3-Terminal Positive Voltage Regulator

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1 3-Terminal Positive Voltage Regulator Product Description The Series of positive voltage regulators are inexpensive, easy-to-use devices suitable for a multitude of applications that require a regulated supply of up to 100mA. Like their higher-powered GS78xx Series cousins, these regulators feature internal current limiting and thermal shutdown making them remarkably rugged. No external components are required with the devices in many applications. These devices offer a substantial performance advantage over the traditional zener diode-resistor combination, as output impedance and quiescent current are substantially reduced. Features Wide Range of Available, Fixed Output Voltages Internal Short Circuit Current Limiting Internal Thermal Overload Protection No External Components Required Complementary Negative Regulators Offered (GS79Lxx Series) Available in ±5% Accuracy RoHS and Halogen Free Compliant and 100% Lead(Pb)-Free Applications Battery Powered Systems Portable Consumer Equipment Portable Computer Radio Control Systems Logic Systems Power Adapter Representative Schematic Diagram 15k Q1 Q3 Q5 Q10 Q11 Input Q12 3.8K Q4 Q6 5.0K 3.0 Output 0-25K 1.2K 1.9k 19k C 2.2K Q9 Z1 420 Q2 Q7 1.0K Q8 2.85K Ground 1

2 Packages & Pin Assignments YF (SOT-89) SF (SOP-8) NF (TO-92) PIN NO. GS78L05YF GS78L05YUF GS78L08YUF PIN NO. GS78L05SF GS78L08SF PIN NO. GS78L05NF GS78L08NF 1 V IN V OUT 1 V OUT 1 V OUT 2 GND GND 8 V IN 2 G ND 3 V OUT V IN 2,3,6,7 GND 3 V IN 4,5 NC Ordering Information *Request for other voltages, please contact factory directly. Marking Information 2

3 Absolute Maximum Ratings T A =+125ºC, unless otherwise noted.) Symbol Parameter Maximum Unit V IN Input Voltage 25 V SOT P D θ JA Power Dissipation SOP W TO SOT The Junction-To-Ambient Thermal Resistance SOP ºC/w TO T J Operating Junction Temperature Range -20 to +120 ºC T STG Storage Temperature Range -65 to +150 ºC GS78L05 Electrical Characteristics (V IN =10V, I OUT =40mA, C IN =0.33µ F, C OUT =0.1µ F, 0ºC <T J <+125ºC, unless otherwise noted.) Symbol Parameter Test Conditions Min Typ Max Unit V OUT Output Voltage T J =+25ºC V Reg LINE Reg LOAD V OUT I B I B V N RR Line Regulation Load Regulation Output Voltage Input Bias Current Input Bias Current Change Output Noise Voltage Ripple Rejection T J =+25ºC, I OUT =40mA 7.0V V IN 20V,8.0V V IN 20V T J =+25ºC, 1.0mA I OUT 100mA T J =+25ºC, 1.0mA I OUT 40mA 7.0V V IN 20V, 1.0mA I OUT 40mA V IN =10V, 1.0mA I OUT 70mA T J =+25ºC T J =+125ºC 8.0V V I 20V 1.0mA Io 40mA T A =+25ºC, 10Hz f 100kHz 40 µv I OUT =40mA, f=120hz, 8.0V V IN 18V, T J =+25ºC V ma ma db V IN -V OUT Dropout Voltage T J =+25ºC 1.7 V 3

4 GS78L08 Electrical Characteristics (V IN =14V, I OUT =40mA, C IN =0.33µ F, C OUT =0.1µ F, 0ºC <T J <+125ºC, unless otherwise noted.) Symbol Parameter Test Conditions Min Typ Max Unit V OUT Output Voltage T J =+25ºC V Reg LINE Reg LOAD V OUT I B I B V N RR Line Regulation Load Regulation Output Voltage Input Bias Current Input Bias Current Change Output Noise Voltage Ripple Rejection T J =+25ºC, I OUT =40mA 10.5V V IN 23V,11V V IN 23V T J =+25ºC, 1.0mA I OUT 100mA T J =+25ºC, 1.0mA I OUT 40mA 10.5V V IN 23V, 1.0mA I OUT 40mA V IN =14V, 1.0mA I OUT 70mA T J =+25ºC T J =+125ºC 11V V I 23V 1.0mA Io 40mA T A =+25ºC, 10Hz f 100kHz 40 µv I OUT =40mA, f=120hz, 8.0V V IN 18V, T J =+25ºC V ma ma db V IN -V OUT Dropout Voltage T J =+25ºC 1.7 V 4

5 Typical Performance Characteristics Dropout Characteristics Dropout Voltage versus Junction Temperature VO,OUTPUT VOLTAGE(V) Io=1.0mA Io=40mA GS78L05 V OUT =5.0V T J =25 Io=100mA V I,INPUT VOLTAGE(V) VI-VO,INPUT/OUTPUT DIFFERENTIAL VOLTAGE(V) Io=40mA I O =70mA Io=1.0mA Dropout of Regulation is defined as when Vo=2% of Vo T J,JUNCTION TEMPERATURE( ) Input Bias Current versus Ambient Temperature Input Bias Current versus Input Voltage VI-VO,INPUT/OUTPUT DIFFERENTIAL VOLTAGE(V) Io=40mA I O =70mA Io=1.0mA Dropout of Regulation is defined as when Vo=2% of Vo T J,JUNCTION TEMPERATURE( ) IIB,INPUT BIAS CURRENT(mA) GS78L05 V OUT =5.0V I O =40mA T J = V I,INPUT VOLTAGE(V) Maximum Average Power Dissipation versus Ambient Temperature TO-92 Type Package 10,000 PD,POWER DISSIPATION() No Heatsink R θja =200 /W P D(max) to 25 =625mW T A,AMBIENT TEMPERATURE( ) 5

6 Typical Applications Input GS78LXX Output Cin* 0.33uF Cout* A common ground is required between the input and the output voltages. * C IN is required if regulator is located an appreciable distance form power supply filter. **C OUT is not needed for stability, however, it does improve transient response. Design Considerations The GS78LXX Series of fixed voltage regulators are designed with Thermal Overload Protection that shuts down the circuit when subjected to an excessive power overload condition. Internal Short Circuit Protection Limits the maximum current the circuit will pass. In many low current applications, compensation capacitors are not required. However, it is recommended that the regulator input be bypassed with a capacitor if the regulator is connected to the power supply filter with long wire lengths, or if the output load capacitance is large. The input bypass capacitor should be selected to provide good high-frequency characteristics to insure stable operation under all load conditions. A 0.33 µf or larger tantalum, mylar, or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest possible leads directly across the regulators input terminals. Good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. Bypassing the output is also recommended. Current Regulator The GS78LXX regulators can also be used as a current source when connected as above. In order to minimize dissipation the GS78L05 is chosen in this application. Resistor R determines the current as follows: Iout = 5.0V R + I B I B =3.8mA over line and load changes For example, a 100mA current source would require R to be a 50Ω, 1/2 W resistor and the output voltage compliance would be the input voltage less 7V. Input GS78L05 R 0.33uF Iout Constant Current to Grounded Load Positive and Negative Regulator +Vi GS78LXX +Vo 0.33uF 0.1 uf -Vi 0.33uF GS79LXX 0.1 uf -Vo 6

7 Package Dimension SOP-8 PLASTIC PACKAGE D θ1 E1 PIN 1 MARKING A E1/2 A2 e E/2 b E θ1 h 0.1mm(max) c θ2 R1 R L L1 θ GAUGE PLANE L2 A1 SYMBOL Dimensions Millimeters Inches MIN MAX MIN MAX A A A b c D 4.90 (TYP).193 (TYP) E 6.00 (TYP).236 (TYP) E (TYP).154 (TYP) e 1.27 (TYP).050 (TYP) L L (TYP).041 (TYP) L (TYP).010 (TYP) R R h θ θ θ

8 SOT-89 PLASTIC PACKAGE D D1 A C H E E1 L B1 e e1 B Dimensions SYMBOL Millimeters Inches MIN MAX MIN MAX A B B C D D E E e 1.50 (TYP).059 (TYP) e (TYP).118 (TYP) H L

9 TO-92 PLASTIC PACKAGE Dimensions SYMBOL Millimeters Inches MIN MAX MIN MAX A A T d P P P F1,F h W W W W H H L D t t P P

10 Additional Information : 한국대리점 : 디웰전자 (Diwell Electronics Co., Ltd.) 경기도군포시당정동 358 군포창업보육센터 202호 202, Kunpo Business Incubator Center, 358, Dangjung-Dong, Gunpo-City, Gyeonggi-Do, South Korea Phone : ( ) Fax : ( ) 기술및구매문의 expoeb2@diwell.com, dsjeong@diwell.com

SINO SN78LXX SN78LXX Series 3-Terminal Positive Regulators

SINO SN78LXX SN78LXX Series 3-Terminal Positive Regulators Series 3-Terminal Positive Regulators Description The series of three terminal positive regulators is available with several fixed output voltages making them useful in a wide range of applications, When