CD00000448 STMICROELECTRONICS | Alldatasheet

Document overview

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  • PDF pages: 31

Technical content

Datasheet sections

  • 1 Diagram
  • 2 Pin configuration
  • 3 Maximum ratings
  • 4 Test circuits
  • 5 Electrical characteristics
  • 6 Typical performance
  • 7 Applications information
  • 7.1 Design considerations
  • 8 Package mechanical data
  • 9 Order codes
  • 10 Revision history

Features

■ Output current to 0.5 A ■ Output voltages of 5; 6; 8; 9; 10; 12; 15; 24 V ■ Thermal overload protection ■ Short circuit protection ■ Output transition SOA protection ■ ± 2 % output voltage tolerance ■ Guaranteed in extended temperature range

Description

The L78MxxA series of three-terminal positive regulators is available in TO-220 and DPAK packages and with several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shutdown and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 0.5 A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents. DPAKTO-220 Table 1. Device summary

1 Diagram

Figure 1. Block diagram

2 Pin configuration

Figure 2. Pin connections (top view) Figure 3. Schematic diagram

3 Maximum ratings

Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Table 2. Absolute maximum ratings Table 3. Thermal data Figure 4. Application circuit

4 Test circuits

Figure 5. DC parameter Figure 6. Load regulation Figure 7. Ripple rejection

5 Electrical characteristics

TJ = -40 to 125 °C (AB), TJ = 0 to 125 °C (AC) unless otherwise specified. Table 4. Electrical characteristics of L78M05XX

TJ = -40 to 125 °C (AB), TJ = 0 to 125 °C (AC) unless otherwise specified. Table 5. Electrical characteristics of L78M06XX

°C (AB), TJ = 0 to 125 °C (AC) unless otherwise specified). Table 6. Electrical characteristics of L78M08XX

TJ = -40 to 125 °C (AB), TJ = 0 to 125 °C (AC) unless otherwise specified). Table 7. Electrical characteristics of L78M09XX

TJ = -40 to 125 °C (AB), TJ = 0 to 125 °C (AC) unless otherwise specified. Table 8. Electrical characteristics of L78M10XX

TJ = -40 to 125 °C (AB), TJ = 0 to 125 °C (AC) unless otherwise specified. Table 9. Electrical characteristics of L78M12XX

TJ = -40 to 125 °C (AB), TJ = 0 to 125 °C (AC) unless otherwise specified. Table 10. Electrical characteristics of L78M15XX

TJ = -40 to 125 °C (AB), TJ = 0 to 125 °C (AC) unless otherwise specified. Table 11. Electrical characteristics of L78M24XX

6 Typical performance

Figure 8. Dropout voltage vs. junction temp. Figure 9. Dropout characteristics Figure 10. Peak output current vs. input- Figure 11. Output voltage vs. junction Figure 12. Supply voltage rejection vs. Figure 13. Quiescent current vs. junction

7 Applications information

7.1 Design considerations

mounted with the shortest possible leads directly across the regulators input terminals. resistance drops since the regulator has no external sense lead. Figure 17. Current regulator Figure 18. Adjustable output regulator

8 Package mechanical data

Note: In spite of some difference in tolerances, the packages are compatible. Table 12. TO-220 mechanical data

Figure 21. TO-220 (type STD-ST Dual Gauge) package dimensions Note: 1 Maximum resin gate protrusion: 0.5 mm.

2 Resin gate position is accepted in each of the two positions shown on the drawing, or their

Figure 22. TO-220 (type STD-ST Single Gauge) package dimensions

Figure 25. DPAK type STD-ST package dimensions

Figure 26. DPAK type FUJITSU-subcon package dimensions

Figure 27. DPAK type IDS-subcon package dimensions

compatible with the ST's package suggested footprint. Table 13. DPAK mechanical data Type STD-ST Type Fujitsu-subcon. Type IDS-subcon.

Figure 28. DPAK footprint recommended data Table 14. Footprint data

Package mechanical data L78MxxAB, L78MxxAC 28/31 Doc ID 2147 Rev 13 Dim. mm. inch. A 330 12. 992 D 20.2 0.7 95 N6 0 2 . 362 T2 2 . 4 0 . 882 Tape & reel DPAK-PPAK mechanical data

9 Order codes

Table 15. Order codes

Table 16. Document revision history 30-Aug-2006 3 Order codes updated. 05-Oct-2006 4 DPAK mechanical data updated and add footprint data. 20-Feb-2008 6 Modified: T able 15 on page 29. 15-Jul-2008 7 Modified: T able 15 on page 29. 15-Apr-2009 8 Modified: Figure 9 on page 15 and Figure 15 on page 16. 28-Jul-2009 9 Modified: T able 15 on page 29. 11-Nov-2010 10 Modified: R thJC value for TO-220 Table 3 on page 5. 09-Feb-2012 11 Added: order code L78M15ABV-DG T able 15 on page 29. 09-Mar-2012 12 Added: order code L78M05ABV-DG T able 15 on page 29. Figure 23 and Figure 24 on page 22.