|Category||Power Management => Supervisory Circuits => System Supervisors/Reset|
|Description||Low-power, Sc70/sot P Reset Circuits With Capacitor-adjustable Reset Timeout Delay|
|Company||Maxim Integrated Products|
|Datasheet||Download MAX6340UK__-T datasheet
|Cross ref.||Similar parts: TPS6734, MAX6340UK16-T, TPS6734, MAX6340UK18-T, TPS6735, MAX6340UK16-T, TPS6735, MAX6340UK17-T|
Low-Power, SC70/SOT µP Reset Circuits with Capacitor-Adjustable Reset Timeout Delay
The MAX6340/MAX6421MAX6426 low-power microprocessor supervisor circuits monitor system voltages from to 5V. These devices perform a single function: they assert a reset signal whenever the VCC supply voltage falls below its reset threshold. The reset output remains asserted for the reset timeout period after VCC rises above the reset threshold. The reset timeout is externally set by a capacitor to provide more flexibility. The MAX6421/MAX6424 have an active-low, pushpull reset output. The MAX6422 has an active-high, push-pull reset output and the MAX6340/MAX6423/ MAX6425/MAX6426 have an active-low, open-drain reset output. The MAX6421/MAX6422/MAX6423 are offered or SOT143 packages. The MAX6340/MAX6424/MAX6425/MAX6426 are available 5-pin SOT23-5 packages.Features
o Monitor System Voltages from 5V o Capacitor-Adjustable Reset Timeout Period o Low Quiescent Current (1.6µA typ) o Three RESET Output Options Push-Pull RESET Push-Pull RESET Open-Drain RESET o Guaranteed Reset Valid to VCC 1V o Immune to Short VCC Transients o Small 4-Pin SOT143, and 5-Pin SOT23 Packages o MAX6340 Pin Compatible with o MAX6424/MAX6425 Pin Compatible with MC33464/MC33465, S807/S808/S809, and o MAX6426 Pin Compatible with PST92XXApplications
Portable Equipment Battery-Powered Computers/Controllers Automotive Medical Equipment Intelligent Instruments Embedded Controllers Critical µP Monitoring Set-Top Boxes Computers
Note: The MAX6340/MAX6421MAX6426 are available with factory-trimmed reset thresholds from 5.0V in approximately 0.1V increments. Insert the desired nominal reset threshold suffix (from Table 1) into the blanks. There are 50 standard versions with a required order increment of 2500 pieces. Sample stock is generally held on standard versions only (see Standard Versions Table). Required order increment is 10,000 pieces for nonstandard versions. Contact factory for availability. All devices are available in tape-and-reel only. Typical Operating Circuit appears at end of data sheet. Selector Guide appears at end of data sheet. 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
All Voltages Referenced to GND to +6.0V SRT, RESET, RESET (push-pull).................-0.3V to (VCC + 0.3V) RESET (open to +6.0V Input Current (all pins)......................................................±20mA Output Current (RESET, RESET)......................................±20mA Continuous Power Dissipation (TA 4-Pin SC70 (derate 3.1mW/°C above 4-Pin SOT143 (derate 4mW/°C above 5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW Operating Temperature to +125°C Storage Temperature 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.
(VCC TA = TMIN to TMAX, unless otherwise specified. Typical values are at VCC = 5V and = +25°C.) (Note 1)
PARAMETER Supply Voltage Range Supply Current SYMBOL VCC 5.0V ICC VCC 3.3V VCC 2.0V VCC Reset Threshold Accuracy Hysteresis VCC to Reset Delay Reset Timeout Period VSRT Ramp Current VSRT Ramp Threshold RAMP Threshold Hysteresis RESET Output Voltage Low VOL VTH VHYST tRD tRP IRAMP VTH-RAMP VCC falling at 1mV/µs CSRT = 1500pF CSRT = 0 VSRT to 0.65V; VCC to 5V VCC to 5V (VRAMP rising) VRAMP falling threshold VCC 1.0V, ISINK = 50µA VCC 2.7V, ISINK = 1.2mA VCC 4.5V, ISINK = 3.2mA RESET Output Voltage High, Push-Pull RESET Output Leakage Current, Open-Drain VCC 1.8V, ISOURCE = 200µA VOH VCC 2.25V, ISOURCE = 500µA VCC 4.5V, ISOURCE = 800µA ILKG VCC > VTH, reset not asserted VCC 1.0V, ISOURCE = 1µA RESET Output Voltage High VOH VCC 1.8V, ISOURCE = 150µA VCC 2.7V, ISOURCE = 500µA VCC 4.5V, ISOURCE = 800µA VCC 1.8V, ISINK = 500µA RESET Output Voltage Low VOL VCC 2.7V, ISINK = 1.2mA VCC 4.5V, ISINK 0.8 x VCC 0.8 x VCC 0.8 x VCC 0.8 x VCC 0.8 x VCC 0.8 x VCC 0.8 x VCC to +125°C VTH - 1.5% VTH V 5.75 CONDITIONS MIN TYP MAX VTH + 1.5% VTH mV µA UNITS VNote 1: Devices production tested at +25°C. Overtemperature limits are guaranteed by design.
MAXIMUM TRANSIENT DURATION vs. RESET THRESHOLD OVERDRIVE
175 150 TRANSIENT DURATION (µs) VTH 2.95V 0 RESET OCCURS ABOVE THE CURVE
|Some Part number from the same manufacture Maxim Integrated Products|
|MAX6341 1ppm/ C, Low-Noise, +2.5V/+4.096V/+5V Voltage References|
|MAX6342 6-Pin P Reset Circuit With Power-fail Comparator|
|MAX6342thruMAX6345 6-pin up Reset Circuit With Power-fail Comparator|
|MAX6342TUT-T 6-Pin P Reset Circuit With Power-fail Comparator|
|MAX6346 3-Pin, Ultra-low-power SC70/SOT P Reset Circuits|
|MAX6346UR__-T 3-pin, Ultra-low-power Sc70/sot Reset Circuits|
|MAX6347 3-Pin, Ultra-low-power SC70/SOT P Reset Circuits|
DG381AK : General Purpose CMOS Analog Switches
MAX365C/D : Precision, Quad, SPST Analog Switches
MAX4200THRUMAX4205 : Ultra-high-speed, Low-noise, Low-power, Sot-23, Open-loop Buffer With 75 Ohm Output Termination
MAX16023PTAR12+ : Battery-Backup Circuits With Regulated Output Voltage The MAX16023/MAX16024 low-power battery-backup circuits with a regulated output are capable of delivering up to 100mA output current. The MAX16023/MAX16024 include a low-dropout regulator, a microprocessor (µP) reset circuit, and a battery switc
ISL12058IRTZ-T : Low Cost And Low Power I2C-Bus™ Real Time Clock/Calendar Low Power And Low Cost RTC With Alarm Function The ISL12058 device is a low power real time clock with clock/calendar, and alarm function. The oscillator uses an external, low-cost 32.768kHz crystal. The real time clock tracks time with se
MAX5433META+ : 32-tap, Nonvolatile, I2C, Linear, Digital Potentiometers
MAX6386XS46D2-T : Sc70, Single/dual Low-voltage, Low-power ¥ìP Reset Circuits
73M1903C-IM/F : Data Acquisition - Analog Front End (afe) Integrated Circuit (ics) Tube 3 V ~ 3.6 V; IC MODEM AFE MULTIREGIONAL 32QFN Specifications: Package / Case: 32-VFQFN Exposed Pad ; Voltage - Supply, Digital: 3 V ~ 3.6 V ; Voltage - Supply, Analog: 3 V ~ 3.6 V ; Number of Bits: - ; Number of Channels: 2 ; Packaging: Tube ; Power (Watts): - ; Lead Free Status: Lead Free ; RoHS Status: RoHS Compliant
DS1848B-C50+T&R : Data Acquisition - Digital Potentiometer Integrated Circuit (ics) Non-Volatile Tape & Reel (TR) 3 V ~ 5.5 V; IC RES.MEM TEMP 50/10K 16CSBGA Specifications: Number of Circuits: 2 ; Resistance (Ohms): 10K, 50K ; Interface: I²C (Device Address) ; Taps: 256 ; Package / Case: 16-LBGA, CSPBGA ; Packaging: Tape & Reel (TR) ; Voltage - Supply: 3 V ~ 5.5 V ; Memory Type: Non-Volatile ; Temperature Coefficient: 850 ppm/°C Typical ; O
MAX3349EAEBE+T : LINE TRANSCEIVER, PBGA16 Specifications: Technology: BICMOS ; Device Type: Transceiver ; Supply Voltage: 1.8V, Other, 2.75 ; Operating Temperature: -40 to 85 C (-40 to 185 F) ; Package Type: UCSP, 2 X 2 MM, LEAD FREE, UCSP-16 ; Pins: 16 ; Features: RoHS
MAX4606CPE : QUAD 1-CHANNEL, SGL POLE SGL THROW SWITCH, PDSO16 Specifications: Applications: Commercial ; Supply Voltage (VS): -15 to 20 volts ; Ron: 4 ohms ; VISO: 62 dB ; &nb916;RON: 0.2000 ohms ; Operating Temperature: 0.0 to 70 C (32 to 158 F) ; Package Type: SSOP, 5.30 X 0.65 MM, SSOP-16 ; Number of Pins: 16 ; Number of Devices: 4
MAX9172ESA+T : DUAL LINE RECEIVER, PDSO8 Specifications: Technology: CMOS ; Device Type: Receiver ; Supply Voltage: 3.3V ; Operating Temperature: -40 to 85 C (-40 to 185 F) ; Package Type: SOIC, MS-012AA, SOIC-8 ; Pins: 8 ; Features: RoHS
5962-8951105EA : Voltage Mode. ti UC1525B, Regulating Pulse Width Modulators. The UC1525B/1527B series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when 5.1V Buried Zener Reference used in designing all types of switching power supplies. The on-chip +5.1V Trimmed to ±0.75% buried zener reference is trimmed to ±0.75% and the input common-mode range to 500kHz.
BP2101-7R : 120195 Watt DC-DC Converters. Input voltage to 4 isolated outputs 4242V DC I/O electric strength test voltage Extremely slim case (4 TE), fully enclosed Extremely low inrush current, hot swappable Operating ambient temperature range 4071°C with convection cooling Output 1 Output 2 Output 3 Output 4 Uo nom Po nom Po max Uo nom Po nom Po max Uo nom Po nom Po max Uo nom Po nom Po max [V DC] [W] [V DC] [W] [V DC] [W] [V DC] [W] Type.
EZ1084 : 5.0 Amp Positive Voltage Regulator. The EZ1084 series of high performance positive voltage regulators are designed for use in applications requiring low dropout performance to 5A. Additionally, the EZ1084 series provides excellent regulation over variations in line, load and temperature. Outstanding include low dropout performance at rated current, fast transient response, internal current.
MC33466H-30JT1 : Converters. Fixed Frequency PWM Micropower Dc-to-dc Converter , Package: SOT-89, Pins=3.
MM1377 : Voltage And Current Control(dual Op-amp And Shunt Regulator)(quad Op-amp And Shunt Regulator).
MTD1120F : . Constant-current chopping function (Off time fixed, self-oscillation) 4-phase input (with inhibit for simultaneously turn ON) Built-in flywheel diodes Absolute Maximum Ratings (Ta=25) Item Symbol VCEO(SUS) Output Voltage IO Output Current VCC Logic@Supply@Voltage VIN Logic@Input@Voltage PT Total Power Dissipation Tj Junction Temperature Tstg Storage.
NPH25S2403I : ISOlated 25W Single Output DC/DC Converters.
PT4833A : Plug-in Power Solutions->Isolated->Multiple Output. ti PT4833, 3.3V/2V/1.5V 12A, 48-V Input ISOlated DC/DC Converter.
RT9181 : Single Output. Iout(mA) = 150 ;; IGND1( GA) = 160 ;; Output Voltage(V) = 1.2, 1.8 ;; Vin (Min) = 3 ;; Vin (Max) = 5.5 ;; Accuracy(%) = 1.5 ;; / 2 = Shdn/pok ;; Packages = SOT-25 ;;.
ZXRD1050NQ16 : High Efficiency Simplesync PWM DC-DC Controllers. The ZXRD1000 series provides complete control and protection functions for a high efficiency 95%) DC-DC converter solution. The choice of external MOSFETs allow the designer to size devices according to application. The ZXRD1000 series uses advanced DC-DC converter techniques to provide synchronous drive capability, using innovative circuits that allow.
ADM1178 : The ADM1178 is an integrated hotswap controller and current sense amplifier that offers digital current and voltage monitoring via an on-chip 12-bit ADC, communicated through an I2C interface. An internal current sense amplifier senses voltage across the sense resistor in the power path via the VCC and SENSE pins. The ADM1178 limits the current through.
LTC2932HF#TRPBF : Congurable Six Supply Monitor With Adjustable Reset Timer And Supply Tolerance The LTC2932 is a congurable supply monitor for systems with up to six supply voltages. One of 16 preset or adjustable voltage monitor combinations can be selected using an external resistive divider connected to the mode select pin. The preset voltage thresholds are digitally.
AAT3195 : 4-Channel Charge-Pump LED Driver The AAT3195 is a charge-pump based, current-sink white LED driver capable of driving one to four LEDs up to 30mA, each. It automatically switches between 1x mode and 2x mode to maintain the highest efficiency and optimal LED current accuracy and matching. The AAT3195 charge pump’s 1x mode (bypass mode) has very low resistance.
NCP4620 : 150 MA Low Dropout, Wide Voltage Input Linear Voltage Regulator The NCP4620 is a 150mA CMOS Low Dropout Linear Voltage Regulator with an input voltage range of 1.4V to 10V and a 12V max input voltage. The device has excellent output accuracy at 1% with a low temperature coefficient of ±80ppm/°C. Safety of the device included fold-back protection and thermal.