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Diodes AP6714 User Manual

Ap6714, 8mhz synchronous boost converter, Description

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AP6714

1.8MHz SYNCHRONOUS BOOST CONVERTER

AP6714

Document number: DS31490 Rev. 5 - 2

1 of 11

www.diodes.com

April 2011

© Diodes Incorporated

Description

The AP6714 is fully integrated synchronous current mode

boost converter which provides a complete power supply

solution for all one-cell, two-cell, three cell, alkaline, NiCd or

NiMh or single-cell Lithion battery powered products. They

improve performance, component count and size compared

to conventional controllers, lithium-ion (Li+) designs. On-chip

MOSFETs provide up to 94% efficiency for critical power

supplies. This optimizes overall efficiency and cost, while

also reducing board space. Operate at one fixed frequency of

1.8MHz to optimize size, cost, and efficiency. Other features

include soft-start and overload protection. AP6714 is

available in space-saving 10-pin MSOP package.

Pin Assignments

( Top View )

MSOP-10L

FB

REF

SGND

OCP

Vcc

EN

CC

OUT

LX

PGND

1

2

3

4

5

6

7

8

9

10

Features

94% Efficient Step-Up DC to DC Converter

Wide Input Range 0.9V to 5.5V

1.8V to 5.5V Adjustable Output Voltage

1.8MHz Operating Frequency

Current Mode Operation for faster transient response
and better loop stability

1µA Shutdown Mode

Suitable with Low ESR Ceramic Capacitors (MLCC)

Over Current Protection

Over Temperature Protection

MSOP-10L: Available in “Green” Molding Compound
(No Br, Sb)

Lead Free Finish/ RoHS Compliant (Note 1)

Applications

All One-cell, Two-cell, Three cell, Alkaline, NiCd or
NiMh or Single-cell Li+ Battery Powered Devices.

Cell Phones

Digital Cameras

MP3 Players

PDAs

Typical Application Circuit

(Note 2)

VOUT

VIN

L1

2.7uH

10u

R2

C2

470p

C3

0.1u

10u

U1

AP6714

1

2

3

4

5

7

6

8

9

10

VCC

EN

CC

FB

REF

PGND

SGND

OCP

LX

OUT

Rcc

Rocp

0.1 Ohm

1 MOhm

27 KOhm

R

R

TOP

BOTTOM

C

C

IN

OUT

Notes:

1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Notes.

2. Recommended minimum R

BOTTOM

: 100 K

Ω.