LT3782AIFE 데이터 시트보기 (PDF) - Linear Technology

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LT3782AIFE

2-Phase Step-Up DC/DC Controller

Linear Technology 

LT3782A

BLOCK DIAGRAM

VIN

CIN

20μF

VCC

27

R6

RUN

17

R8

REGULATOR

+

0.5V

VGBIAS = VCC – 1V AND CLAMPED AT 11V

+

A5

–

LOW POWER

SHUTDOWN

+

A11

+–

7V

+

A7

+–

2.44V

A4

+

2.5V

+

A12

BGATE1 –

PWM1

A3

SLOPE COMP

CH1

R3

A8

+

A6

VCC – 2.5V

L1

15μH

GBIAS1

22

GBIAS2

21

GBIAS

28

L2

15μH

C3

2μF

VOUT

D1

D2 +

COUT

100μF

RF1

RF2

A20

A1

ONE SHOT

SGATE1

2

DELAY

6

RSET

GBIAS1

A13

A14

A9

BLANKING

BGATE1

23

R1

50k SENSE1+

8

SENSE1–

9

VEE1

24

M1

R7

10Ω

RS1

C2

2nF

BGATE1

CL1

SGATE1 DELAY

SET

SLOPE

10

SYNC

5

SLOPE

COMP

RFREQ

RSET

11

OSC

+

C5

20pF

GND

4

SET

CH1

SR

CH2

SR

PWM2

CK Q

D

Q

LOGIC

A10

CL2

7

DCL

+

60mV

SGATE2

A15

A17

1

+

2.5V

BGATE2

+

A16

–

DELAY

ONE SHOT

SLOPE COMP

CH2

R4

GBIAS2

A18

A19

A2

BLANKING

BGATE2

20

R2

50k SENSE2+

13

SENSE2–

12

VEE2

19

M2

R9

10Ω

RS2

C4

2nF

GM

60mV

VC 15

R5

2k

C1

2000pF

D6

D7

D4

I1

10μA

SS

14

C7

10nF

FB

16

3782A BD

NOTE:

VREF

PACKAGE BOTTOM METAL PLATE (PIN 29)

IS FUSED TO CHIP DIE AGND

4V

3782af

7

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