LT3797

2

3797f

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

ISN1.......................................................ISP1-1.5V, 100V

ISN2.......................................................ISP2-1.5V, 100V

ISN3.......................................................ISP3-1.5V, 100V

FBH1 ...................................................... ISP1 ±6V, 100V

FBH2 ...................................................... ISP2 ±6V, 100V

FBH3 ...................................................... ISP3 ±6V, 100V

CTRL1, CTRL2, CTRL3, FLT1, FLT2, FLT3...................12V

RT ............................................................................1.5V

SENSEP1, SENSEP2, SENSEP3, SENSEN1,

SENSEN2, SENSEN3, .............................................±0.3V

SW1, SW2, BOOST, TG1, TG2, TG3, GATE1,

GATE2, GATE3 .................................................. (Note 2)

Operating Ambient Temperature Range

(Note 3)...................................................... –40 to 125°C

Maximum Junction Temperature .......................... 125°C

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

(Note 1)

16

15

17

19

TOP VIEW

53

GND

UKG PACKAGE

VARIATION: UKG52(47)

52-LEAD (7mm

× 8mm) PLASTIC QFN

20 21 22 23 24 25 26

51

52

50 49 48 47 46 45 44 43 42 41

33

35

36

37

38

40

8

7

6

5

4

3

2

1

FLT1

FLT2

FLT3

PWM1

PWM2

PWM3

CTRL1

CTRL2

CTRL3

RT

SYNC

TG1

VC3

FBH3

ISP3

ISN3

TG3

TG2

ISN2

ISP2

FBH2

VC2

SS2

32

31

30

28

27

9

10

11

12

14

EXPOSED PAD (PIN 53) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3797EUKG#PBF

LT3797EUKG#TRPBF

LT3797UKG

52-Lead (7mm

× 8mm) Plastic QFN

–40°C to 125°C

LT3797IUKG#PBF

LT3797IUKG#TRPBF

LT3797UKG

52-Lead (7mm

× 8mm) Plastic QFN

–40°C to 125°C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

Consult LTC Marketing for information on non-standard lead based finish parts.