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TLC7705-Q1 - 产品图解:
TLC7705-Q1-汽车类微功耗电源电压监控器
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TI产品 - TLC7705-Q1介绍
TLC7705-Q1 - 汽车类微功耗电源电压监控器

TLC7705-Q1是TI公司的一款无产品,TLC7705-Q1是汽车类微功耗电源电压监控器,本页介绍了TLC7705-Q1的产品说明、应用、特性等,并给出了与TLC7705-Q1相关的TI元器件型号供参考。

TLC7705-Q1 - 汽车类微功耗电源电压监控器 - 无 - 监控器和复位IC - TI公司(Texas Instruments,德州仪器)

产品描述

The TLC77xx family of micropower supply voltage supervisors provide reset control, primarily in microcomputer and microprocessor systems.

During power-on, RESET is asserted when VDD reaches 1 V. After minimum VDD ≥ 2 V) is established, the circuit monitors SENSE voltage and keeps the reset outputs active as long as SENSE voltage (VI(SENSE)) remains below the threshold voltage. An internal timer delays return of the output to the inactive state to ensure proper system reset. The delay time, td, is determined by an external capacitor: td = 2.1 × 104 × CT Where CT is in farads td is in seconds

Except for the TLC7701, which can be customized with two external resistors, each supervisor has a fixed SENSE threshold voltage set by an internal voltage divider. When SENSE voltage drops below the threshold voltage, the outputs become active and stay in that state until SENSE voltage returns above threshold voltage and the delay time, td, has expired.

In addition to the power-on-reset and undervoltage-supervisor function, the TLC77xx adds power-down control support for static RAM. When CONTROL is tied to GND, RESET will act as active high. The voltage monitor contains additional logic intended for control of static memories with battery backup during power failure. By driving the chip select (CS) of the memory circuit with the RESET output of the TLC77xx and with the CONTROL driven by the memory bank select signal (CSH1) of the microprocessor (see Figure 10), the memory circuit is automatically disabled during a power loss. (In this application the TLC77xx power has to be supplied by the battery.)

产品特性

  • Qualified for Automotive Applications
  • Power-On Reset Generator
  • Automatic Reset Generation After Voltage Drop
  • Precision Voltage Sensor
  • Temperature-Compensated Voltage Reference
  • Programmable Delay Time by External Capacitor
  • Supply Voltage Range...2 V to 6 V
  • Defined RESET Output from VDD ≥ 1 V
  • Power-Down Control Support for Static RAM With Battery Backup
  • Maximum Supply Current of 16 µA
  • Power Saving Totem-Pole Outputs

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