Hot-selling and scarce LM140LAH-5-0 3-Terminal Positive Regulators CAN3 spot stock

Product Descriptions

The   LM140L   series   of   three   terminal   positive regulators   is   available  with   several   fixed   output voltages  making  them  useful  in  a  wide  range  of applications. The LM140LA is an improved version of the  LM78LXX  series  with  a  tighter  output  voltage tolerance (specified over the full military temperature range), higher ripple rejection, better regulation and lower  quiescent  current.  The  LM140LA  regulators have ±2% V_OUT specification, 0.04%/V line regulation, and  0.01%/mA  load  regulation.  When  used  as  a zener  diode/resistor  combination  replacement,  the LM140LA   usually   results   in   an   effective   output impedance improvement of two orders of magnitude, and  lower  quiescent  current.  These  regulators  can provide   local  on  card   regulation,  eliminating  the distribution  problems  associated  with  single  point regulation. The voltages available allow the LM140LA to  be  used  in  logic systems,  instrumentation,  Hi-Fi, and other solid state electronic equipment. Although designed primarily as fixed voltage regulators, these devices  can  be  used  with  external  components  to obtain adjustable voltages and currents.

The  LM140LA/LM340LA  are  available  in  the  low profile metal three lead TO (NDT) and the LM340LA are  also  available  in  the  plastic  TO-92  (LP).  With adequate heat sinking the regulator can deliver 100 mA output current. Current limiting is included to limit the  peak output current to a safe value. Safe area protection for the output transistor is provided to limit internal    power    dissipation.    If    internal    power dissipation  becomes  too  high  for  the  heat  sinking provided,  the  thermal  shut-down  circuit  takes  over, preventing the IC from overheating.

Product Features

•    Line Regulation of 0.04%/V

•    Load Regulation of 0.01%/mA

•    Output Voltage Tolerances of

–   ±2% at Tj = 25°C and ±4% Over the Temperature Range (LM140LA)

–   ±3% Over the Temperature Range(LM340LA)

•    Output Current of 100 mA

•    Internal Thermal Overload Protection

•    Output Transistor Safe Area Protection

•    Internal Short Circuit Current Limit

•    Available in

–   Metal TO Low Profile Package(LM140LA/LM340LA)

–   Plastic TO-92 (LM340LA)

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Product Specification

Product Photos

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