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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