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L78M18 Dataheets PDF



Part Number L78M18
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description POSITIVE VOLTAGE REGULATORS
Datasheet L78M18 DatasheetL78M18 Datasheet (PDF)

L78M00 series Positive voltage regulators Feature summary ■ ■ ■ ■ ■ Output current to 0.5A Output voltages of 5; 6; 8; 9; 10; 12; 15; 18; 20; 24V Thermal overload protection Short circuit protection Output transition SOA protection TO-220 TO-220FP Description The L78M00 series of three-terminal positive regulators is available in TO-220, TO-220FP, DPAK and IPAK packages and with several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local .

  L78M18   L78M18


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L78M00 series Positive voltage regulators Feature summary ■ ■ ■ ■ ■ Output current to 0.5A Output voltages of 5; 6; 8; 9; 10; 12; 15; 18; 20; 24V Thermal overload protection Short circuit protection Output transition SOA protection TO-220 TO-220FP Description The L78M00 series of three-terminal positive regulators is available in TO-220, TO-220FP, DPAK and IPAK 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 shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can DPAK IPAK deliver over 0.5A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents. Schematic diagram November 2006 Rev. 8 1/30 www.st.com 30 L78M00 series Contents 1 2 3 4 5 6 7 8 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Test circuits ............................................... 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 2/30 L78M00 series Pin configuration 1 Figure 1. Pin configuration Pin connections (top view) TO-220 TO220FP DPAK IPAK Figure 2. Schematic diagram 3/30 Maximum ratings L78M00 series 2 Table 1. Symbol VI IO PD TSTG TOP Maximum ratings Absolute maximum ratings Parameter DC Input voltage Output current Power dissipation Storage temperature range Operating junction temperature range for VO= 5 to 18V for VO= 20, 24V Value 35 V 40 Internally Limited Internally Limited -65 to 150 0 to 150 mA mW °C °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 3 50 TO-220FP 5 60 DPAK 8 100 IPAK Unit °C/W °C/W Table 2. Symbol RthJC RthJA Figure 3. Application circuits 4/30 L78M00 series Test circuits 3 Figure 4. Test circuits DC Parameter Figure 5. Load regulation Figure 6. Ripple rejection 5/30 Electrical characteristics L78M00 series 4 Table 3. Symbol VO VO ∆VO ∆VO Id ∆Id ∆VO/∆T SVR eN Vd Isc Electrical characteristics Electrical characteristics of L78M05C (refer to the test circuits, TJ = 25°C, VI = 10V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) Parameter Output voltage Output voltage Line regulation IO = 5 to 350 mA, VI = 7 to 20 V VI = 7 to 25 V, IO = 200 mA VI = 8 to 25 V, IO = 200 mA Load regulation Quiescent current Quiescent current change Output voltage drift Supply voltage rejection Output noise voltage Dropout voltage Short circuit current VI = 35 V IO = 5 to 350 mA IO = 200 mA, VI = 8 to 25 V IO = 5 mA, TJ = 0 to 125°C VI = 8 to 18 V, f = 120Hz, IO = 300mA B =10Hz to 100KHz 62 40 2 300 -0.5 IO = 5 to 500 mA, TJ = 25°C IO = 5 to 200 mA, TJ = 25°C Test conditions Min. 4.8 4.75 Typ. 5 5 Max. 5.2 5.25 100 mV 50 100 mV 50 6 0.5 mA 0.8 mV/°C dB µV V mA mA Unit V V Table 4. Symbol VO VO ∆VO ∆VO Id ∆Id ∆VO/∆T SVR eN Vd Isc Electrical characteristics of L78M06C (refer to the test circuits, TJ = 25°C, VI = 11V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) Parameter Output voltage Output voltage Line regulation IO = 5 to 350 mA, VI = 8 to 21 V VI = 8 to 25 V, IO = 200 mA VI = 9 to 25 V, IO = 200 mA Load regulation Quiescent current Quiescent current change Output voltage drift Supply voltage rejection Output noise voltage Dropout voltage Short circuit current VI = 35 V IO = 5 to 350 mA IO = 200 mA, VI = 9 to 25 V IO = 5 mA, TJ = 0 to 125°C VI = 9 to 19 V, f = 120Hz, IO = 300mA B =10Hz to 100KHz 59 45 2 270 -0.5 IO = 5 to 500 mA, TJ = 25°C IO = 5 to 200 mA, TJ = 25°C Test conditions Min. 5.75 5.7 Typ. 6 6 Max. 6.25 6.3 100 mV 50 120 mV 60 6 0.5 mA 0.8 mV/°C dB µV V mA mA Unit V V 6/30 L78M00 series Electrical characteristics Table 5. Symbol VO VO ∆VO ∆VO Id ∆Id ∆VO/∆T SVR eN Vd Isc Electrical characteristics of L78M08C (refer to the test circuits, TJ = 25°C, VI = 14V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) Parameter Output voltage Output voltage Line regulation IO = 5 to 350.


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