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Part: MAX6700
Category:
Power Management
-> Supervisory Circuits
-> Microprocessor Supervisors
Description: Low-Voltage, High-Accuracy, Triple/quad Voltage P Supervisory Circuits in Sot Package
Company: Maxim Integrated Products
Datasheet: Download MAX6700 datasheet File size : 318 kB
Request For quote: Find where to buy MAX6700
Datasheet text preview:
19-2324; Rev 1; 4/02
Low-Voltage, High-Accuracy, Triple/Quad Voltage µP Supervisory Circuits in SOT Package
General Description
The MAX6700/MAX6710 precision triple/quad voltage microprocessor (µP) supervisory circuits monitor up to four system-supply voltages and assert a single reset if any supply voltage drops below its preset threshold. These devices significantly reduce system size and component count while improving reliability compared to separate ICs or discrete components. A variety of factory-trimmed threshold voltages are available to accommodate different supply voltages and tolerances with minimal external component requirements. The MAX6710 includes internally fixed options for monitoring 5.0V, 3.3V, 3.0V, 2.5V, and 1.8V supplies with -5% or -10% tolerances. The MAX6710 is also available with one to three adjustable threshold options to monitor voltages down to 0.62V. The MAX6700 monitors three voltages with adjustable thresholds down to 0.62V. A single active-low output asserts when any monitored input falls below its associated threshold. The open-drain output has a weak internal pullup (10µA) to IN2. For the MAX6710, reset remains low for the reset timeout period (140ms min) after all voltages rise above the selected threshold. The MAX6700 acts as a voltage detector with a propagation delay of 5µs after all monitored voltages exceed their thresholds. The output remains valid as long as either IN2 or IN2 input voltage remains above 1V (MAX6710) or VCC is above 2V (MAX6700/MAX6710Q). The MAX6700/MAX6710 are available in a small 6-pin SOT23 package and operate over the extended (-40°C to +85°C) temperature range.
Features
o Monitor Up to Four Power-Supply Voltages o Precision Factory-Set Reset Threshold Options for 5.0V, 3.3V, 3.0V, 2.5V, and 1.8V Supplies o Adjustable Voltage Threshold Monitors Down to 0.62V with 1.5% Accuracy o Low 35µA Supply Current o Open-Drain RESET Output with 10µA Internal Pullup o 5µs Propagation Delay (MAX6700) o 140ms (min) Reset Timeout Period (MAX6710) o RESET Valid to IN1 = 1V or IN2 = 1V o Immune to Short Monitored Supply Transients o Guaranteed from -40°C to +85°C o Small 6-Pin SOT23 Package
MAX6700/MAX6710
Ordering Information
PART MAX6700UT-T MAX6710_UT-T TEMP RANGE -40°C to +85°C -40°C to +85°C PIN-PACKAGE 6 SOT23-6 6 SOT23-6
Insert the desired suffix letter from the Selector Guide into the blank to complete the part number. There is a 2500 piece minimum order increment requirement on the SOT package. These devices are available in tape-and-reel only.
________________________Applications
Telecommunications High-End Printers Desktop and Notebook Computers Data Storage Equipment Networking Equipment Industrial Equipment Set-Top Boxes Servers/Workstations
Selector Guide with Top marks appears at end of data sheet. Pin Configuration appears at end of data sheet.
SUPPLIES TO BE MONITORED IN1 IN2 IN3 IN4 GND
Typical Operating Circuit
MAX6700 MAX6710
RESET µP
________________________________________________________________ Maxim Integrated Products
1
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.
Low-Voltage, High-Accuracy, Triple/Quad Voltage µP Supervisory Circuits in SOT Package MAX6700/MAX6710
ABSOLUTE MAXIMUM RATINGS
VCC, IN_, RESET to GND.........-0.3V to +6V Continuous RESET Current .......20mA Continuous Power Dissipation 6-Pin SOT23 (derate 8.7mW/°C above +70°C).........695.7mW 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
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.
ELECTRICAL CHARACTERISTICS
(VIN2 = 1V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VIN2 = 3.0V to 3.3V, TA = +25°C.) (Note 1)
PARAMETER Operating Voltage Range (Note 2) SYMBOL VCC VIN2 CONDITIONS MAX6700/MAX6710Q All others (Note 3) TA = 0oC to +85oC TA = -40oC to +85oC MIN 2.0 1.0 1.2 25 55 TYP MAX 5.5 5.5 5.5 40 115 µA 0.4 0.2 35 4.50 4.25 3.00 2.85 2.70 2.55 2.25 2.13 1.62 1.53 0.611 4.63 4.38 3.08 2.93 2.78 2.63 2.32 2.19 1.67 1.58 0.620 0.3 60 VIN falling at 10mV/µs from VTH to (VTH - 50mV) MAX6700 only MAX6710 only 140 30 5 200 280 50 4.75 4.50 3.15 3.00 2.85 2.70 2.38 2.25 1.71 1.62 0.629 V %VTH ppm/oC µs µs ms V V UNITS
IN_ = nominal input voltage (for 1.8V, 2.5V, and 5.0V supplies) IIN_ IN2 = nominal input voltage (for 3.0V and 3.3V supplies) (Note 4) VIN1 = 0 to 0.85V (for adjustable thresholds) VIN3, VIN4 = 0 to 0.85V (for adjustable thresholds) ICC MAX6700/MAX6710Q only, VCC = 5.5V 5V (-5%) 5V (-10%) 3.3V (-5%) 3.3V (-10%) Threshold Voltage VTH IN_ decreasing 3.0V (-5%) 3.0V (-10%) 2.5V (-5%) 2.5V (-10%) 1.8V (-5%) 1.8V (-10%) Adjustable Threshold Reset Threshold Hysteresis Reset Threshold Temperature Coefficient IN_ to Reset Delay Propagation Delay Reset Timeout Period VTH V HYST TCVTH tRD tPD tRP IN_ decreasing IN_ increasing relative to IN_ decreasing
Input Current
2
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Low-Voltage, High-Accuracy, Triple/Quad Voltage µP Supervisory Circuits in SOT Package
ELECTRICAL CHARACTERISTICS (continued)
(VIN2 = 1V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VIN2 = 3.0V to 3.3V, TA = +25°C.) (Note 1)
PARAMETER RESET Output Low SYMBOL VOL CONDITIONS VIN2, VCC = 5V, ISINK = 2mA VIN2, VCC = 2.5V, ISINK = 1.2mA VIN2 = 1.0V, ISINK = 50µA, TA = 0oC to +85oC VCC 2.0V, ISOURCE = 6µA, RESET deasserted (MAX6700/MAX6710Q) VOH VIN2 2.0V, ISOURCE = 6µA, RESET deasserted VIN2 2.0V, RESET deasserted 0.8 VCC V 0.8 VIN2 10 µA MIN TYP MAX 0.3 0.4 0.3 V UNITS
MAX6700/MAX6710
RESET Output High
RESET Output High Source Current
IOH
Note 1: Note 2: Note 3: Note 4:
100% production tested at TA = +25°C. Limits over temperature guaranteed by design. The devices are powered from IN2 or VCC (for MAX6700/MAX6710Q). The RESET output is guaranteed to be in the correct state for IN1 or IN2 down to 1V. Monitored IN2 voltage (3.3V, 3.0V) is also the device power supply. Supply current splits as follows: 25µA for the resistor divider (for the monitored voltage) and 30µA for other circuits.
Typical Operating Characteristics
(VIN2 = VCC = 3.0V, TA = +25°C)
NORMALIZED THRESHOLD ERROR vs. TEMPERATURE
MAX6700 toc02
IN2 INPUT CURRENT vs. TEMPERATURE
MAX6700 toc01
IN2 INPUT CURRENT vs. IN2 VOLTAGE
90 80 IN2 INPUT CURRENT (µA) 70 60 50 40 30 20 10 0 0.10 0.08 NORMALIZED THRESHOLD ERROR (%) 0.06 0.04 0.02 0 -0.02 -0.04 -0.06 -0.08 -0.10 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 IN2 VOLTAGE (V) -40
58 56 IN2 INPUT CURRENT (µA) 54 52 50 48 46 44 42 40 -40 -15 10 35 60 VIN2 = 3V VIN2 = 3.3V
VIN2 = 3.3V
VTH = 1.8V
85
-15
10
35
60
85
TEMPERATURE (°C)
TEMPERATURE (°C)
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3
MAX6700 toc03
60
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