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L7824 Dataheets PDF



Part Number L7824
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description Positive voltage regulators
Datasheet L7824 DatasheetL7824 Datasheet (PDF)

L78 Datasheet Positive voltage regulator ICs TO-220 DPAK TO-220FP D²PAK Features • Output current up to 1.5 A • Output voltages of 5; 6; 8; 8.5; 9; 12; 15; 18; 24 V • Thermal overload protection • Short circuit protection • Output transition SOA protection • 2 % output voltage tolerance (A version) • Guaranteed in extended temperature range (A version) Description The L78 series of three-terminal positive regulators is available in TO-220, TO-220FP, D²PAK and DPAK packages and several fixed o.

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L78 Datasheet Positive voltage regulator ICs TO-220 DPAK TO-220FP D²PAK Features • Output current up to 1.5 A • Output voltages of 5; 6; 8; 8.5; 9; 12; 15; 18; 24 V • Thermal overload protection • Short circuit protection • Output transition SOA protection • 2 % output voltage tolerance (A version) • Guaranteed in extended temperature range (A version) Description The L78 series of three-terminal positive regulators is available in TO-220, TO-220FP, D²PAK and DPAK 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 problems associated with single point regulation. Each type embeds 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. Maturity status link L78 DS0422 - Rev 36 - September 2018 For further information contact your local STMicroelectronics sales office. www.st.com 1 Diagram Figure 2. Block diagram L78 Diagram GAMG220920161000MT DS0422 - Rev 36 page 2/55 2 Pin configuration Figure 3. Pin connections (top view) L78 Pin configuration TO-220 TO-220FP D²PAK Figure 4. Schematic diagram DPA K GAMG220920161001MT DS0422 - Rev 36 GAMG220920161002MT page 3/55 L78 Maximum ratings 3 Maximum ratings Table 1. Absolute maximum ratings Symbol Parameter VI DC input voltage IO PD TSTG Output current Power dissipation Storage temperature range TOP Operating junction temperature range for VO= 5 to 18 V for VO= 20, 24 V for L78xxC, L78xxAC for L78xxAB Value Unit 35 V 40 Internally limited Internally limited -65 to 150 °C 0 to 125 °C -40 to 125 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. Thermal data Symbol RthJC RthJA Parameter Thermal resistance junction-case Thermal resistance junction-ambient D²PAK 3 62.5 DPAK 8 100 TO-220 5 50 TO-220FP 5 60 Unit °C/W °C/W Figure 5. Application circuits DS0422 - Rev 36 GAMG220920161003MT page 4/55 4 Test circuits Figure 6. DC parameter L78 Test circuits Figure 7. Load regulation GAMG220920161004MT Figure 8. Ripple rejection GAMG220920161005MT DS0422 - Rev 36 GAMG220920161006MT page 5/55 L78 Electrical characteristics 5 Electrical characteristics VI = 10 V, IO = 1 A, TJ = 0 to 125 °C (L7805AC), TJ = -40 to 125 °C (L7805AB), unless otherwise specified. Symbol VO VO VO ∆VO (1) ∆VO (1) Iq Parameter Output voltage Output voltage Output voltage Line regulation Load regulation Quiescent current Table 3. Electrical characteristics of L7805A Test conditions TJ = 25 °C IO = 5 mA to 1 A, VI = 7.5 to 18 V IO = 1 A, VI = 18 to 20 V, TJ = 25.


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