78L05 Description This series of fixed-voltage monolithicintegrated-circuit voltage regulators is designed for a wide range of applications. These applications include on-card regulation for elimination of noise and distribution problems associated with single-point regulation. In addition, they can be used with power-pass elements to make high-current voltage regulators. Each of these regulators can deliver up to100 mA of output current. The internal limiting and termal shutdown features of these regulators make them essentially immune to overload. When used as a replacement for a Zener diode-resistor combination, an effective improvement in output impedance can be obtained together with lower-bias current. Features Output current in excess of 100 mA No external components required I nternal short circuit current limiting Internal thermal overload protection Package TO-92 (top view Available in either 5% selections Package Internal Block Digram OC I BEIJING ESTEK ELECTRONICS CO.,LTD 1 78L05 Absolute Maximum Ratings Maximum Input Voltage: 30V Operation Junction Temperature Range: -40 ℃ to 125 ℃ Electrical Characteristics (Vin = 10V, Io =40mA , Ci=0.33µF, Co=0.1µF ,Tj = +25° C , unless otherwise noted) Characteristics Symbol Output Voltage Vo Line Regulation ∆Vv Load Regulation Test Condition 7.0V≤Vin≤20V; 1.0mA≤Io≤40mA 1.0mA≤Io≤70mA 7.0V≤Vin≤20V 8.0V≤Vin≤20V 1.0mA ≤Io≤100mA ∆Vi 1.0mA ≤Io≤40mA Quiescent Current Ib Quiescent Current Change ∆Ib 8.0V≤Vin≤20V 1.0mA ≤Io≤40mA min max 4.85 5.15 4.85 5.15 - 135 90 54 27 5.8 - 1.4 0.09 Unit V mV mV mA mA Typical Applications Circuit VI 78L05 VO 0.1 μF 0.33 μF Figure 1. Fixed-Output Regulator BEIJING ESTEK ELECTRONICS CO.,LTD 2 78L05 IN + OUT 78L05 VI COM G IL – –VO Figure 2. Positive Regulator in Negative Configuration (VI Must Float) Input Output 78L05 R1 IO 0.33 μF 0.1 μF R2 Figure 3. Adjustable-Output Regulator Ordering Information ORDERING NUM BER 78L05 Address : P AC K AGE TO –92 MARKING ET78L05 6A06--6A07 Rm 6A07,Changyin Office Building ,No.88,Yong Ding Road,Hai Dian District ,Beijing Postalcode:100039 Tel: 86-010-58895780 / 81 / 82 / 83 / 84 Fax : 010-58895793 Http://www.estek.com.cn Email:[email protected] REV No:01-060828 BEIJING ESTEK ELECTRONICS CO.,LTD 3