电源序列发生器 - LM3880

LM3880 (正在供货)

电源序列发生器

 

描述

The LM3880 Simple Power Supply Sequencer offers the easiest method to control power up sequencing and power down sequencing of multiple Independent voltage rails. By staggering the startup sequence, it is possible to avoid latch conditions or large in-rush currents that can affect the reliability of the system.

Available in a 6-pin SOT-23-6 package, the Simple Sequencer contains a precision enable pin and three open-drain output flags. When the LM3880 is enabled, the three output flags will sequentially release, after individual time delays, thus permitting the connected power supplies to start up. The output flags will follow a reverse sequence during power down to avoid latch conditions.

EPROM capability allows every delay and sequence to be fully adjustable. Contact Texas Instruments if a nonstandard configuration is required.

特性

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With he Following Results:
    • Device Temperature Grade: –40°C to 125°C
      Operating Junction Temperature Range
  • Easiest Method to Sequence Rails
  • Power-Up and Power-Down Control
  • Tiny Footprint
  • Low Quiescent Current of 25 µA
  • Input Voltage Range of 2.7 V to 5.5 V
  • Standard Timing Options Available
  • Customization of Timing and Sequence Available
    Through Factory Programmability

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参数 与其它产品相比 序列发生器

 
VCC (Min) (V)
VCC (Max) (V)
Iq (Typ) (uA)
Time Delay (ms)
Number of Sequenced Outputs
Rating
Pin/Package
LM3880 LM3880-Q1 LM3881
2.7    2.7    2.7   
5.5    5.5    5.5   
25    25    80   
2
10
16
30
60
120   
2
10
16
30
60
120   
Programmable   
3    3    3   
Catalog    Automotive    Catalog   
6SOT-23    6SOT-23    8VSSOP   

其它合格版本 LM3880

版本 器件型号 定义
汽车电子 LM3880-Q1 Q100 适用于追求零缺陷的高可靠性汽车电子应用的器件

WEBENCH® Designer LM3880

  Range
Vcc  V 2.70 to 5.50V
Number of Flags
Flag Delay  ms