3

EL7564C

Monolithic 4 Amp DC:DC Step-down Regulator

Typical Application Diagrams (Continued)

Closed Loop AC Electrical Characteristics

Parameter

Description

Conditions

Min

Typ

Max

Unit

Oscillator Initial Accuracy

105

117

130

kHz

Minimum Oscillator Sync Width

25

ns

Soft Start Slope

0.5

V/ms

FET Break Before Make Delay

15

ns

High Side FET Minimum On Time

150

ns

Maximum Duty Cycle

95

%

EL7564CRE

(28-Pin HTSSOP)

1

2

3

4

16

15

14

13

5

6

7

12

11

9

8

10

20

19

18

17

24

23

22

21

28

27

26

25

0.22µF

22

Ω

2.2nF

5V

3.3V,

4A

2.37k

Ω

1k

Ω

330µF

0.22µF

4.7µH

VREF

SGND

COSC

VDD

VTJ

PGND

PGND

PGND

PGND

VIN

EN

FB

PG

VDRV

VHI

LX

LX

LX

LX

LX

2.2nF

R4

C3

C2

C6

D1

L1

C7

R2

C10

R1

VIN

NC

STP

STN

LX

NC

PGND

PGND

0.1µF

390pF

C5

C4

330µF

For the package information, please refer to the Elantec website at http://www.elantec.com/pages/package_outline.html