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AAT1299

Description
Low Voltage 2MHz Step-Up DC/DC Converter
File Size345KB,14 Pages
ManufacturerADI
Websitehttps://www.analog.com
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AAT1299 Overview

Low Voltage 2MHz Step-Up DC/DC Converter

AAT1299
Low Voltage 2MHz Step-Up DC/DC Converter
General Description
The AAT1299 is a high efficiency, synchronous,
fixed frequency, step-up converter with start-up
inrush current limit and short-circuit protection. The
input voltage ranges from 1.0V to the output voltage.
The high 2MHz switching frequency and completely
integrated control circuitry minimize the total solution
footprint area while maintaining excellent regulation,
ripple, and transient response throughout the full
load range.
Light load switching frequency modulation and low
quiescent current maintain high efficiency perform-
ance for light load and sleep mode conditions.
With a 1A peak switch current limit, the AAT1299 is
capable of delivering 200mA to the load from a
1.8V input.
The AAT1299 is available in a Pb-free, space-sav-
ing 2.0x2.1mm 8-pin SC70JW or 2.2x2.2mm 10-
pin STDFN package, or in die form and is rated
over the -40°C to +85°C temperature range.
Features
SwitchReg
200mA Output from a 1.8V Input
V
IN
Operation Range: 1.0V to V
OUT
Up to 93% Efficiency
Low Start-Up Voltage: 1.0V Typical
Internal Synchronous Rectifier
Current Mode Control with Internal Feedback
and Compensation
2MHz Fixed Switching Frequency
1A Current Limit
Maintains High Efficiency Over the Output
Current Range for Improved Battery Life
Low 40µA No Load Bias Current
Short-Circuit and Over-Current Protection
Inrush Current Limit and Soft Start
Low Shutdown Current: <1.0µA
-40°C to +85°C Temperature Range
2.0x2.1mm SC70JW-8 or 2.2x2.2mm 10-pin
STDFN Package or Die
Applications
Bluetooth™ Headsets
Digital Cameras
Medical Instruments
Mobile Handsets
MP3 and Portable Music Players
Typical Application
V
IN
2.2μH
LX
AAT1299
VCC
V
OUT
VIN
OUT
4.7μF
4.7μF
EN
GND
1299.2007.06.1.0
1

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Index Files: 108  1841  1713  1826  542  3  38  35  37  11 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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