L7805CV Positive voltage regulators 1.Features ■ Output current to 1.5 A ■ Output voltage of 5V ■ Thermal overload protection ■ Short circuit protection ■ Output transition SOA protection 2.Description The L7805CV of three-terminal positive regulators is available in TO-220 package, making it useful in a wide range of applications. These regulators can provide lacal on-card regulation, eliminating the distribu -tion 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 deliver over 1.5 A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents. Block diagram 56 1 L7805CV Positive Voltage Regulators Schematic diagram 2 L7805CV Positive Voltage Regulators 3.Maximum ratings Absolute maximum ratings Symbol Parameter Value V O= 5 V Unit 35 VI DC input voltage IO Output current Internally limited PD Power dissipation Internally limited TSTG Storage temperature range TOP Operating junction temperature range Note: V -65 to 150 °C °C L7805CV 0 to 150 Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. 4. Electrical characteristics Electrical characteristics of L7805CV (refer to the test circuits, TJ = 0 to 150 °C, VI = 10 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C 4.8 5 5.2 V VO Output voltage IO = 5 mA to 1 A, PO ≤15 W VI = 8 to 20 V 4.65 5 5.35 V ΔVO(1) VI = 7 to 25 V, TJ = 25°C 3 50 Line regulation VI = 8 to 12 V, TJ = 25°C 1 25 ΔVO(1) Load regulation Id ΔId ΔVO/ΔT Quiescent current Quiescent current change mV IO = 5 mA to 1.5 A, TJ = 25°C 100 IO = 250 to 750 mA, TJ = 25°C 25 TJ = 25°C 6 mV IO = 5 mA to 1 A 0.5 VI = 8 to 25 V 0.8 mA mA Output voltage drift IO = 5 mA Output noise voltage B =10 Hz to 100 kHz, TJ = 25°C Supply voltage rejection VI = 8 to 18 V, f = 120 Hz Vd Dropout voltage IO = 1 A, TJ = 25°C 2 RO Output resistance f = 1 kHz 17 mΩ Isc Short circuit current VI = 35 V, TJ = 25°C 0.75 A Iscp Short circuit peak current TJ = 25°C 2.2 A eN SVR 0.6 mV/°C 40 68 µV/VO dB 2.5 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. V 3 L7805CV Positive Voltage Regulators 5. Test circuits Figure 5. DC parameter 05 Figure 6. Load regulation 05 Figure 7. Ripple rejection 05 4 L7805CV Positive Voltage Regulators 6.Typical performance Dropout voltage vs junction temperature Supply voltage rejection vs frequency Output impedance vs frequency Peak output current vs input/output differential voltage Output voltage vs junction temperature Quiescent current vs junction temp. 5 L7805CV Positive Voltage Regulators Load transient response Line transient response Quiescent current vs input voltage Application circuits 05 1. Although no output capacitor is need for stability, it does improve transient response. 2. Required if regulator is locate an appreciable distance from power supply filter. 6 L7805CV Positive Voltage Regulators 7.Package mechanical data 7