Philips-CD-723-Integrated-Circuits 电路图 维修手册.pdf

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1、August 2007Rev. 161/52 L78xx L78xxC Positive voltage regulators Features Output current to 1.5 A Output voltages of 5; 5.2; 6; 8; 8.5; 9; 10; 12; 15; 18; 20; 24 V Thermal overload protection Short circuit protection Output transition SOA protection Description The L78xx series of three-terminal posi

2、tive regulators is available in TO-220, TO-220FP, TO-3 and D2PAK packages and 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 ty

3、pe 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 A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external com

4、ponents to obtain adjustable voltage and currents. TO-220FP D2PAK TO-220 TO-3 Table 1.Device summary Order codes L7805L7810C L7805CL7812C L7852CL7815C L7806CL7818C L7808CL7820C L7885CL7824C L7809C RadioFans.CN 收音机爱 好者资料库 L78xx - L78xxC 2/52 Contents 1Diagram . . . . . . . . . . . . . . . . . . . . .

5、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4Test circuits . . . .

6、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 7Pack

7、age mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 8Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 9Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8、. . . . 51 RadioFans.CN 收音机爱 好者资料库 L78xx - L78xxCList of figures 3/52 List of figures Figure 1.Block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2.Pin connections (top view) . . . . . . . . . . . . . . . . .

9、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 3.Schematic diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 4.Application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10、. . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 5.DC Parameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 6.Load regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11、 . . . . . . . . . . . . . . . . . . 9 Figure 7.Ripple rejection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 8.Dropout voltage vs junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12、. . . . 31 Figure 9.Peak output current vs input/output differential voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Figure 10.Supply voltage rejection vs frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Figure 11.Output voltage vs junctio

13、n temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Figure 12.Output impedance vs frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Figure 13.Quiescent current vs junction temp. . . . . . . . . . . . . . .

14、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Figure 14.Load transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Figure 15.Line transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15、 . . . . . . . . . . . . . . . . . 32 Figure 16.Quiescent current vs input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Figure 17.Fixed output regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16、. . . . . 32 Figure 18.Current regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Figure 19.Circuit for increasing output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Figure 2

17、0.Adjustable output regulator (7 to 30 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Figure 21.0.5 to 10 V Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 22.High current voltage regu

18、lator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 23.High output current with short circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 24.Tracking voltage regulator . . . . . . . . . . . . . . . . .

19、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Figure 25.Split power supply ( 15 V - 1 A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Figure 26.Negative output voltage circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20、. . . . . . . . . . . . . . . . . . 36 Figure 27.Switching regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Figure 28.High input voltage circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21、. . . . . . . . . . 36 Figure 29.High input voltage circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Figure 30.High output voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

22、 Figure 31.High input and output voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Figure 32.Reducing power dissipation with dropping resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Figure 33.Remote shutdown. . . . . . .

23、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Figure 34.Power AM modulator (unity voltage gain, IO 0.5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Figure 35.Adjustable output voltage with temperature compensation . . . . .

24、. . . . . . . . . . . . . . . . . . . 39 Figure 36.Light controllers (VOmin = VXX + VBE). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Figure 37.Protection against input short-circuit with high capacitance loads . . . . . . . . . . . . . . . . . . . 40 Figure 38

25、.Drawing dimension D2PAK (type STD-ST). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Figure 39.Drawing dimension D2PAK (type WOOSEOK-SUBCON.). . . . . . . . . . . . . . . . . . . . . . . . . 46 Figure 40.D2PAK footprint recommended data . . . . . . . . . . . . . . . . .

26、 . . . . . . . . . . . . . . . . . . . . . . . . 48 RadioFans.CN 收音机爱 好者资料库 List of tablesL78xx - L78xxC 4/52 List of tables Table 1.Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2.Absolute maximum ratings .

27、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 3.Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 4.Electrical characteristics of L7805 (refer to th

28、e test circuits, TJ = -55 to 150C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 11 Table 5.Electrical characteristics of L7806 (refer to the test circuits, TJ = -55 to 150C, VI = 11 V,IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . .

29、. . . . . . . 12 Table 6.Electrical characteristics of L7808 (refer to the test circuits, TJ = -55 to 150C, VI = 14V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . . 13 Table 7.Electrical characteristics of L7812 (refer to the test circuits, TJ = -55 to 150C, VI =

30、19 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 14 Table 8.Electrical characteristics of L7815 (refer to the test circuits, TJ = -55 to 150C, VI = 23 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 15 Table 9.Electrical chara

31、cteristics of L7818 (refer to the test circuits, TJ = -55 to 150C, VI = 26 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 16 Table 10.Electrical characteristics of L7820 (refer to the test circuits, TJ = -55 to 150C, VI = 28 V, IO = 500 mA, CI = 0.33 F, CO = 0.1

32、F unless otherwise specified) . . . . . . . . 17 Table 11.Electrical characteristics of L7824 (refer to the test circuits, TJ = -55 to 150C, VI = 33 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 18 Table 12.Electrical characteristics of L7805C (refer to the test

33、 circuits, TJ = 0 to 150C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 19 Table 13.Electrical characteristics of L7852C (refer to the test circuits, TJ = 0 to 150C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . .

34、 . . 20 Table 14.Electrical characteristics of L7806C (refer to the test circuits, TJ = 0 to 150C, VI = 11 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 21 Table 15.Electrical characteristics of L7808C (refer to the test circuits, TJ = 0 to 150C, VI = 14 V, IO =

35、 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 22 Table 16.Electrical characteristics of L7885C (refer to the test circuits, TJ = 0 to 150C, VI = 14.5 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . 23 Table 17.Electrical characteristic

36、s of L7809C (refer to the test circuits, TJ = 0 to 150C, VI = 15 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 24 Table 18.Electrical characteristics of L7810C (refer to the test circuits, TJ = 0 to 150C, VI = 15 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless ot

37、herwise specified) . . . . . . . . 25 Table 19.Electrical characteristics of L7812C (refer to the test circuits, TJ = 0 to 150C, VI = 19 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 26 Table 20.Electrical characteristics of L7815C (refer to the test circuits, T

38、J = 0 to 150C, VI = 23 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 27 Table 21.Electrical characteristics of L7818C (refer to the test circuits, TJ = 0 to 150C, VI = 26 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 28 Tabl

39、e 22.Electrical characteristics of L7820C (refer to the test circuits, TJ = 0 to 150C, VI = 28 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 29 Table 23.Electrical characteristics of L7824C (refer to the test circuits, TJ = 0 to 150C, VI = 33 V, IO = 500 mA, CI

40、= 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 30 Table 24.D2PAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Table 25.Footprint data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

41、. . . . . . . . . . . . . . . . . . . . . . . 48 Table 26.Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Table 27.Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

42、. . . . . . . . . . . . . . . . . 51 L78xx - L78xxCDiagram 5/52 1 Diagram Figure 1.Block diagram Pin configurationL78xx - L78xxC 6/52 2 Pin configuration Figure 2.Pin connections (top view) TO220FP TO-3 TO-220 D2PAK (Any Type) Figure 3.Schematic diagram L78xx - L78xxCMaximum ratings 7/52 3 Maximum r

43、atings Note:Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied Table 2.Absolute maximum ratings SymbolParameterValueUnit VIDC Input voltage for VO= 5 to 18 V35 V for VO= 20, 24 V40 IOOutput currentInternall

44、y Limited PDPower dissipationInternally Limited TSTGStorage temperature range-65 to 150C TOPOperating junction temperature range for L7800-55 to 150 C for L7800C0 to 150 Table 3.Thermal data SymbolParameterD2PAKTO-220TO-220FPTO-3Unit RthJCThermal resistance junction-case3554C/W RthJAThermal resistan

45、ce junction-ambient62.5506035C/W Maximum ratingsL78xx - L78xxC 8/52 Figure 4.Application circuits L78xx - L78xxCTest circuits 9/52 4 Test circuits Figure 5.DC Parameter Figure 6.Load regulation Test circuitsL78xx - L78xxC 10/52 Figure 7.Ripple rejection L78xx - L78xxCElectrical characteristics 11/52

46、 5 Electrical characteristics Table 4.Electrical characteristics of L7805 (refer to the test circuits, TJ = -55 to 150C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) SymbolParameterTest conditionsMin.Typ.Max.Unit VOOutput voltageTJ = 25C4.855.2V VOOutput voltage IO = 5

47、 mA to 1 A, PO 15 W VI = 8 to 20 V 4.6555.35V VO(1) 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. Line regulation VI = 7 to 25 V, TJ = 25C350 mV VI = 8

48、to 12 V, TJ = 25C125 VO(1)Load regulation IO = 5 mA to 1.5 A, TJ = 25C100 mV IO = 250 to 750 mA, TJ = 25C25 IdQuiescent currentTJ = 25C6mA IdQuiescent current change IO = 5 mA to 1 A0.5 mA VI = 8 to 25 V0.8 VO/TOutput voltage driftIO = 5 mA0.6mV/C eNOutput noise voltage B =10 Hz to 100 KHz, TJ = 25C

49、40V/VO SVRSupply voltage rejectionVI = 8 to 18 V, f = 120 Hz68dB VdDropout voltageIO = 1 A, TJ = 25C22.5V ROOutput resistancef = 1 KHz17m IscShort circuit currentVI = 35 V, TJ = 25C0.751.2A IscpShort circuit peak currentTJ = 25C1.32.23.3A Electrical characteristicsL78xx - L78xxC 12/52 Table 5.Electrical characteristics of L7806 (refer to the test circuits, TJ = -55 to 150C, VI = 11 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) SymbolParameterTest conditionsMin.Typ.Max.Unit VOOutput voltageTJ = 2