AME5110 Datasheet, PDF (1/13 Pages) Analog Microelectronics – 600mA / 1.2MHz PWM Buck DC-DC Converter

AME, Inc.
AME5110
n General Description
The AME5110 family of Fixed Frequency,High Efficiency,
Synchronous Buck, DC-DC Converters, apply the latest
innovations in Current-Mode Technology. Available in SOT-
25 package, these devices are typically twice as efficient
as standard LDO’ s, making them well suited for most
portable applications.
The AME5110 is simple to use. As with standard
LDO’ s,(1) Input, and (1) Output capacitor are required.
The only other element is a small, low cost, 2.2µH induc-
tor. The AME5110 is availabe with fixed output voltages
of 1.5V and 1.8V, or adjustable at 600mA. Using a propri-
etary “ Extreme Green” Technology, battery life is maxi-
mized with Frequency Foldback at light Load, and 100%
duty when Vin approaches Vout.
600mA / 1.2MHz PWM
Buck DC-DC Converter
n Typical Application
Fixed Voltage Version
V_IN
C_IN
4.7µ F
CER
2.2µH
V_IN
SW
AME5110
EN
V _OUT
GND
V_OUT
C_OUT
10µF
CER
n Features
l High Efficiency “ Extreme Green”
l 2.5V to 5.5V Input
l Short Circuit Protection
l Over-Temperature Shutdown
l Under-Volatge Lockout
l Superb Transient Response
l All AME’ s Lead Free Products Meet RoHS
Standards
Adjustable Voltage Version
V_IN
C_IN
4.7µ F
CER
2.2µH
V_IN
SW
AME5110
22pF
EN
V_FB
GND
V_OUT
R1
C_OUT
10µ F
R2 ^CER
n Applications
l Cellular Phones
l Digital Cameras
l Portable Electronics
l USB Devices
l MP3 Players
l LDO Replacement
Rev. A.03
V_OUT=V_FB (R1+R2)/R2
1