Features: · 3.3, 5, 12, and 15V versions available
· Logic-controlled ON/OFF
· Packaged in the tiny 5-lead SOT-23 packageApplication· Tiny alternative to LM78LXX series and similar devices
· Tiny 5V±5% to 3.3V, 100 mA converter
· Post regulator for switching DC/DC converter
· Bias supply for analog circuitsPinout
Specifications
| Output Current |
100 mA |
| Output Min |
3.3, 12, 5 Volt |
| Input Max Voltage |
30 Volt |
| Adjustable Output |
No |
| On/Off Pin |
Yes |
| Error Flag |
No |
| Temperature Min |
-40 deg C |
| Temperature Max |
125 deg C |
| Output Max |
3.3, 12, 5 Volt |
| Output Voltage |
3.3, 12, 5 Volt |
| View Using Catalog |
If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
Input Voltage (IN to GND) ...............................35V
Voltage ON/OFF to GND ..................................5.5V
Power Dissipation (Note 5) .......................400 mW
Junction Temp. (TJ) (Note 5) .....................+150°C
Ambient Storage Temp. .................−65 to +150°C
Soldering Time, Temp. (Note 6)
Wave4sec.,................................................. 260°C
Infrared10sec., ...........................................240°C
Vapor Phase75sec., ....................................219°C
ESD (Note 7)
ON/OFF...........................................................1.0kV
All Other Pins..................................................2.0kV
DescriptionThe LM3490 is an integrated linear voltage regulator. It features operation from an input as high as 30V and a guaranteed maximum dropout of 1.2V at the full 100 mA load. Standard packaging for the LM3490 is the 5-lead SOT-23 package. A logic-controlled ON/ ^OFF feature makes the LM3490 ideal for powering subsystems ON and OFF as needed.
The 5, 12, and 15V members of the LM3490 series are intended as tiny alternatives to industry standard LM78LXX series and similar devices. The 1.2V quasi low dropout of LM3490 series devices makes them a nice fit in many applications where the 2 to 2.5V dropout of LM78LXX series devices precludes their (LM78LXX series devices) use.
The LM3490 series features a 3.3V member. The SOT packaging and quasi low dropout features of the LM3490 series converge in this device to provide a very nice, very tiny 3.3V, 100 mA bias supply that regulates directly off the system 5V±5% power supply.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LM3490IM5-12 |
LB300 |
0 |
32249 |
0 |
0 |
3406500 |
2 |
966603676 |
| LM3490IM5-15 |
LB300 |
0 |
32249 |
0 |
0 |
3406500 |
2 |
966603676 |
| LM3490IM5-3.3 |
LB300 |
0 |
32249 |
0 |
0 |
3406500 |
2 |
966603676 |
| LM3490IM5-5.0 |
LB300 |
0 |
32249 |
0 |
0 |
3406500 |
2 |
966603676 |
| LM3490IM5X-12 |
LB300 |
0 |
32249 |
0 |
0 |
3406500 |
2 |
966603676 |
| LM3490IM5X-15 |
LB300 |
0 |
32249 |
0 |
0 |
3406500 |
2 |
966603676 |
| LM3490IM5X-3.3 |
LB300 |
0 |
32249 |
0 |
0 |
3406500 |
2 |
966603676 |
| LM3490IM5X-5.0 |
LB300 |
0 |
32249 |
0 |
0 |
3406500 |
2 |
966603676 |
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.For more information on Reliability Metrics, please click here.
More Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1634: Application Note 1634 Starting Up A Buck Regulator With a Voltage Present At V OUT |
71 Kbytes |
17-May-07 |
Download |
AN-1634 (Japanese): Application Note 1634 Starting Up A Buck Regulator With a Voltage Present At V OUT
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
95 Kbytes |
|
|
AN-1634 (Chinese): Application Note 1634 Starting Up A Buck Regulator With a Voltage Present At V OUT
|
222 Kbytes |
|
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
| AN-1446: Application Note 1446 LM3495 Evaluation Board |
1395 Kbytes |
3-Mar-06 |
Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
LM3490 Data Sheet
