L78xxAB STMICROELECTRONICS | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 26
Technical content
Datasheet sections
- 1 Diagram
- 2 Pin configuration
- 3 Maximum ratings
- 4 Test circuits
- 5 Electrical characteristics
- 6 Application information
- 6.1 Design consideration
- 7 Package mechanical data
- 8 Order codes
- 9 Revision history
Features
■ Output current in excess of 1 A ■ Output voltages of 5; 6; 8; 9; 12; 15; 24 V ■ Thermal overload protection ■ Output transition SOA protection ■ 2 % Output voltage tolerance ■ Guaranteed in extended temperature range
Description
The L78xxAB L78xxAC series of three terminal positive regulators are available in TO-220, TO-220FP , and D 2PAK packages and several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problem associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1 A output current, although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents. TO-220FP D2PAK TO-220 Table 1. Device summary
1 Diagram
Figure 1. Block diagram Figure 2. Schematic diagram
2 Pin configuration
Figure 3. Pin connections (top view)
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
Table 4. Electrical characteristics of L7805A (VI = 10 V, IO = 1 A, TJ = 0 to 150 °C (L7805AC),
- Load and line regulation are spec ified at constant junction temperature. Changes in VO due to heating effects must be
taken into account separately. Pulse testing with low duty cycle is used.
Table 5. Electrical characteristics of L7806A (VI = 11 V, IO = 1 A, TJ = 0 to 150 °C (L7806AC),
- Load and line regulation are spec ified at constant junction temperature. Changes in VO due to heating effects must be
taken into account separately. Pulse testing with low duty cycle is used.
Table 6. Electrical characteristics of L7808A (VI = 14 V, IO = 1 A, TJ = 0 to 150 °C (L7808AC),
- Load and line regulation are spec ified at constant junction temperature. Changes in VO due to heating effects must be
taken into account separately. Pulse testing with low duty cycle is used.
Table 7. Electrical characteristics of L7809A (VI = 15 V, IO = 1 A, TJ = 0 to 150 °C (L7809AC),
- Load and line regulation are spec ified at constant junction temperature. Changes in VO due to heating effects must be
taken into account separately. Pulse testing with low duty cycle is used.
Table 8. Electrical characteristics of L7812A (VI = 19 V, IO = 1 A, TJ = 0 to 150 °C (L7812AC),
- Load and line regulation are spec ified at constant junction temperature. Changes in VO due to heating effects must be
taken into account separately. Pulse testing with low duty cycle is used.
Table 9. Electrical characteristics of L7815A (VI = 23 V, IO = 1 A, TJ = 0 to 150 °C (L7815AC),
- Load and line regulation are spec ified at constant junction temperature. Changes in VO due to heating effects must be
taken into account separately. Pulse testing with low duty cycle is used.
Table 10. Electrical characteristics of L7824A (VI = 33 V, IO = 1 A, TJ = 0 to 150 °C (L7824AC),
- Load and line regulation are spec ified at constant junction temperature. Changes in VO due to heating effects must be
taken into account separately. Pulse testing with low duty cycle is used.
6 Application information
6.1 Design consideration
and lead resistance drops since the regulator has no external sense lead. arrangement is 2 V greater than the regulator voltage. Therefore a four ampere plastic power transistor is specified. Figure 8. DC parameter
Package mechanical data L78xxAB - L78xxAC
7 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 box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
L78xxAB - L78xxAC Package mechanical data Dim. mm. inch. A 4.40 4.60 0.17 3 0.181 C1 . 2 3 1.32 0.04 8 0.051 D 2.40 2.72 0.0 94 0.107 D1 1.27 0.050 E0 . 4 9 0.70 0.01 9 0.027 F 0.61 0. 88 0.024 0.0 34 F1 1.14 1.70 0.044 0.067 F2 1.14 1.70 0.044 0.067 G4 . 95 5.15 0.1 94 0.20 3 G1 2.4 2.7 0.0 94 0.106 H2 10.0 10.40 0. 393 0.409 L2 16.4 0.645 L4 1 3.0 14.0 0.511 0.551 L5 2.65 2. 95 0.104 0.116 L6 15.25 15.75 0.600 0.620 L7 6.2 6.6 0.244 0.260 L93 .5 3.93 0.137 0.154 TO-220 mechanical data P011C
Package mechanical data L78xxAB - L78xxAC Dim. mm. inch. A 4.40 4.60 0.17 3 0.181 B 2.5 2.7 0.0 98 0.106 D 2.5 2.75 0.0 98 0.108 E 0.45 0.70 0.017 0.027 F 0.75 1 0.0 300 . 0 39 F1 1.15 1.50 0.045 0.05 9 F2 1.15 1.50 0.045 0.05 9 G4 . 95 5.2 0.1 94 0.204 G1 2.4 2.7 0.0 94 0.106 H 10.0 10.40 0. 393 0.409 L2 16 0.6 30 L3 28.6 30.6 1.126 1.204 L4 9.8 10.6 0. 3850 . 4 1 7 L5 2. 93 .6 0.114 0.142 L6 15. 9 16.4 0.626 0.645 L7 99 .3 0.354 0. 366 DIA. 33 .2 0.11 8 0.126 TO-220FP mechanical data 7012510A-H
Figure 12. Drawing dimension D 2PAK (type STD-ST)
Figure 13. Drawing dimension D 2PAK (type WOOSEOK-Subcon.)
ST's package suggested footprint. Table 11. D 2PAK mechanical data Type STD-ST Type WOOSEOK-Subcon.
Figure 14. D 2PAK footprint recommended data Table 12. Footprint data
L78xxAB - L78xxAC Package mechanical data Dim. mm. inch. A1 80 7.0 86 D 20.2 0.7 95 N6 0 2 . 362 T 14.4 0.567 Tape & reel D2PAK-P2PAK-D2PAK/A-P2PAK/A mechanical data
8 Order codes
Table 13. Order codes
9 Revision history
Table 14. Document revision history 21-Jun-2004 9 Document updating. 04-Aug-2006 10 Order codes updated and new template. 19-Jan-2007 11 D 2PAK mechanical data has been updated and add footprint data. 07-Mar-2007 12 Update figure D 2PAK in cover page. 01-Jun-2007 13 Order codes updated. 25-Jul-2007 14 Add Table 1 in cover page. 11-Dec-2007 15 Modified: Table 13. 20-Feb-2008 16 Modified: Table 13 on page 24. 15-Jul-2008 17 Modified: Table 1 on page 1 and Table 13 on page 24.