LM3940IMPX-3.3 National Semiconductor, LM3940IMPX-3.3 Datasheet
LM3940IMPX-3.3
Specifications of LM3940IMPX-3.3
Available stocks
Related parts for LM3940IMPX-3.3
LM3940IMPX-3.3 Summary of contents
Page 1
... View) Order Part Number LM3940IT-3.3 NSC Drawing Number TO3B 3-Lead TO-263 Package (Front View) Order Part Number LM3940IS-3.3 NSC Drawing Number TS3B © 2007 National Semiconductor Corporation Features ■ Output voltage specified over temperature ■ Excellent load regulation ■ Guaranteed 1A output current ■ ...
Page 2
Ceramic Dual-in-Line Package (Top View) Order Part Number LM3940J-3.3-QML 5962-9688401QEA NSC Drawing Number J16A 16-Lead Ceramic Surface-Mount Package (Top View) Order Part Number LM3940WG-3.3-QML 5962-9688401QXA NSC Drawing Number WG16A www.national.com 1208027 Pin 2 and pin 7 are fused to ...
Page 3
... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Lead Temperature (Soldering, 5 seconds) Power Dissipation (Note 2) Electrical Characteristics Limits in standard typeface are for T = 25°C, and limits in boldface type apply over the full operating temperature range. Unless ...
Page 4
Typical Performance Characteristics Dropout Voltage Output Voltage vs. Temperature Quiescent Current vs. V www.national.com Dropout Voltage vs. Temperature 1208013 Quiescent Current vs. Temperature 1208015 Quiescent Current vs. Load IN 1208017 4 1208014 1208016 1208018 ...
Page 5
Line Transient Response 1208019 Ripple Rejection 1208021 Output Impedance 1208023 Load Transient Response Low Voltage Behavior Peak Output Current 5 1208020 1208022 1208024 www.national.com ...
Page 6
Application Hints EXTERNAL CAPACITORS The output capacitor is critical to maintaining regulator stabil- ity, and must meet the required conditions for both ESR (Equivalent Series Resistance) and minimum amount of ca- pacitance. MINIMUM CAPACITANCE: The minimum output capacitance required to ...
Page 7
If a manufactured heatsink selected, the value of heatsink-to-ambient thermal resistance, θ calculated: θ = θ − θ − θ (H−A) (JA) (C−H) (J−C) Where: θ is defined as the thermal resistance from the (J−C) junction to ...
Page 8
Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 3-Lead SOT-223 Package Order Part Number LM3940IMP-3.3 NSC Package Number MP04A 3-Lead TO-220 Package Order Part Number LM3940IT-3.3 NSC Package Number TO3B 8 ...
Page 9
TO-263 Package Order Part Number LM3940IS-3.3 NSC Package Number TS3B 16-Lead Ceramic Dual-in-Line Package Order Part Number LM3940J-3.3-QML 5962-9688401QEA NSC Drawing Number J16A 9 www.national.com ...
Page 10
Ceramic Surface-Mount Package Order Part Number LM3940WG-3.3-QML 5962-9688401QXA NSC Package Number WG16A 8-Lead LLP Order Part Number LM3940LD-3.3 NSC Package Number LDC08A 10 ...
Page 11
Notes 11 www.national.com ...
Page 12
... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...