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Technical content
Features
Monitor Supply Voltages of ±2% Reset Thresh- old Accuracy Internal Set Reset Timeout Period 200ms (TYP) Manual RESET Input (MR ) Low Quiescent Current : 15µA at VCC=3.3V Available in three RESET Output Options Push-Pull RESET Output (G686L) Push-Pull RESET Output (G686H) Open-Drain RESET (G687L) Guaranteed Reset Valid to VCC = 1V Power-Supply Transient Immunity SOT-23-5 Package
Applications
Computers Controllers Intelligent Instruments Critical µP and µC Power Monitoring Portable/Battery-Powered Equipment Telecom/Networking Equipment General Description The G686/G687 microprocessor ( µP) supervisory circuits monitor system voltages in µP and digital systems. They provide excellent circuit reliability at low cost by eliminating external components. Since the sense pin is separated from power supply, it allows the IC to monitor added power supply. Using the IC with the sense pin separated from power sup- ply enables output to maintain the state of detection even when voltage of the monitored power supply drops to 0V. The VSEN pin is high impedance and can be used for application of reset threshold pro- gramming. Moreover, with the built-in reset timeout delay about 800ms, enables the IC remains asserts after the VSEN has risen above reset threshold or manual reset is deasserted. The G686/G687 is available in SOT-23-5 packages.
Ordering Information
NUMBER MARKING TEMP. RANGE OUTPUT TYPE PACKAGE (Green) G686LT11U 68FLx -40 °C ~ +105°C Push-Pull Active Low SOT-23-5 G686HT11U 68FHx -40 °C ~ +105°C Push-Pull Active High SOT-23-5 G687LT11U 68GLx -40 °C ~ +105°C Open Drain SOT-23-5 Note: T1: SOT-23-5 1: Bonding Code U: Tape Reel Pin Configuration Typical Application Circuit SOT-23-5 G686/G687 ()is for G686H *The 100kΩ pull up resistor is only for G687L RESET (RESET) GND MR 43VCC VCC VSEN GND RESET (RESET) * 100kΩ Manual Reset MR Detect Voltage **Adjustable reset threshold voltage is V th = 0.994 × R1+R2 VSEN ICC may increased at high TA, Therefore, can not connect Resistors to VCC to prevent Icc abnormal behavior at high T A. SOT-23-5 G686/G687 ()is for G686H *The 100kΩ pull up resistor is only for G687L RESET (RESET) GND MR 43VCC VCC VSEN GND RESET (RESET) * 100kΩ Manual Reset MR Detect Voltage **Adjustable reset threshold voltage is V th = 0.994 × R1+R2 R1+R2 VSEN ICC may increased at high TA, Therefore, can not connect Resistors to VCC to prevent Icc abnormal behavior at high T A.