LTC1530CS8-1.9(RevA) View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC1530CS8-1.9
(Rev.:RevA)

High Power Synchronous Switching Regulator Controller

Linear Technology 

LTC1530

TYPICAL APPLICATIO S

LTC1530 Synchronous SEPIC Converter

VIN

4V TO 8V

+

CIN

RSENSE

0.02Ω

• L1A

1,2,3

7,8,9

Q1

N-MOSFET

CFLY

Q2

P-MOSFET VOUT

4,5,6

L1B

10,11,12 •

R3

3.09k

+

D2

1N4148

C2

10µF +

R4

R2

1k

10k

VOUT

5V

4A

COUT

C8 +

4.7µF

C7

3000pF

R8

33k

L2

10µH

D1

MBR0520

6

3

VIN

SHDN

5

SW

LT1317

1

VC

GND

4

C6

100pF

2

FB

R6

2.2M

R7

300k

R1

2.2k

R9

5.6Ω

+ C9

+

C3

4.7µF

10µF

C1

1000pF

RC

4.7k

CC

0.22µF

R5

20Ω

C4

0.1µF 1 5 6

PVCC IMAX IFB

G1 8

LTC1530-ADJ 7

G2

4

COMP

3

VSENSE

GND

2

CIN, COUT = 3× SANYO 10MV1200GX

CFLY = 2× SANYO 16SA150MK

L1 = COILTRONIX CTX02-13198-1

(L1A = 1,2,3 → 7,8,9; L1B = 10,11,12 → 4,5,6)

L2 = SUMIDA CD43-100

Q1 = SILICONIX N-MOSFET SI4420DY

Q2 = SILICONIX P-MOSFET SI4425DY

RSENSE = DALE LVR-3 3W

+

C5

4.7µF

1

8

LTC1693-3

7

3

4

1530 TA08a

Efficiency vs Load Current

100

90

VIN = 4V

80

70

VIN = 8V

TA = 25°C

60

50

40

30

20

10

0

0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

0.1

LOAD CURRENT (A)

1530 TA08b

1530fa

22

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