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L78M05AC Dataheets PDF



Part Number L78M05AC
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description Precision 500 mA regulators
Datasheet L78M05AC DatasheetL78M05AC Datasheet (PDF)

L78MxxAB L78MxxAC Precision 500 mA regulators Datasheet − production data 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 TO-220 DPAK Description The L78MxxA series of three-terminal positive regulators is available in TO-220 and DPAK packages and with several fixed output voltages, making i.

  L78M05AC   L78M05AC


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L78MxxAB L78MxxAC Precision 500 mA regulators Datasheet − production data 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 TO-220 DPAK 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. Table 1. Device summary Part numbers L78M05AB L78M05AC L78M06AB L78M08AB L78M09AB L78M10AB L78M12AB L78M12AC L78M15AB L78M24AB L78M24AC May 2012 This is information on a product in full production. Doc ID 2147 Rev 13 1/31 www.st.com 31 http://www.Datasheet4U.com Contents L78MxxAB, L78MxxAC Contents 1 2 3 4 5 6 7 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Test circuits ............................................... 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Applications information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7.1 Design considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8 9 10 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2/31 Doc ID 2147 Rev 13 L78MxxAB, L78MxxAC Diagram 1 Di Figure 1. agram Block diagram Doc ID 2147 Rev 13 3/31 Pin configuration L78MxxAB, L78MxxAC 2 Figure 2. Pin configuration Pin connections (top view) TO-220 DPAK Figure 3. Schematic diagram 4/31 Doc ID 2147 Rev 13 L78MxxAB, L78MxxAC Maximum ratings 3 Maxi Table 2. Symbol VI IO PD TSTG TOP mum ratings Absolute maximum ratings Parameter DC input voltage Output current Power dissipation Storage temperature range for L78M00AC Operating junction temperature range for L78M00AB -40 to 125 for VO = 5 to 18 V for VO = 20, 24 V Value 35 V 40 Internally limited Internally limited -65 to 150 0 to 125 °C mA mW °C Unit Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Thermal data Parameter Thermal resistance junction-case Thermal resistance junction-ambient TO-220 5 50 DPAK 8 100 Unit °C/W °C/W Table 3. Symbol RthJC RthJA Figure 4. Application circuit Doc ID 2147 Rev 13 5/31 Test circuits L78MxxAB, L78MxxAC 4 Figure 5. Test circuits DC parameter Figure 6. Load regulation Figure 7. Ripple rejection 6/31 Doc ID 2147 Rev 13 L78MxxAB, L78MxxAC Electrical characteristics 5 Electrical characteristics Refer to the test circuits, VI = 10 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = -40 to 125 °C (AB), TJ = 0 to 125 °C (AC) unless otherwise specified. Table 4. Symbol VO VO ΔVO ΔVO Id ΔId ΔVO/ΔT SVR eN Vd Isc Iscp Electrical characteristics of L78M05XX Parameter Output voltage Output voltage Line regulation TJ = 25°C IO = 5 to 350 mA, VI = 7 to 20 V VI = 7 to 25 V, IO = 200 mA, TJ = 25°C VI = 8 to 25 V, IO = 200 mA, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Supply voltage rejection Output noise voltage Dropout voltage Short circuit current Short circuit peak current IO = 5 to 500 mA, TJ = 25°C IO = 5 to 200 mA, TJ = 25°C TJ = 25°C IO = 5 to 350 mA IO = 200 mA, VI = 8 to 25 V IO = 5 mA VI = 8 to 18 V, f = 120Hz, IO = 300mA, TJ = 25°C B =10Hz to 100kHz, TJ = 25°C TJ = 25°C TJ = 25°C, VI = 35 V TJ = 25°C 62 40 2 300 700 -0.5 Test conditions Min. 4.9 4.8 Typ. 5 5 Max. 5.1 5.2 100 mV 50 100 mV 50 6 0.5 mA 0.8 mV/°C dB µV V mA mA mA Unit V V Doc ID 2147 Rev 13 7/31 Electrical characteristics L78MxxAB, L78MxxAC Refer to the test circuits, VI = 11 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = -40 to 125 °C (AB), TJ = 0 to 125 °C (AC) unless otherwise.


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