Electronic Components Datasheet Search |
|
LM2940S-8.0 Datasheet(PDF) 7 Page - National Semiconductor (TI) |
|
|
LM2940S-8.0 Datasheet(HTML) 7 Page - National Semiconductor (TI) |
7 / 19 page Electrical Characteristics (Continued) V IN =VO + 5V, IO = 1A, CO = 22 µF, unless otherwise specified. Boldface limits apply over the entire operating tempera- ture range of the indicated device. All other specifications apply for T A =TJ = 25˚C. Output Voltage (V O) 12V 15V Units LM2940 LM2940/833 LM2940 LM2940/833 Parameter Conditions Typ Limit Limit Typ Limit Limit (Note 4) (Note 5) (Note 4) (Note 5) Long Term 48 60 mV/ Stability 1000 Hr Dropout Voltage I O = 1A 0.5 0.8/1.0 0.7/1.0 0.5 0.8/1.0 0.7/1.0 V MAX I O = 100 mA 110 150/200 150/200 110 150/200 150/200 mV MAX Short Circuit (Note 6) 1.9 1.6 1.6/1.3 1.9 1.6 1.6/1.3 A MIN Current Maximum Line R O = 100 Ω Transient LM2940, T ≤ 100 ms 75 60/60 LM2940/883, T ≤ 20 ms 40/40 40/40 V MIN LM2940C, T ≤ 1 ms 5545 5545 Reverse Polarity R O = 100 Ω DC Input LM2940, LM2940/883 −30 −15/−15 −15/−15 −15/−15 V MIN Voltage LM2940C −30 −15 −30 −15 Reverse Polarity R O = 100 Ω Transient Input LM2940, T ≤ 100 ms −75 −50/−50 Voltage LM2940/883, T ≤ 20 ms −45/−45 −45/−45 V MIN LM2940C, T ≤ 1 ms −55 −45/−45 −55 −45/−45 Thermal Performance Thermal Resistance Junction-to-Case 3-Lead TO-220 4 ˚C/W 3-Lead TO-263 4 ˚C/W Thermal Resistance Junction-to-Ambient 3-Lead TO-220 60 ˚C/W 3-Lead TO-263 80 ˚C/W 8-Lead LLP (Note 2) 35 ˚C/W Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are conditions under which the device functions but the specifications might not be guaranteed. For guaranteed specifications and test conditions see the Electrical Characteristics. Note 2: The maximum allowable power dissipation is a function of the maximum junction temperature, TJ, the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. The value of θJA (for devices in still air with no heatsink) is 60˚C/W for the TO-220 package, 80˚C/W for the TO-263 package, and 174˚C/W for the SOT-223 package. The effective value of θJA can be reduced by using a heatsink (see Application Hints for specific information on heatsinking). The value of θJA for the LLP package is specifically dependent on PCB trace area, trace material, and the number of layers and thermal vias. For improved thermal resistance and power dissipation for the LLP package, refer to Application Note AN-1187. It is recommended that 6 vias be placed under the center pad to improve thermal performance. Note 3: ESD rating is based on the human body model, 100 pF discharged through 1.5 k Ω. Note 4: All limits are guaranteed at TA =TJ = 25˚C only (standard typeface) or over the entire operating temperature range of the indicated device (boldface type). All limits at TA =TJ = 25˚C are 100% production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control methods. Note 5: All limits are guaranteed at TA =TJ = 25˚C only (standard typeface) or over the entire operating temperature range of the indicated device (boldface type). All limits are 100% production tested and are used to calculate Outgoing Quality Levels. Note 6: Output current will decrease with increasing temperature but will not drop below 1A at the maximum specified temperature. www.national.com 7 |
Similar Part No. - LM2940S-8.0 |
|
Similar Description - LM2940S-8.0 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |