microBUCK® PRODUCT FAMILY

SiP12107, 3 A, 5.5 V Synchronous microBUCK® Regulator

!

C

M

Y

CM

MY

CY

CMY

K

SiP12107 buck and app circuit.pdf

1

10/25/12

8:45 PM

SIP12107

SiP12107 Typical Application Circuit

SiP12107 Typical Block Diagram

Efficiency Curve

70

75

80

85

90

95

100

0

0.5

1

1.5

2

2.5

3

3.3V – 1.2V

PWM

Eff PWM 500KHZ Various Configurations

C

M

Y

CM

MY

CY

CMY

K

SiP12107 efficiency curve.pdf

1

10/25/12

8:31 PM

SiP12107 Efficiency Curve

Fig. 2 - SiP12107 Functional Block Diagram

ON-TIME

GENERATOR

+

-

PWM COMPARATOR

SOFT

START

0.6 V

REFERENCE

AGND

P

GOOD

AVIN

EN

VFB

VIN

1,16

VIN

LX

P

GND

VIN

VIN

11,12,13

14,15

ANTI-XCOND

CONTROL

8

6

2

3

ZCD

+

-

0.72 V

OV Comparator

CONTROL

LOGIC

SECTION

OCP

UVLO

OTP

5

AUTO

7

GMO

OTA

+

-

+

Isense

9

I-V

Converter

Isense

RON

VOUT

4

10

+

-

0.45 V

VFB

UV Comparator

PAD

Current

Mirror

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO

SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

VMN-PL0427-1210

10/12

PRODUCT OVERVIEW

POWER ICS

ON

AND TEC

1 9 6 2 - 2 0 1 2

VI SH AY I N TE R TE C H N O L OGY, I NC .