3

Date: 2/1/05

SP6654 High Efficiency 800mA Synchronous Buck Regulator

© Copyright 2005 Sipex Corporation

the full operating temperature range, unless otherwise specified.

ELECTRICAL CHARACTERISTICS

R

E

T

E

M

A

R

A

PN

I

MP

Y

TX

A

MS

T

I

N

US

N

O

I

T

I

D

N

O

C

t

u

o

k

c

o

L

e

g

a

t

l

o

v

r

e

d

n

U

O

L

V

U

V

,

d

l

o

h

s

e

r

h

T

N

I

g

n

il

l

a

f

5

5

.

20

7

.

25

8

.

2

V

♦

V

=

0

D

,

V

0

=

1

D

N

I

0

7

.

25

8

.

20

0

.

3

♦

V

=

1

D

N

I

V

0

=

0

D

,

5

8

.

20

0

.

35

1

.

3

♦

V

=

1

D

N

I

V

=

0

D

,

N

I

s

i

s

e

r

e

t

s

y

h

O

L

V

U0

4V

mT

B

M

A

C

°

7

2

=

e

g

a

t

l

o

V

t

u

p

t

u

O

w

o

L

D

G

R

W

P4

.

0V

N

I

I

,

V

3

.

3

=

K

N

I

S

A

m

1

=

t

n

e

r

r

u

C

e

g

a

k

a

e

L

D

G

R

W

P1

A

µ

♦

V

6

.

3

=

D

G

R

W

P

V

d

l

o

h

s

e

r

h

T

g

n

i

s

i

R

D

G

R

W

P6

-%

,

%

6

-

e

g

a

t

l

o

V

t

e

S

B

F

T

B

M

A

C

°

7

2

=

s

i

s

i

r

e

t

s

y

H

D

G

R

W

P0

8V

mT

B

M

A

C

°

7

2

=

t

n

e

r

r

u

C

e

g

a

k

a

e

L

0

D

,

1

D1

0

0

5A

n

♦

e

g

a

t

l

o

V

d

l

o

h

s

e

r

h

T

t

u

p

n

I

0

D

,

1

D

0

6

.

00

9

.

0

V

♦

n

o

i

t

i

s

n

a

r

T

w

o

L

o

t

h

g

i

H

5

2

.

18

.

1

♦

n

o

i

t

i

s

n

a

r

T

h

g

i

H

o

t

w

o

L

t

n

e

r

r

u

C

e

g

a

k

a

e

L

B

F1

0

0

1A

nV

1

=

B

F

D1

D0

00

Shutdown. All internal circuitry is disabled and the power switches are opened.

01

Device enabled, falling UVLO threshold =2.70V

10

Device enabled, falling UVLO threshold =2.85V

11

Device enabled, falling UVLO threshold =3.00V

Table 1. Operating Mode Definition