OBSOLETE - PART DISCONTINUED

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Alexandra Elisabeth Douglas
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1 General Description The series are three terminal positive regulators designed for a wide variety of applications including local, on-card regulation. The are complete with internal current limiting, thermal shutdown protection, and safe-area compensation which make them virtually immune from output overload. If adequate heat sinking are provided, these regulators can deliver output currents up to 1A. The are available in TO--3 and TO-5- (1) packages. Features Output Current up to 1A Fixed Output oltages of 5, 8, 9, 1 and 15 Output oltage Accuracy of ±4% over the Full Temperature Range Internal Short Circuit Current Limiting Internal Thermal Overload Protection Output Transistor Safe-area Protection Applications High Efficiency Linear Regulator Post Regulation for Switching Supply Microprocessor Power Supply Mother Board TO--3 TO-5- (1) Figure 1. Package Types of 1

2 Pin Configuration T Package (TO--3) D Package (TO-5- (1) ) 3 OUTPUT GND 3 OUTPUT GND 1 INPUT 1 INPUT Figure. Pin Configuration of (Top iew) Pin Description Pin Number Pin Name Function 1 INPUT oltage Input GND Ground 3 OUTPUT oltage Output

3 Functional Block Diagram 1 INPUT Q9 R9 Q14 R16 Q1 D1 Zener Q4 R1 Q18 C1 R R1 R1 R17 R3 Q1 Q3 Q4 Q6 R3 Q7 Q1 Q11 R7 Q16 Q R18 R 3 OUTPUT R4 R14 R5 Q8 R11 R15 Q Q5 R6 Q13 Q15 C Q3 R19 Q19 Q1 Q17 Q R R8 R1 R13 GND Figure 3. Functional Block Diagram of 3

4 Ordering Information Circuit Type Output oltage 5: 5 8: 8 9: 9 1: 1 15: 15 - E1: Lead Free TR: Tape and Reel Blank: Tube Package T: TO--3 D: TO-5- (1) Package Temperature Range Part Number Marking ID Packing Type T-E1 T-E1 Tube AS788T-E1 AS788T-E1 Tube TO--3-4 to 15 o C AS789T-E1 AS789T-E1 Tube AS781T-E1 AS781T-E1 Tube AS7815T-E1 AS7815T-E1 Tube D-E1 D-E1 Tube DTR-E1 D-E1 Tape & Reel AS788D-E1 AS788D-E1 Tube AS788DTR-E1 AS788D-E1 Tape & Reel TO-5- (1) -4 to 15 o C AS789D-E1 AS789D-E1 Tube AS789DTR-E1 AS789D-E1 Tape & Reel AS781D-E1 AS781D-E1 Tube AS781DTR-E1 AS781D-E1 Tape & Reel AS7815D-E1 AS7815D-E1 Tube AS7815DTR-E1 AS7815D-E1 Tape & Reel BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. 4

5 Absolute Maximum Ratings (Note 1) Parameter Symbol alue Unit Input oltage IN 36 Lead Temperature (Soldering, 1sec) T LEAD 6 o C Power Dissipation P D Internally Limited W Operating Junction Temperature T J 15 o C Storage Temperature Range T STG -65 to 15 o C Thermal Resistance θ TO--3 6 JA TO-5- (1) 1 o C/W ESD (Human Body Model) ESD 3 ESD (Machine Model) ESD 4 Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Recommended Operating Conditions Parameter Symbol Min Max Unit 5 Input oltage AS788 5 AS789 IN 5 AS781 3 AS Operating Junction Temperature Range T J o C 5

6 Electrical Characteristics ( IN =1, I OUT =1A, T J =-4 to 15 o C, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit Output oltage OUT I OUT =5mA to 1A, IN =7.5 to, P D 15W T J =5 o C Line Regulation RLINE IN =7.5 to, I OUT =1A, T J =5 o C 7 5 m Load Regulation RLOAD IN =1, I OUT =5mA to 1A, T J =5 o C 5 1 m Quiescent Current I Q IN =1, I OUT = 3. 6 ma Quiescent Current Change I IN =8 to 5, I OUT =5mA, T J =5 o C.3.8 Q I OUT =5mA to 1A, T J =5 o C.8.5 Ripple Rejection PSRR IN =8 to 18, f=1hz, I OUT =5mA 73 db Dropout oltage DROP OUT =1%, I OUT =1A, T J =5 o C Output Noise oltage N O f=1hz to 1kHz, TA =5 o C 1 µ/ O Output Resistance R O f=1khz 1 mω Short Circuit Current I SC IN =35, T A =5 o C. A Peak Output Current I PK IN =1, T J =5 o C. A Output oltage OUT / T.4 m/ o C Temperature Coefficient ( OUT / OUT )/ T 8 ppm/ o C AS788 ( IN =14, I OUT =1A, T J =-4 to 15 o C, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit Output oltage OUT I OUT =5mA to 1A, IN =1.6 to 3, P D 15W T J =5 o C Line Regulation RLINE IN =1.6 to 3, I OUT =1A, T J =5 o C 1 8 m Load Regulation RLOAD IN =14, I OUT =5mA to 1A, T J =5 o C 5 1 m Quiescent Current I Q IN =14, I OUT = 3. 6 ma Quiescent Current Change I IN =8 to 5, I OUT =5mA, T J =5 o C.8.4 Q I OUT =5mA to 1A, T J =5 o C.1.5 Ripple Rejection PSRR IN =11.5 to 1.5, f=1hz, I OUT =5mA ma ma 6 db Dropout oltage DROP OUT =1%, I OUT =1A, T J =5 o C Output Noise oltage N O f=1hz to 1kHz, TA =5 o C 1 µ/ O Output Resistance R O f=1khz 1 mω Short Circuit Current I SC IN =35, T A =5 o C. A Peak Output Current I PK IN =14, T J =5 o C. A Output oltage OUT / T.64 m/ o C Temperature Coefficient ( OUT / OUT )/ T 8 ppm/ o C 6

7 Electrical Characteristics (Continued) AS789 ( IN =15, I OUT =1A, T J =-4 to 15 o C, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit Output oltage OUT I OUT =5mA to 1A, IN =11.5 to 3, P D 15W T J =5 o C Line Regulation RLINE IN =11.5 to 3, I OUT =1A, T J =5 o C 1 9 m Load Regulation RLOAD IN =15, I OUT =5mA to 1A, T J =5 o C 5 1 m Quiescent Current I Q IN =15, I OUT = 3. 6 ma Quiescent Current Change I Q T J =5 o C IN =11.5 to 3, I OUT =5mA,.8.4 I OUT =5mA to 1A, T J =5 o C.1.5 Ripple Rejection PSRR IN =11.5 to 1.5, f=1hz, I OUT =5mA AS781 ( IN =19, I OUT =1A, T J =-4 to 15 o C, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit Output oltage OUT I OUT =5mA to 1A, IN =14.8 to 7, P D 15W T J =5 o C Line Regulation RLINE IN =14.8 to 7, I OUT =1A, T J =5 o C 16 1 m Load Regulation RLOAD IN =19, I OUT =5mA to 1A, T J =5 o C 5 1 m Quiescent Current I Q IN =19, I OUT = ma Quiescent Current Change I IN =15 to 3, I OUT =5mA, T J =5 o C.3.8 Q I OUT =5mA to 1A, T J =5 o C.8.5 Ripple Rejection PSRR IN =15 to 5, f=1hz, I OUT =5mA 6 db Dropout oltage DROP OUT =1%, I OUT =1A, T J =5 o C Output Noise oltage N O f=1hz to 1kHz, TA =5 o C 1 µ/ O Output Resistance R O f=1khz 11 mω Short Circuit Current I SC IN =35, T A =5 o C. A Peak Output Current I PK IN =19, T J =5 o C. A Output oltage OUT / T.96 m/ o C Temperature Coefficient ( OUT / OUT )/ T 8 ppm/ o C ma 61 db Dropout oltage DROP OUT =1%, I OUT =1A, T J =5 o C Output Noise oltage N O f=1hz to 1kHz, T A =5 o C 1 µ/ O Output Resistance R O f=1khz 1 mω Short Circuit Current I SC IN =35, T A =5 o C. A Peak Output Current I PK IN =15, T J =5 o C. A Output oltage OUT / T.7 m/ o C Temperature Coefficient ( OUT / OUT )/ T 8 ppm/ o C ma 7

8 Electrical Characteristics (Continued) AS7815 ( IN =3, I OUT =1A, T J =-4 to 15 o C, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit Output oltage OUT I OUT =5mA to 1A, IN =17.9 to 3, P D 15W T J =5 o C Line Regulation RLINE IN =17.9 to 3, I OUT =1A, T J =5 o C m Load Regulation RLOAD IN =3, I OUT =5mA to 1A, T J =5 o C 5 1 m Quiescent Current I Q IN =3, I OUT = ma Quiescent Current Change I IN =17.5 to 3, I OUT =5mA, T J =5 o C.3.8 Q I OUT =5mA to 1A, T J =5 o C.8.5 Ripple Rejection PSRR IN =18.5 to 8.5, f=1hz, I OUT =5mA ma 58 db Dropout oltage DROP OUT =1%, I OUT =1A, T J =5 o C Output Noise oltage N O f=1hz to 1kHz, TA =5 o C 1 µ/ O Output Resistance R O f=1khz 1 mω Short Circuit Current I SC IN =35, T A =5 o C. A Peak Output Current I PK IN =3, T J =5 o C. A Output oltage OUT / T 1. m/ o C Temperature Coefficient ( OUT / OUT )/ T 8 ppm/ o C 8

9 Typical Performance Characteristics Peak Output Current (A) T C = -4 o C T C = 5 o C T C = 15 o C Output oltage () IN =1 I OUT =1mA IN - OUT () Junction Temperature ( o C) Figure 4. Peak Output Current vs. Input/Output Differential oltage Figure 5. Output oltage vs. Junction Temperature 6 1 Quiescent Current (ma) I OUT = IN =1 AS781 IN =19 AS7815 IN =3 Ripple Rejection (db) Junction Temperature ( o C) 1 1 1k 1k 1k 1M Frequency (Hz) Figure 6. Quiescent Current vs. Junction Temperature Figure 7. Ripple Rejection vs. Frequency 9

10 Typical Performance Characteristics (Continued) Package: TO--3 Heatsink Size: 45*43 mm Dropout oltage () I OUT =1mA I OUT =5mA I OUT =1A Power Dissipation (W) Junction Temperature ( o C) Case Temperature ( o C) Figure 8. Dropout oltage vs. Junction Temperature Figure 9. Power Dissipation vs. Case Temperature Package: TO-5- (1) Heatsink Size: 45*43 mm 5 Power Dissipation (W) Output oltage () IN =1, I OUT =5mA C IN =.33µF, C OUT =.1µF Case Temperature ( o C) Junction Temperature ( o C) Figure 1. Power Dissipation vs. Case Temperature Figure 11. Thermal Shutdown Protection 1

5A OUT (5m/Div) -5-1 -15 OUT (1m/Div) 1-1 - Time (1µs/Div) Time (4µs/Div)

11 Typical Performance Characteristics (Continued) 5 IN (5/Div) 15 1 I OUT (1A/Div) 1-1.5A OUT (5m/Div) OUT (1m/Div) Time (1µs/Div) Time (4µs/Div) Figure 1. Line Transient (Conditions: I OUT =5mA, C OUT =.1µF) Figure 13. Load Transient (Conditions: IN =1, C IN =.33µF, C OUT =.1µF) 11

12 Typical Application IN INPUT OUTPUT OUT.33µF GND.1µF Figure 14. Typical Application of 1

13 Mechanical Dimensions TO--3 Unit: mm(inch) 9.66(.38) 1.66(.4) 3.56(.14) 4.6(.16).58(.1) 3.38(.133).55(.) 1.35(.53) 1.85(.73).(.8) 1.5(.59) 8.5(.335) 9.5(.375) 7.88(1.98) 3.8(1.19) 14.3(.56) 16.51(.65) (.14) 4.8(.19).8(.8).88(.113) (.46) 1.76(.69).381(.15) 6.813(.3) 8.763(.345) 6.54(.1).381(.15).54(.1).356(.14).46(.16) 13

14 Mechanical Dimensions (Continued) TO-5- (1) Unit: mm(inch) 1.35(.53) 1.65(.65) 6.35(.5) 6.65(.6) 5.(.5) 5.4(.13).43(.17).58(.3).(.87).4(.94) 4.3(.169) 5.4(.1) 9.5(.374) 9.9(.39).6(.4).9(.35).3TYP 4.5(.177) 4.7(.165).(.).17(.5) 5.7(.8).9(.35).5(.).7(.8) 1.4(.55) 1.78(.7) (.17).58(.3) 5.4(.13) 5.7(.4).55(.1).9(.114) 3.8REF(.15REF) 4.8(.189) 6.5(.56) 14

http://www.bcdsemi.com IMPORTANT NOTICE reserves the right to make changes without further notice to any products or specifications herein.

15 IMPORTANT NOTICE reserves the right to make changes without further notice to any products or specifications herein. does not assume any responsibility for use of any its products for any particular purpose, nor does assume any liability arising out of the application or use of any its products or circuits. does not convey any license under its patent rights or other rights nor the rights of others. MAIN SITE - Wafer Fab Shanghai SIM- 8, Yi Shan Road, Shanghai 33, China Tel: , Fax: IC Design Group Advanced Analog Circuits (Shanghai) Corporation 8F, Zone B, 9, Yi Shan Road, Shanghai 33, China Tel: , Fax: REGIONAL SALES OFFICE Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office Room E, 5F, Noble Center, No.16, 3rd Fuzhong Road, Futian District, Shenzhen 5186, China Tel: Fax: Taiwan Office BCD Semiconductor (Taiwan) Company Limited 4F, 98-1, Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: Fax: USA Office BCD Semiconductor Corporation 39 Huntwood Ave. Hayward, CA 94544, U.S.A Tel : Fax:

3-TERMINAL POSITIVE LINEAR REGULATOR General Description. Features. Applications

3-TERMINAL POSITIVE LINEAR REGULATOR General Description. Features. Applications General Description The series are three terminal positive regulators with several fixed output voltages. These regulators can provide local on card regulation, eliminating the distribution problems associated