AT1362A/B

Preliminary Product Information

Synchronous Buck Converter

With Power Good Detector & LDO

7F, No.9, Park Avenue II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

Fax: 886-3-563-0879

5/30/2006

REV:1.0

10

The Dissipation

The power loss is given by:

IN

s

s

f

r

OUT

IN

N

ON

DS

OUT

P

ON

DS

OUT

DC

DC

LOSS

V

I

f

t

t

I

V

D

R

I

D

R

I

P

×

+

×

+

×

×

+

−

×

×

+

×

×

=

−

−

−

)

(

)

1

(

1

)

(

2

1

)

(

2

1

)

(

)

(

2

2

)

(

OUT

IN

OUT

LDO

LOSS

V

V

I

P

−

×

=

)

(

)

(

)

(

)

(

LDO

LOSS

DC

DC

LOSS

JA

A

MAX

J

P

P

T

T

+

×

+

=

−

θ

Inductors Surface Mount

Inductance(

µH)

Manufacturer/Part No.

Manufacturer Website

3.3

Sumida CDRH4D28-3R3

4.7

Sumida CDRH5D18-4R7

www.sumida.com

3.3

Mitsumi C3-K1.8L-3R3

Mitsumi C4-K1.8L-3R3

www.mitsumi.co.jp

3.3

ABC SH40283R3YSB

4.7

ABC SH40284R7YSB

www.atec-group.com

Capacitors Surface Mount

Capacitance(

µF)

Manufacturer/Part No.

Manufacturer Website

22

TDK C3216X5R0J226M

www.tdk.com

47

TDK C3225X5R0J46M

www.tdk.com

10

GRM42-6X5R 106K6.3

www.murata.com

2.2

TAIYO LMK212BJ225MD

www.t-yuden.com

4.7

TAIYO JMK212BJ475MG

www.t-yuden.com