SiP12110

www.vishay.com

Vishay Siliconix

S14-1891-Rev. A, 15-Sep-14

1

Document Number: 64299

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

6 A, 4.5 V to 15 V Input

Synchronous Buck Regulator

DESCRIPTION

The SiP12110 is a high frequency current-mode constant

on-time

(CM-COT)

synchronous

buck

regulator

with

integrated high-side and low-side power MOSFETs. Its

power stage is capable of supplying 6 A continuous current

at 1.0 MHz switching frequency. This regulator produces an

adjustable output voltage down to 0.6 V from 4.5 V to 15 V

input rail to accommodate a variety of applications,

including computing, consumer electronics, telecom, and

industrial.

SiP12110’s CM-COT architecture delivers ultrafast transient

response with minimum output capacitance and tight ripple

regulation at very light load. The part is stable with any

capacitor type and no ESR network is required for loop

stability. The device also incorporates a power saving

scheme that significantly increases light load efficiency.

The regulator integrates a full protection feature set,

including output overvoltage protection (OVP), output under

voltage protection (UVP) and thermal shutdown (OTP). It

also has UVLO for input rail and internal soft-start ramp.

The SiP12110 is available in lead (Pb)-free power enhanced

3 mm x 3 mm QFN-16 package.

FEATURES

• 4.5 V to 15 V input voltage

• Adjustable output voltage down to 0.6 V

• 6 A continuous output current

• Selectable switching frequency from 400 kHz to

1.0 MHz with an external resistor

• 95 % peak efficiency

• Stable with any capacitor. No external ESR network

required

• Ultrafast transient response

• Power saving scheme for increased light load efficiency

• Cycle-by-cycle current limit

• Fully protected with OTP, SCP, UVP, OVP

• -40 °C to +125 °C operating junction temperature

• Output voltage tracking

• Material categorization: for definitions of compliance

APPLICATIONS

• Point of load regulation for low-power processors,

network processors, DSPs, FPGAs, and ASICs

• Low voltage, distributed power architectures with 5 V

or 12 V rails

• Computing, broadband, networking, LAN / WAN, optical,

test and measurement

• A/V, high density cards, storage, DSL, STB, DVR, DTV,

Industrial PC

TYPICAL APPLICATION CIRCUIT

Fig. 1 - Typical Application Circuit for SiP12110

V

IN

P

GOOD

EN

V

CC

LX

P

GND

A

GND

Power good

Enable

V

OUT

V

FB

COMP

R

ON

BOOT

Input = 4.5 V to 15 V

SS