|Category||Power Management => Battery Management|
|Description||Micromaster - System Supervisor With Power Supply Monitor, Watchdog And Battery Backup|
|Datasheet||Download TC70 datasheet
|TC70/71 MICROMASTERTM SYSTEM SUPERVISOR WITH POWER SUPPLY MONITOR, WATCHDOG AND BATTERY BACKUP
s Maximum Functional Integration: Precision Power Supply Monitor, Watchdog Timer, External RESET Override, Threshold Detector and Battery Backup Controller an 8-Pin Package Generates Power-on RESET and Guards Against Unstable Processor Operation Resulting from Power "Brown-out" Automatically Halts and Restarts an Out-ofControl Microprocessor Output Can be Wire-ORed, or Hooked to Manual RESET Pushbutton Switch Watchdog Disable Pin for Easier Prototyping (TC70) Voltage Monitor for Power Fail or Low Battery Warning (TC71) Available in 8-Pin Plastic DIP or 8-Pin SOIC Packages Cost Effective
The is a fully-integrated power supply monitor, watchdog and battery backup circuit in a space-saving 8-pin package. When power is initially applied, the TC70/71 holds the processor in its reset state for a minimum of 500msec after VCC is in tolerance to ensure stable system start-up. After start-up, processor sanity is monitored by the on-board watchdog circuit. The processor must provide periodic highto-low level transitions to the TC70/71 to verify proper execution. Should the processor fail to supply this signal within the specified timeout period, an out-of-control processor is indicated and the TC70/71 issues a momentary processor reset as a result. The TC70 also features a watchdog disable pin to facilitate system test and debug. The output of the TC70/71 can be wire-ORed to a pushbutton switch (or electronic signal) to reset the processor. When connected to a push-button switch, the TC70/71 provides contact debounce. The integrated battery backup circuit on-board the TC70/ 71 converts CMOS RAM into nonvolatile memory by first write-protecting, then switching the VCC line of the RAM over to an external battery. The TC71 incorporates an additional 1.3V threshold detector for power fail warning, low battery detection or to monitor power supply voltages other than +5V.TYPICAL APPLICATIONS
All Microprocessor-based Systems Test Equipment Instrumentation Set-Top Boxes
8-Pin SOIC 8-Pin Plastic DIP 8-Pin SOIC 8-Pin Plastic DIP 8-Pin SOIC 8-Pin Plastic DIP 8-Pin SOIC 8-Pin Plastic DIPMICROMASTERTM SYSTEM SUPERVISOR WITH POWER SUPPLY MONITOR, WATCHDOG AND BATTERY BACKUP
Voltage (Any Pin) with Respect to Ground................................ GND 0.3 to VCC + 0.3V Operating Temperature Range............... to +85°C Storage Temperature Range................ to +150°C Lead Temperature (Soldering, 10 sec)................. +300°C
*This is a stress rating 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 Rating Conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS: Recommended DC Operations: TA = TMIN to TMAX, unless otherwise specified.Supply Voltage Input HIGH Level Input HIGH Level Input LOW Level
Note 1 CEI, WDD (Note 1) RS (Note 1) CEI, WDD, RS (Note 1)
ELECTRICAL CHARACTERISTICS: DC: TA = TMIN to TMAX, VCC to 5.5V, unless otherwise specified.
Operating Current Operating Current in Battery Backup Mode Input Leakage Input Leakage Input Leakage Battery Standby Current Battery Standby Current
ELECTRICAL CHARACTERISTICS: DC: Power Supply Monitor, EXT. RESET and Watchdog: TA = TMIN to TMAX, VCC to 5.5V, unless otherwise specified.
Output Current 0.4V (RS, TDO, CEO, PF Pins) Output Current 2.4V (TDO, CEO, PF Pins) WDD Input Current RS Strobe (HIGH) Level RS Strobe (LOW) Level VCC Trip Point
ELECTRICAL CHARACTERISTICS: DC: Battery Backup and Threshold Detector: TA = TMIN to TMAX, VCC to 5.5V, unless otherwise specified.VCCO Output Voltage VOUT in Battery Backup Mode
ELECTRICAL CHARACTERISTICS: (Cont.) DC: Battery Backup and Threshold Detector: TA = TMIN to TMAX, VCC to 5.5V, unless otherwise specified.IOUT1 IOUT2 VSW VHYST VOHCEO VTDI ITDI VTDI (HYST)
VCCO Output Current VCCO Output Current in Battery Backup Mode Battery Switchover Threshold (VCC Falling) Battery Switchover Hysteresis CEO Output Voltage in Battery Backup Mode Threshold Detector Trip Voltage Threshold Detector Input Current Threshold Detector Hysteresis
ELECTRICAL CHARACTERISTICS: AC: Power Supply Monitor, EXT. RESET and Watchdog: TA = TMIN to TMAX, VCC to 5.5V, unless otherwisePB Hold Time Reset Active Time RS STROBE Pulsewidth Watchdog Timeout Period VCC Detect to RS LOW
Figure 4 (Note 4) Figure 6 Figure 3 Figure 3 Figure 6
ELECTRICAL CHARACTERISTICS: AC: Battery Backup and Threshold Detector: TA = TMIN to TMAX, VCC to 5.5V, unless otherwise specified.VCC Fall Time From to 3.0V VCC Rise Time From to 4.25V
All voltages referenced to ground. No output load. Measured with VCCO and CEO open. The RS output must be held low for a minimum 20msec to guarantee a reset.
|Related products with the same datasheet|
|Some Part number from the same manufacture TelCom Semiconductor|
|TC70COA Micromaster - System Supervisor With Power Supply Monitor, Watchdog And Battery Backup|
|TC7106ACPL 3-1/2 Digit A/D Converter. Drive LCD Display Directly. Internal Reference With Low Temperature Drift 20ppm/degC,typ.|
|TC7107ACPL Micromaster - System Supervisor With Power Supply Monitor, Watchdog And Battery Backup|
|TC7107ARCKW 3-1/2 Digit A/D Converter. Drive Led Display Directly. Internal Reference With Low Temperature Drift 20ppm/degC,typ.|
AAT3131 : High Efficiency 1X/1.5X Fractional Charge Pump For White Led Applicationsthe AAT3131 is a Low Noise, Constant Frequencycharge Pump DC/DC Converter That Uses a Dualmode Load Switch (1X) And Fractional (1.5X) Conversionto Maximize Efficiency For White Led Applications.the Device CAN be Used to Produce Currentlevels up to 20mA in Three of Its Outputs,.
GS3T5-52 : 3 W DC-DC Converter For Ecl. The a 3.12W DC-DC converter designed to provide an isolated 5.2V/600mA power source. The module operates from a 5V input source and continuous short-circuit protection. ELECTRICAL CHARACTERISTICS (Tamb.= 25° C unless otherwise specified) Symbol Vi Iir Vo Vor Vorn VOL VOO Io Iosc Vis fs Top Tstg Parameter Input Voltage Reflected Input Current Output.
HV5522 : High Voltage Driver. Sink Only Outputs Open Drain N-channel. HV5622/HV5630 32-Channel Serial To Parallel Converter With Open Drain Outputs Package Options Device HV5622 HV5630 Recommended Operating VPP max 300V 44 J-Lead Quad Ceramic Chip Carrier HV5630DJ 44 J-Lead Quad Plastic Chip Carrier HV5630PJ 44 Lead Quad Plastic Gullwing HV5622PG HV5630PG Die HV5622X HV5630X Processed with HVCMOS® technology Sink current.
LTC4006 : Switching Chargers. LTC4006, 4A High Efficiency Standalone Li-ion Battery Charger.
MAX6378UR__-T : 3-pin, Ultra-low-power Sc70/sot23 Voltage Detectors. The MAX6375MAX6380 are ultra-low-power circuits used for monitoring battery, power-supply, and regulated system voltages. Each detector contains a precision bandgap reference, comparator, and internally trimmed resistors that set specified trip threshold voltages. These devices provide excellent circuit reliability and low cost by eliminating external.
MC78L08A : 3-Terminal 0.1A Postive Voltage Regulator. Maximum Output Current of 100mA Output Voltage 15V, 18V and 24V Thermal Overload Protection Short Circuit Current Limiting Output Voltage Offered in ±5% Tolerance The MC78LXXA/LM78LXXA/MC78L05AA series of fixed voltage monolithic integrated circuit voltage regulators are suitable for application that required supply current to 100mA. Parameter Input.
MTD2006F : . n Dual full-bridge for a bipolar stepper motor n Constant current control (fixed frequency PWM control) n Current decay selection (correspond to microstepping drive) n Noise cancellation function (no need external RC) n Integrated flywheel and flyback diodes n Cross conduction protection n Overheating alarm function n Surface mount type package with.
P10TG-1205E21H35 : Power/w = 2 ;; Input/vdc = 9-18/18-36/36-72 ;; Output/vdc = 3,3/5/12/15/18Regulated ;; ISOlation = 3500V ;; Package = DIP24.
SC4041AS : Precision Shunt Voltage Reference. The is a two terminal precision voltage reference with thermal stability guaranteed over temperature. The very low fixed output voltage V is ideal for use with today's low voltage integrated circuits. The SC4041 has a typical dynamic output impedance of 0.25. Active output circuitry provides a very sharp turn on characteristic - the minimum operating.
TD220 : Gate Driver With Vreg And Two Point Regulator. Gate Driver with VReg and Two Point Regulator DATASHEET 60mA/120mA MIN GATE DRIVE TWO POINT REGULATOR FOR SWITCHING CHARGE PUMP SUPPLY OR 5V VOLTAGE REGULATOR LOW STARTUP CURRENT UVLO PROTECTION 2kV ESD PROTECTION is a solution for micro-controller based offline applications. TD220 includes a two point regulator for power supply generation, 5V (TD221).
TPS77930 : . Open Drain Power-On Reset With 220-ms Delay 250-mA Low-Dropout Voltage Regulator Available 2.5-V, 3-V, Fixed Output and Adjustable Versions Dropout Voltage Typically mA (TPS77930) Ultralow 92-µA Quiescent Current (Typ) 8-Pin MSOP (DGK) Package Low Noise (55 µVrms) With No Bypass Capacitor (TPS77918) 2% Tolerance Over Specified Conditions For Fixed-Output.
ISL9005A : ISL9005A is a high performance Low Dropout linear regulator capable of sourcing 300mA current. It has a low standby current and high-PSRR and is stable with output capacitance of 1μF to 10μF with ESR of up to 200mΩ. The ISL9005A has a high PSRR of 75dB and output noise less than 45μVRMS. When coupled with a no load quiescent current.
STP08CP05 : Low voltage 8-Bit constant current. Low voltage power supply down 3V 8 constant current output channels Adjustable output current through external resistor Serial Data IN/Parallel data OUT 3.3V micro driver-able Output current: 5-100mA 30MHz clock frequency Available in high thermal efficiency TSSOP exposed pad ESD protection 2.5kV HBM, 200V MM The is a monolithic, low voltage, low current.
TPS7A4515 : Low-Noise Fast-Transient-Response 1.5-A LDO Regulator The TPS7A45xx devices are low-dropout (LDO) regulators optimized for fast transient response. The device can supply 1.5 A of output current with a dropout voltage of 300 mV. Operating quiescent current is 1 mA, dropping to less than 1 µA in shutdown. Quiescent current is well controlled; it does.
LTC4071 : Li-Ion/Polymer Shunt Battery Charger System With Low Battery Disconnect The LTC4071 allows simple charging of Li-Ion/Polymer batteries from very low current, intermittent or continuous charging sources. A near-zero current low battery latching disconnect function protects even the lowest capacity batteries from deep discharge and potentially irreparable.
PT7M7344XTA : µ µ µ µ µP Supervisor Circuits The PT7M7xxx family microprocessor (µP) supervisory circuits are targeted to improve reliability and accuracy of power-supply circuitry in µP systems. These devices reduce the complexity and number of components required to monitor power-supply and battery functions..
PT7M7342JTA : µ µ µ µ µP Supervisor Circuits The PT7M7xxx family microprocessor (µP) supervisory circuits are targeted to improve reliability and accuracy of power-supply circuitry in µP systems. These devices reduce the complexity and number of components required to monitor power-supply and battery functions..