As2014

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AS2014 1.2MHz, 5A Peak Current Step-up Converter PRELIMINARY SPECIFICATION SUBJECT TO CHANGE

FEATURES            

GENERAL DESCRIPTION

Efficiency: Up to 92% Switch Current: Up to 5A Input Voltage: 2.5V to 6V Output Voltage: 10V(max.) 1.2MHz Switching Frequency Very Low RDS(ON): 70mΩ Under-Voltage Lockout Protection Over-Temperature Protection Internal Soft Start 1uA Shutdown Current Accurate Reference: 0.6V Compact Package: SOT23-6L

The AS2014 is a high efficiency current-mode boost converter with a fixed operation frequency. The device integrates a very low RDS(ON) N channel Mosfet to reduce power loss and achieve high efficiency. The maximum efficiency is up to 92%. AS2014 can output 2.5A current when Vin is higher than 3.6V and output is 5V. 1.2MHz operation frequency minimizes L and C value, and internal compensation network reduces external components. SOT23-6L package provides the best solution for PCB layout area.

APPLICATIONS   

Digital Camera Battery Charger Portable Equipments

TYPICAL APPLICATION CIRCUIT

100

L 4.7uH

5

IN

CIN

1

AS2014

10uF

OFF ON

SW

4

EN

GND 2

D

CCOMP 100pF

220K

FB

CO1

0.1uF

90

VOUT

Rfb1 3

VIN =4.2V

95

CO2

22uFx2

Rfb2 30K

Efficiency (%)

VIN

Efficiency vs Load Current

VIN =3.6V

85 80 75 70 65

VOUT = 5V L= 4.7uH

60 55 50 0

0.5

1

1.5

2

Load Current (A)

AS2014 rev1.5 05/02/2015

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