3

ã 2000 Semtech Corp.

www.semtech.com

SC1175

POWER MANAGEMENT

Electrical Characteristics (Cont.)

R

E

T

E

M

A

R

A

PS

N

O

I

T

I

D

N

O

CN

I

MP

Y

TX

A

MS

T

I

N

U

t

n

e

rr

u

C

k

n

i

S

L

DV

5

.

3

=

D

N

G

P

-

L

D1

A

t

n

e

rr

u

C

k

n

i

S

L

DV

5

7

.

1

=

D

N

G

P

-

L

D5

.A

t

n

e

rr

u

C

e

c

r

u

o

S

L

DV

5

=

L

D

-

L

T

S

B1

A

t

n

e

rr

u

C

e

c

r

u

o

S

L

DV

5

.

2

=

L

D

-

L

T

S

B5

.A

e

m

i

T

d

a

e

D

0

50

0

1s

n

t

n

e

rr

u

C

e

g

r

a

h

C

tr

a

t

S

tf

o

S

)

2

(

5

2A

µ

e

l

b

a

n

E

tr

a

t

S

tf

o

Se

l

c

y

c

y

t

u

d

%

04

.

1V

d

n

E

tr

a

t

S

tf

o

Se

l

c

y

c

y

t

u

d

%

0

0

15

.

2V

n

o

it

i

s

n

a

r

T

tr

a

t

S

tf

o

S

)

2

(

e

d

o

m

s

u

o

n

o

r

h

c

n

y

S3

.

3V

w

o

d

n

i

W

d

o

o

G

r

e

w

o

P

)

3

(

+0

1V

%

T

U

O

t

n

e

rr

u

C

k

c

a

B

d

l

o

FV

T

U

O

V

0

=%

0

5I

M

I

L

e

e

n

K

e

g

a

tl

o

V

k

c

a

B

d

l

o

F=

II

M

I

L

5

2

.

1V

T

U

O

V

t

n

e

rr

u

C

s

a

i

B

t

u

p

n

I2

N

I-

,

2

N

I

+

,

1

N

I-1

A

µ

NOTES:

(1) Specification refers to application circuit.

(2) The soft start pin sources 25µA to an external capacitor. The converter operates in synchronous mode above the soft

start transition threshold and in asynchronous mode below it.

(3) Power good is an open collector pulled low when the output voltage is outside the ±10% window.

(4) This device is ESD sensitive. Use of standard ESD handling precautions is required.

Unless Specified: V