L4940XX STMICROELECTRONICS [STMicroelectronics], L4940XX Datasheet
L4940XX
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L4940XX Summary of contents
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... Very low drop 1.5 A regulator TO-220 D prolonging battery life. Each type employs internal current limiting, antisaturation circuit, thermal shut-down and safe area protection. Order code 2 TO-220FP D PAK L4940D2T5-TR L4940P85 L4940D2T85-TR L4940D2T10-TR L4940D2T12-TR Rev 10 L4940xx TO-220FP 2 PAK Output voltage 1/23 www.st.com 23 ...
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Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Block diagram Figure 1. Block diagram 3/23 ...
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Pin configuration Figure 2. Pin connections (top view) TO-220 4/23 TO-220FP 2 D PAK ...
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Maximum ratings Table 2. Absolute maximum ratings Symbol V Forward input voltage I V Reverse input voltage IR I Output current O P Power dissipation D T Storage temperature range stg T Operating junction temperature range op Note: Absolute ...
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Test circuits Figure 3. DC parameters Figure 4. Load rejection Figure 5. Ripple rejection 6/23 ...
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... Electrical characteristics Table 4. Electrical characteristics of L4940xx5 (Refer to test circuit µ 25°C, unless otherwise specified Symbol Parameter V Output voltage O V Output voltage O V Input voltage I ΔV Line regulation O ΔV Load regulation O I Quiescent current q ΔI Quiescent current change q ΔV /Δ ...
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... Table 5. Electrical characteristics of L4940xx85 (Refer to test circuit µ 25°C, unless otherwise specified Symbol Parameter V Output voltage O V Output voltage O V Input voltage I ΔV Line regulation O ΔV Load regulation O I Quiescent current q ΔI Quiescent current change q ΔV /ΔT Output voltage drift ...
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... Table 6. Electrical characteristics of L4940xx10 (Refer to test circuit µ 25°C, unless otherwise specified Symbol Parameter V Output voltage O V Output voltage O V Input voltage I ΔV Line regulation O ΔV Load regulation O I Quiescent current q ΔI Quiescent current change q ΔV /ΔT Output voltage drift ...
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... Table 7. Electrical characteristics of L4940xx12 (Refer to test circuit µ 25°C, unless otherwise specified Symbol Parameter V Output voltage O V Output voltage O V Input voltage I ΔV Line regulation O ΔV Load regulation O I Quiescent current q ΔI Quiescent current change q ΔV /ΔT Output voltage drift ...
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Typical application Figure 6. Dropout voltage vs output current Figure 8. Output voltage vs temperature (L4940V5) Figure 10. Output voltage vs temperature (L4940V10) Figure 7. Dropout voltage vs temperature Figure 9. Output voltage vs temperature (L4940V85) Figure 11. Output ...
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Figure 12. Quiescent current vs temperature (L4940V5) Figure 14. Quiescent current vs output current (L4940V5) Figure 16. Peak output current vs input/output differential voltage (L4940V5) 12/23 Figure 13. Quiescent current vs input voltage (L4940V5) Figure 15. Short circuit current vs ...
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Figure 18. Low voltage behavior (L4940V85) Figure 20. Low voltage behavior (L4940V12) Figure 22. Supply voltage rejection vs output current (L4940V5) Figure 19. Low voltage behavior (L4940V10) Figure 21. Supply voltage rejection vs frequency (L4940V5) Figure 23. Lad dump characteristics ...
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Figure 24. Line transient response (L4940V5) Figure 26. Load transient response 14/23 Figure 25. Total power dissipation ...
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Schematic application Figure 27. Distributed supply with On-card L4940 and L4941 low drop regulator Figure 28. Distributed supply with On-card L4940 and L4941 low drop regulator ADVANTAGES OF THESE APPLICATION ARE: On card regulation with short-circuit and thermal protection ...
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Figure 29. Distributed supply with On-card L4940 and L4941 low drop regulator ADVANTAGES OF THIS CONFIGURATION ARE: Very high regulation (line and load on both the output voltage 12V output short circuit and thermally protected Very high efficiency on the ...
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Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner ...
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Dim. Min. A 4.40 C 1. 0.49 F 0.61 F1 1.14 F2 1.14 G 4.95 G1 2 13.0 L5 2.65 L6 15.25 L7 6.2 L9 3.5 DIA. 3.75 18/23 TO-220 mechanical data ...
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TO-220FP mechanical data mm. Dim. Min. Typ A 4.40 B 2.5 D 2.5 E 0.45 F 0.75 F1 1.15 F2 1.15 G 4.95 G1 2 28.6 L4 9.8 L5 2 DIA. ...
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Dim. Min. A 4.4 A1 2.49 A2 0.03 B 0.7 B2 1.14 C 0.45 C2 1. 1.27 L3 1 0° 20/ PAK mechanical ...
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Tape & reel D PAK-P mm. Dim. Min. Typ 12.8 13 10.50 10.6 Bo 15.70 15.80 Ko 4.80 4.90 Po 3.9 4.0 P 11.9 12 PAK-D PAK/A-P PAK/A ...
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Revision history Table 8. Document revision history Date Revision 04-Feb-2005 6 18-Sep-2006 7 31-May-2007 8 19-Sep-2007 9 20-Feb-2008 10 22/23 Changes 2 Add new package D PAK/A. Order codes has been updated and new template. Order codes has been ...
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Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any ...