Diodes AP6714 - Manual

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.