LTC1539 데이터 시트보기 (PDF) - Linear Technology

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LTC1539

Dual High Efficiency/ Low Noise/ Synchronous Step-Down Switching Regulators

Linear Technology 

LTC1538-AUX/LTC1539

ABSOLUTE MAXIMUM RATINGS

Input Supply Voltage (VIN)....................... 36V to – 0.3V

Topside Driver Voltage (BOOST 1, 2) ...... 42V to – 0.3V

Peak Switch Voltage > 10µs (SW 1, 2) ... VIN + 5V to – 5V

EXTVCC Voltage........................................ 10V to – 0.3V

POR1, LBO Voltages ................................ 12V to – 0.3V

AUXFB Voltage ........................................ 20V to – 0.3V

AUXDR Voltage ........................................ 28V to – 0.3V

SENSE+ 1, SENSE+ 2, SENSE– 1, SENSE– 2,

VOSENSE2 Voltages ................... INTVCC + 0.3V to – 0.3V

VPROG1, VPROG2 Voltages .................... INTVCC to – 0.3V

PLL LPF, ITH1, ITH2 Voltages ................... 2.7V to – 0.3V

AUXON, PLLIN, SFB1,

RUN/SS1, RUN/SS2, LBI, Voltages ......... 10V to – 0.3V

Peak Output Current < 10µs (TGL1, 2, BG1, 2) ......... 2A

Peak Output Current < 10µs (TGS1, 2) .............. 250mA

INTVCC Output Current ........................................ 50mA

Operating Temperature Range

LTC1538-AUXCG/LTC1539CGW............ O°C to 70°C

LTC1538-AUXIG/LTC1539IGW .......... – 40°C to 85°C

Junction Temperature (Note 1) ............................ 125°C

Storage Temperature Range ................ – 65°C to 150°C

Lead Temperature (Soldering, 10 sec)................. 300°C

PACKAGE/ORDER INFORMATION

TOP VIEW

BOOST 1 1

RUN/SS1 2

SENSE+ 1 3

SENSE– 1 4

VPROG1 5

ITH1 6

COSC 7

SGND 8

SFB1 9

ITH2 10

VOSENSE2 11

SENSE– 2 12

SENSE+ 2 13

RUN/SS2 14

28 TGL1

27 SW1

26 VIN

25 BG1

24 INTVCC /5V

23 PGND

22 BG2

21 EXTVCC

20 SW2

19 TGL2

18 BOOST 2

17 AUXON

16 AUXFB

15 AUXDR

G PACKAGE

28-LEAD PLASTIC SSOP

TJMAX = 125°C, θJA = 95°C/ W

ORDER

PART NUMBER

LTC1538CG-AUX

LTC1538IG-AUX

Consult factory for Military grade parts.

TOP VIEW

RUN/SS1 1

SENSE+ 1 2

SENSE– 1 3

VPROG1 4

ITH1 5

POR1 6

COSC 7

SGND 8

LBI 9

LBO 10

SFB1 11

ITH2 12

VPROG2 13

VOSENSE2 14

SENSE– 2 15

SENSE+ 2 16

RUN/SS2 17

AUXDR 18

36 PLL LPF

35 PLLIN

34 BOOST 1

33 TGL1

32 SW1

31 TGS1

30 VIN

29 BG1

28 INTVCC/5V

27 PGND

26 BG2

25 EXTVCC

24 TGS2

23 SW2

22 TGL2

21 BOOST 2

20 AUXON

19 AUXFB

GW PACKAGE

36-LEAD PLASTIC SSOP

TJMAX = 125°C, θJA = 85°C/ W

ORDER

PART NUMBER

LTC1539CGW

LTC1539IGW

2

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