L78xxAB L78xxAC Precision 1 A regulators 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 TO-220 TO-220FP Description The L78xxAB L78xxAC series of three terminal positive regulators are available in TO-220, TO-220FP, and D2PAK 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. Table 1. D2PAK Device summary Order codes July 2008 L7805AB L7809AC L7805AC L7812AB L7806AB L7812AC L7806AC L7815AB L7808AB L7815AC L7808AC L7824AB L7809AB L7824AC Rev 17 1/26 www.st.com 26 Contents L78xxAB - L78xxAC Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Test circuits 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6.1 ............................................... 6 Design consideration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8 Order codes 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 2/26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 L78xxAB - L78xxAC 1 Diagram Figure 1. Block diagram Figure 2. Schematic diagram Diagram 3/26 Pin configuration L78xxAB - L78xxAC 2 Pin configuration Figure 3. Pin connections (top view) TO-220 TO-220FP D2PAK 4/26 L78xxAB - L78xxAC Maximum ratings 3 Maximum ratings Table 2. Absolute maximum ratings Symbol Parameter Value for VO= 5 to 18V 35 for VO= 20, 24V 40 Unit VI DC input voltage IO Output current Internally limited mA PD Power dissipation Internally limited mW -65 to 150 °C TSTG Storage temperature range TOP Operating junction temperature range V for L7800AC 0 to 150 for L7800AB -40 to 125 °C Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Table 3. Thermal data Symbol Parameter TO-220 TO-220FP D2PAK Unit RthJC Thermal resistance junction-case 3 5 3 °C/W RthJA Thermal resistance junction-ambient 50 60 62.5 °C/W Figure 4. Application circuit 5/26 Test circuits 4 Test circuits Figure 5. DC parameter Figure 6. Load regulation Figure 7. Ripple rejection 6/26 L78xxAB - L78xxAC L78xxAB - L78xxAC Electrical characteristics 5 Electrical characteristics Table 4. Electrical characteristics of L7805A (VI = 10 V, IO = 1 A, TJ = 0 to 150 °C (L7805AC), TJ = -40 to 125 °C (L7805AB), unless otherwise specified) Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C 4.9 5 5.1 V VO Output voltage IO = 5mA to 1A, PO ≤15W VI = 7.5 to 20V 4.8 5 5.2 V VI = 7.5 to 25V, IO = 500 mA 7 50 mV VI = 8 to 12V 10 50 mV VI = 8 to 12V, TJ = 25°C 2 25 mV VI = 7.3 to 20V, TJ = 25°C 7 50 mV IO = 5mA to 1A 25 100 mV IO = 5mA to 1.5A, TJ = 25°C 30 100 V IO = 250 to 750mA 8 50 V 4.3 6 mA 6 mA VI = 8 to 25V, IO = 500 mA 0.8 mA VI = 7.5 to 20V, TJ = 25°C 0.8 mA IO = 5mA to 1A 0.5 mA ΔVO (1) ΔVO(*) Iq ΔIq Line regulation Load regulation Quiescent current Quiescent current change TJ = 25°C Supply voltage rejection VI = 8 to 18V, f = 120Hz, IO = 500mA 68 dB Vd Dropout voltage IO = 1A, TJ = 25°C 2 V eN Output noise voltage TA = 25°C, B =10Hz to 100kHz 10 µV/VO RO Output resistance f =1kHz 17 mΩ Isc Short circuit current VI = 35V, TA = 25°C 0.2 A Iscp Short circuit peak current TJ = 25°C 2.2 A -1.1 mV/°C SVR ΔVO/ΔT Output voltage drift 1. Load and line regulation are specified 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. 7/26 Electrical characteristics Table 5. Symbol L78xxAB - L78xxAC Electrical characteristics of L7806A (VI = 11 V, IO = 1 A, TJ = 0 to 150 °C (L7806AC), TJ = -40 to 125 °C (L7806AB), unless otherwise specified) Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C 5.88 6 6.12 V VO Output voltage IO = 5mA to 1A, PO ≤15W VI = 8.6 to 21V 5.76 6 6.24 V VI = 8.6 to 25V, IO = 500 mA 9 60 mV VI = 9 to 13V 11 60 mV VI = 9 to 13V, TJ = 25°C 3 30 mV VI = 8.3 to 21V, TJ = 25°C 9 60 mV IO = 5mA to 1A 25 100 mV IO = 5mA to 1.5A, TJ = 25°C 30 100 V IO = 250 to 750mA 10 50 V TJ = 25°C 4.3 6 mA 6 mA VI = 9 to 25V, IO = 500 mA 0.8 mA VI = 8.6 to 21V, TJ = 25°C 0.8 mA IO = 5mA to 1A 0.5 mA ΔVO (1) ΔVO (1) Iq ΔIq Line regulation Load regulation Quiescent current Quiescent current change Supply voltage rejection VI = 9 to 19V, f = 120Hz, IO = 500mA 65 dB Vd Dropout voltage IO = 1A, TJ = 25°C 2 V eN Output noise voltage TA = 25°C, B =10Hz to 100kHz 10 µV/VO RO Output resistance f =1kHz 17 mΩ Isc Short circuit current VI = 35V, TA = 25°C 0.2 A Iscp Short circuit peak current TJ = 25°C 2.2 A -0.8 mV/°C SVR ΔVO/ΔT Output voltage drift 1. Load and line regulation are specified 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. 8/26 L78xxAB - L78xxAC Table 6. Symbol Electrical characteristics Electrical characteristics of L7808A (VI = 14 V, IO = 1 A, TJ = 0 to 150 °C (L7808AC), TJ = -40 to 125 °C (L7808AB), unless otherwise specified) Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C 7.84 8 8.16 V VO Output voltage IO = 5mA to 1A, PO ≤15W VI = 10.6 to 23V 7.7 8 8.3 V VI = 10.6 to 25V, IO = 500 mA 12 80 mV VI = 11 to 17V 15 80 mV VI = 11 to 17V, TJ = 25°C 5 40 mV VI = 10.4 to 23V, TJ = 25°C 12 80 mV IO = 5mA to 1A 25 100 mV IO = 5mA to 1.5A, TJ = 25°C 30 100 V IO = 250 to 750mA 10 50 V TJ = 25°C 4.3 6 mA 6 mA VI = 11 to 25V, IO = 500 mA 0.8 mA VI = 10.6 to 23V, TJ = 25°C 0.8 mA IO = 5mA to 1A 0.5 mA ΔVO (1) ΔVO (1) Iq ΔIq Line regulation Load regulation Quiescent current Quiescent current change Supply voltage rejection VI = 11.5 to 21.5V, f = 120Hz, IO = 500mA 62 dB Vd Dropout voltage IO = 1A, TJ = 25°C 2 V eN Output noise voltage TA = 25°C, B =10Hz to 100kHz 10 µV/VO RO Output resistance f =1kHz 18 mΩ Isc Short circuit current VI = 35V, TA = 25°C 0.2 A Iscp Short circuit peak current TJ = 25°C 2.2 A -0.8 mV/°C SVR ΔVO/ΔT Output voltage drift 1. Load and line regulation are specified 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. 9/26 Electrical characteristics Table 7. Symbol L78xxAB - L78xxAC Electrical characteristics of L7809A (VI = 15 V, IO = 1 A, TJ = 0 to 150 °C (L7809AC), TJ = -40 to 125 °C (L7809AB), unless otherwise specified) Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C 8.82 9 9.18 V VO Output voltage IO = 5mA to 1A, PO ≤15W VI = 10.6 to 23V 8.65 9 9.35 V VI = 10.6 to 25V, IO = 500 mA 12 90 mV VI = 11 to 17V 15 90 mV VI = 11 to 17V, TJ = 25°C 5 45 mV VI = 10.4 to 23V, TJ = 25°C 12 90 mV IO = 5mA to 1A 25 100 mV IO = 5mA to 1.5A, TJ = 25°C 30 100 V IO = 250 to 750mA 10 50 V TJ = 25°C 4.3 6 mA 6 mA VI = 11 to 25V, IO = 500 mA 0.8 mA VI = 10.6 to 23V, TJ = 25°C 0.8 mA IO = 5mA to 1A 0.5 mA ΔVO (1) ΔVO (1) Iq ΔIq Line regulation Load regulation Quiescent current Quiescent current change Supply voltage rejection VI = 11.5 to 21.5V, f = 120Hz, IO = 500mA 61 dB Vd Dropout voltage IO = 1A, TJ = 25°C 2 V eN Output noise voltage TA = 25°C, B =10Hz to 100kHz 10 µV/VO RO Output resistance f =1kHz 18 mΩ Isc Short circuit current VI = 35V, TA = 25°C 0.2 A Iscp Short circuit peak current TJ = 25°C 2.2 A -0.8 mV/°C SVR ΔVO/ΔT Output voltage drift 1. Load and line regulation are specified 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. 10/26 L78xxAB - L78xxAC Table 8. Symbol Electrical characteristics Electrical characteristics of L7812A (VI = 19 V, IO = 1 A, TJ = 0 to 150 °C (L7812AC), TJ = -40 to 125 °C (L7812AB), unless otherwise specified) Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C 11.75 12 12.25 V VO Output voltage IO = 5mA to 1A, PO ≤15W VI = 14.8 to 27V 11.5 12 12.5 V VI = 14.8 to 30V, IO = 500 mA 13 120 mV VI = 16 to 12V 16 120 mV VI = 16 to 12V, TJ = 25°C 6 60 mV VI = 14.5 to 27V, TJ = 25°C 13 120 mV IO = 5mA to 1A 25 100 mV IO = 5mA to 1.5A, TJ = 25°C 30 100 V IO = 250 to 750mA 10 50 V TJ = 25°C 4.4 6 mA 6 mA VI = 15 to 30V, IO = 500 mA 0.8 mA VI = 14.8 to 27V, TJ = 25°C 0.8 mA IO = 5mA to 1A 0.5 mA ΔVO (1) ΔVO (1) Iq ΔIq Line regulation Load regulation Quiescent current Quiescent current change Supply voltage rejection VI = 15 to 25V, f = 120Hz, IO = 500mA 60 dB Vd Dropout voltage IO = 1A, TJ = 25°C 2 V eN Output noise voltage TA = 25°C, B =10Hz to 100kHz 10 µV/VO RO Output resistance f =1kHz 18 mΩ Isc Short circuit current VI = 35V, TA = 25°C 0.2 A Iscp Short circuit peak current TJ = 25°C 2.2 A -1 mV/°C SVR ΔVO/ΔT Output voltage drift 1. Load and line regulation are specified 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. 11/26 Electrical characteristics Table 9. Symbol L78xxAB - L78xxAC Electrical characteristics of L7815A (VI = 23 V, IO = 1 A, TJ = 0 to 150 °C (L7815AC), TJ = -40 to 125 °C (L7815AB), unless otherwise specified) Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C 14.7 15 15.3 V VO Output voltage IO = 5mA to 1A, PO ≤15W VI = 17.9 to 30V 14.4 15 15.6 V VI = 17.9 to 30V, IO = 500 mA 13 150 mV VI = 20 to 26V 16 150 mV VI = 20 to 26V, TJ = 25°C 6 75 mV VI = 17.5 to 30V, TJ = 25°C 13 150 mV IO = 5mA to 1A 25 100 mV IO = 5mA to 1.5A, TJ = 25°C 30 100 V IO = 250 to 750mA 10 50 V TJ = 25°C 4.4 6 mA 6 mA VI = 17.5 to 30V, IO = 500 mA 0.8 mA VI = 17.5 to 30V, TJ = 25°C 0.8 mA IO = 5mA to 1A 0.5 mA ΔVO (1) ΔVO (1) Iq ΔIq Line regulation Load regulation Quiescent current Quiescent current change Supply voltage rejection VI = 18.5 to 28.5V, f = 120Hz, IO = 500mA 58 dB Vd Dropout voltage IO = 1A, TJ = 25°C 2 V eN Output noise voltage TA = 25°C, B =10Hz to 100kHz 10 µV/VO RO Output resistance f =1kHz 19 mΩ Isc Short circuit current VI = 35V, TA = 25°C 0.2 A Iscp Short circuit peak current TJ = 25°C 2.2 A -1 mV/°C SVR ΔVO/ΔT Output voltage drift 1. Load and line regulation are specified 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. 12/26 L78xxAB - L78xxAC Table 10. Symbol Electrical characteristics Electrical characteristics of L7824A (VI = 33 V, IO = 1 A, TJ = 0 to 150 °C (L7824AC), TJ = -40 to 125 °C (L7824AB), unless otherwise specified) Parameter Test conditions Min. Typ. Max. Unit 23.5 24 24.5 V 23 24 25 V VI = 27 to 38V, IO = 500 mA 31 240 mV VI = 30 to 36V 35 200 mV VI = 30 to 36V, TJ = 25°C 14 120 mV VI = 26.7 to 38V, TJ = 25°C 31 240 mV IO = 5mA to 1A 25 100 mV IO = 5mA to 1.5A, TJ = 25°C 30 100 V IO = 250 to 750mA 10 50 V TJ = 25°C 4.6 6 mA 6 mA VI = 27.3 to 38V, IO = 500 mA 0.8 mA VI = 27.3 to 38V, TJ = 25°C 0.8 mA IO = 5mA to 1A 0.5 mA VO Output voltage TJ = 25°C VO Output voltage IO = 5mA to 1A, PO ≤15W VI = 27.3 to 38V ΔVO (1) ΔVO (1) Iq ΔIq Line regulation Load regulation Quiescent current Quiescent current change Supply voltage rejection VI = 28 to 38V, f = 120Hz, IO = 500mA 54 dB Vd Dropout voltage IO = 1A, TJ = 25°C 2 V eN Output noise voltage TA = 25°C, B =10Hz to 100kHz 10 µV/VO RO Output resistance f =1kHz 20 mΩ Isc Short circuit current VI = 35V, TA = 25°C 0.2 A Iscp Short circuit peak current TJ = 25°C 2.2 A -1.5 mV/°C SVR ΔVO/ΔT Output voltage drift 1. Load and line regulation are specified 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. 13/26 Application information 6 Application information 6.1 Design consideration L78xxAB - L78xxAC The L78xxA Series of fixed voltage regulators are designed with Thermal Overload Protection that shuts down the circuit when subjected to an excessive power overload condition, internal short-circuit protection that limits the maximum current the circuit will pass, and output transistor safe-area compensation that reduces the output short-circuit current as the voltage across the pass transistor is increased. In many low current applications, compensation capacitors are not required. However, it is recommended that the regulator input be bypassed with capacitor if the regulator is connected to the power supply filter with long lengths, or if the output load capacitance is large. An input bypass capacitor should be selected to provide good high frequency characteristics to insure stable operation under all load conditions. A 0.33 µF or larger tantalum, mylar or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest possible leads directly across the regulators input terminals. Normally good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. The addition of an operational amplifier allows adjustment to higher or intermediate values while retaining regulation characteristics. The minimum voltage obtained with the arrangement is 2 V greater than the regulator voltage. The circuit of figure 6 can be modified to provide supply protection against short circuit by adding a short circuit sense resistor, RSC, and an additional PNP transistor. The current sensing PNP must be able to handle the short circuit current of the three terminal regulator Therefore a four ampere plastic power transistor is specified. Figure 8. DC parameter IO = VXX/R1+Id 14/26 L78xxAB - L78xxAC Figure 9. Application information DC parameter VO = 7 to 20V VI - VO ≥ 2V Figure 10. DC parameter VBEQ1 R1 = ______________ IREQ-(IQ1/βQ1) VBEQ1 IO = IREG + Q1 (IREG ______) R1 Figure 11. DC parameter 15/26 Package mechanical data 7 L78xxAB - L78xxAC 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. 16/26 L78xxAB - L78xxAC Package mechanical data TO-220 mechanical data Dim. mm. Min. Typ. inch. Max. Min. Typ. Max. A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107 0.70 0.019 0.027 D1 E 1.27 0.49 0.050 F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.067 F2 1.14 1.70 0.044 0.067 G 4.95 5.15 0.194 0.203 G1 2.4 2.7 0.094 0.106 H2 10.0 10.40 0.393 0.409 L2 16.4 0.645 L4 13.0 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 L9 3.5 3.93 0.137 0.154 DIA. 3.75 3.85 0.147 0.151 P011C 17/26 Package mechanical data L78xxAB - L78xxAC TO-220FP mechanical data Dim. mm. Min. A 4.40 Typ inch. Max. Min. Typ. Max. 4.60 0.173 0.181 B 2.5 2.7 0.098 0.106 D 2.5 2.75 0.098 0.108 E 0.45 0.70 0.017 0.027 F 0.75 1 0.030 0.039 F1 1.15 1.50 0.045 0.059 F2 1.15 1.50 0.045 0.059 G 4.95 5.2 0.194 0.204 G1 2.4 2.7 0.094 0.106 H 10.0 10.40 0.393 0.409 L2 L3 16 0.630 28.6 30.6 1.126 1.204 L4 9.8 10.6 0.385 0.417 L5 2.9 3.6 0.114 0.142 L6 15.9 16.4 0.626 0.645 L7 9 9.3 0.354 0.366 DIA. 3 3.2 0.118 0.126 7012510A-H 18/26 L78xxAB - L78xxAC Package mechanical data Figure 12. Drawing dimension D2PAK (type STD-ST) 0079457/L 19/26 Package mechanical data L78xxAB - L78xxAC Figure 13. Drawing dimension D2PAK (type WOOSEOK-Subcon.) 0079457/L 20/26 L78xxAB - L78xxAC Table 11. Package mechanical data D2PAK mechanical data Dim. Min. Type WOOSEOK-Subcon. mm. mm. Typ. Max. Min. Typ. Max. A 4.40 4.60 4.30 4.70 A1 0.03 0.23 0 0.20 b 0.70 0.93 0.70 0.90 b2 1.14 1.70 1.17 1.37 c 0.45 0.60 0.45 0.50 0.60 c2 1.23 1.36 1.25 1.30 1.40 D 8.95 9.35 9 9.20 9.40 D1 7.50 E 10 E1 8.50 e 7.50 10.40 9.80 10.20 7.50 2.54 2.54 e1 4.88 5.28 H 15 15.85 15 J1 2.49 2.69 2.20 2.60 L 2.29 2.79 1.79 2.79 L1 1.27 1.40 1 1.40 L2 1.30 1.75 1.20 1.60 R V2 Note: Type STD-ST 5.08 0.4 0° 15.30 15.60 0.30 8° 0° 3° The D2PAK package coming from the subcontractor Wooseok is fully compatible with the ST's package suggested footprint. 21/26 Package mechanical data L78xxAB - L78xxAC Figure 14. D2PAK footprint recommended data Table 12. Footprint data Values 22/26 Dim. mm. inch. A 12.20 0.480 B 9.75 0.384 C 16.90 0.665 D 3.50 0.138 E 1.60 0.063 F 2.54 0.100 G 5.08 0.200 L78xxAB - L78xxAC Package mechanical data Tape & reel D2PAK-P2PAK-D2PAK/A-P2PAK/A mechanical data mm. inch. Dim. Min. Typ. A Max. Min. Typ. 180 13.0 7.086 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 Max. 0.504 0.512 14.4 0.519 0.567 Ao 10.50 10.6 10.70 0.413 0.417 0.421 Bo 15.70 15.80 15.90 0.618 0.622 0.626 Ko 4.80 4.90 5.00 0.189 0.193 0.197 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 11.9 12.0 12.1 0.468 0.472 0.476 23/26 Order codes L78xxAB - L78xxAC 8 Order codes Table 13. Order codes Packaging Part number Output voltage TO-220 TO-220FP D2PAK L7805AB L7805ABV L7805ABP L7805ABD2T-TR 5V L7805AC L7805ACV L7805ACP L7805ACD2T-TR 5V L7806AB L7806ABV L7806ABD2T-TR 6V L7806AC L7806ACV L7806ACD2T-TR 6V L7808AB L7808ABV L7808ABD2T-TR 8V L7808AC L7808ACV L7808ACD2T-TR 8V L7809AB L7809ABV L7809ABD2T-TR 9V L7809AC L7809ACV L7809ACD2T-TR 9V L7812AB L7812ABV L7812ABD2T-TR 12 V L7812AC L7812ACV L7812ACD2T-TR 12 V L7815AB L7815ABV L7815ABD2T-TR 15 V L7815AC L7815ACV L7815ACD2T-TR 15 V L7824AB L7824ABV L7824ABD2T-TR 24 V L7824AC L7824ACV 24/26 24 V L78xxAB - L78xxAC Revision history 9 Revision history Table 14. Document revision history Date Revision Changes 21-Jun-2004 9 Document updating. 04-Aug-2006 10 Order codes updated and new template. 19-Jan-2007 11 D2PAK mechanical data has been updated and add footprint data. 07-Mar-2007 12 Update figure D2PAK 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. 25/26 L78xxAB - L78xxAC Please Read Carefully: 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 time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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