust
the monitor threshold.PFI2
Power-Fail Input 2. Input to noninverting input of the power-fail comparator. PFI2 is
compared to an internal 0.62V reference. Use an external resistor-divider network to adjust
the monitor threshold.PFI3
Power-Fail Input 3. Input to noninverting input of the power-fail comparator. PFI3 is
compared to an internal 0.62V reference. Use an external resistor-divider network to adjust
the monitor threshold.PFO3Power-Fail Output 3. PFO3 is an active-low, open-drain output with a 10µA internal pullup to
VCC. PFO3 asserts low when PFI3 is below the selected threshold.PFO2Power-Fail Output 2. PFO2 is an active-low, open-drain output with a 10µA internal pullup to
VCC. PFO2 asserts low when PFI2 is below the selected threshold.PFO1Power-Fail Output 1. PFO1 is an active-low, open-drain output with a 10µA internal pullup to
VCC. PFO1 asserts low when PFI1 is below the selected threshold.RESET
Reset Output. RESET is an active-low, open-drain output that asserts low when VCC drops
below its preset threshold voltage or when a manual reset is initiated. RESET remains low for
the reset timeout period after VCC exceeds the selected reset threshold or MR is released.
Detailed DescriptionThe MAX6709/MAX6714 are low-power, quad voltage
monitors designed for multivoltage systems. Preset
voltage options for 5.0V, 3.3V, 3.0V, 2.5V, and 1.8V
make these quad monitors ideal for applications such
as telecommunications, desktop and notebook comput-
ers, high-end printers, data storage equipment, and
networking equipment.
The MAX6709/MAX6714 have an internally trimmed
threshold that minimizes or eliminates the need for
external components. The four open-drain outputs have
weak (10µA) internal pullups to VCC, allowing them to
interface easily with other logic devices. The weak inter-
nal pullups can be overdriven by external pullups to any
voltage from 0 to 5.5V. Internal circuitry prevents current
flow from the external pullup voltage to VCC. The out-
puts can be wire-ORed for a single power-good signal.
The MAX6709 quad voltage monitor includes an accu-
rate reference, four precision comparators, and a
series of internally trimmed resistor-divider networks to
set the factory-fixed threshold options. The resistor net-
works scale the specified IN_ reset voltages to match
the internal reference/comparator voltage. Adjustable
threshold options bypass the internal resistor networks
and connect directly to one of the comparator inputs
(an external resistor-divider network is required for
threshold matching). The MAX6709 monitors power
supplies with either 5% or 10% tolerance specifica-
tions, depending on the selected version. Additional
high-input-impedance comparator options can be used
MAX6709/MAX6714
Low-Voltage, High-Accuracy Quad, Voltage
Monitors in µMAX Package UNDERVOLTAGE
LOCKOUT
0.62V
REFERENCE
PWRGD3
IN4
(ADJ)
IN3
(2.5V/1.8V)
IN2
(3.3V/3.0V)
IN1
(ADJ)
VCC
MAX6709
PWRGD4
PWRGD2
PWRGD1
VCC
VCC
VCC
VCC
Figure 1. MAX6709 Functional Diagram
