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参数资料
| 型号： | TL7705ACPSE4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封装： | PLASTIC, SO-8 |
| 文件页数： | 3/12页 |
| 文件大小： | 202K |
| 代理商： | TL7705ACPSE4 |
PRODUCT FOLDER | PRODUCT INFO: FEATURES | DESCRIPTION | DATASHEETS | PRICING/AVAILABILITY | SAMPLES |
TL7705A, Single Supply Voltage Supervisor for 5V Systems with Programmable Time Delay
DEVICE STATUS: ACTIVE
PARAMETER NAME
TL7705A
VCC (nom) (V)
18
Vt (V)
4.55
Vin (min) (V)
3.6
Over Voltage Sense No
WDI
No
Reset Active High
Yes
Power Fail
No
ICC (max) (uA)
1800
FEATURES
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Power-On Reset Generator
q
Automatic Reset Generation After Voltage Drop
q
Wide Supply-Voltage Range
q
Precision Voltage Sensor
q
Temperature-Compensated Voltage Reference
q
True and Complement Reset Outputs
q
Externally Adjustable Pulse Duration
q
DESCRIPTION
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The TL77xxA family of integrated-circuit supply-voltage supervisors is specifically designed for use as reset
controllers in microcomputer and microprocessor systems. The supply-voltage supervisor monitors the
supply for undervoltage conditions at the SENSE input. During power up, the RESET\ output becomes active
(low) when VCC attains a value approaching 3.6 V. At this point (assuming that SENSE is above VIT+), the
delay timer function activates a time delay, after which outputs RESET\ and RESET go inactive (high and
low, respectively). When an undervoltage condition occurs during normal operation, outputs RESET\ and
RESET go active. To ensure that a complete reset occurs, the reset outputs remain active for a time delay
after the voltage at the SENSE input exceeds the positive-going threshold value. The time delay is
determined by the value of the external capacitor CT: td = 1.3 × 104 × CT, where CT is in farads (F) and td
is in seconds (s).
During power down (assuming that SENSE is below VIT-), the outputs remain active until the VCC falls below
a maximum of 2 V. After this, the outputs are undefined.
An external capacitor (typically 0.1 uF for the TL77xxAC and TL77xxAI) must be connected to REF to reduce
the influence of fast transients in the supply voltage.
Product Folder:TL7705A, Single Supply Voltage Supervisor for 5V Systems with Programmable Time Delay
file:////roarer/root/export/projects/bitting1/imaging...NG/Avnet/20001221/11272000/TXII/11272000/tl7705a.html (1 of 2) [1/6/2001 3:07:30 PM]
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TL7705ACPSLE | 制造商:TI 制造商全称:Texas Instruments 功能描述:SUPPLY-VOLTAGE SUPERVISORS |
| TL7705ACPSR | 功能描述:监控电路 4.55V Monitor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| TL7705ACPSRE4 | 功能描述:监控电路 Sngl SVS f/5V System w/Prg Time Delay RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| TL7705ACPSRG4 | 功能描述:监控电路 Single Supply Vltg Supervisor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| TL7705ACY | 制造商:TI 制造商全称:Texas Instruments 功能描述:SUPPLY-VOLTAGE SUPERVISORS |
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