參數(shù)資料
型號: AAT2512
廠商: Advanced Analogic Technologies, Inc.
英文描述: Dual 400mA High Frequency Buck Converter
中文描述: 雙400mA的高頻降壓轉換器
文件頁數(shù): 1/20頁
文件大?。?/td> 738K
代理商: AAT2512
General Description
The AAT2512 is a member of AnalogicTech's Total
Power Management IC (TPMIC) product fam-
ily. It is a dual channel synchronous buck convert-
er operating with an input voltage range of 2.7V to
5.5V, making it ideal for applications with single-
cell lithium-ion/polymer batteries.
Both regulators have independent input and
enable pins. Offered with fixed or adjustable out-
put voltages, each channel is designed to operate
with 27μA (typical) of quiescent current, allowing
for high efficiency under light load conditions.
The AAT2512 requires only three external compo-
nents (C
IN
, C
OUT
, and L
X
) for each converter, mini-
mizing cost and real estate. Both channels are
designed to deliver 400mA of load current and
operate with a switching frequency of 1.4MHz,
reducing the size of external components.
The AAT2512 is available in a Pb-free, 12-pin
TDFN33 package and is rated over the -40°C to
+85°C temperature range.
Features
V
IN
Range: 2.7V to 5.5V
Output Current:
— Channel 1: 400mA
— Channel 2: 400mA
98% Efficient Step-Down Converter
Integrated Power Switches
100% Duty Cycle
1.4MHz Switching Frequency
Internal Soft Start
150μs Typical Turn-On Time
Over-Temperature Protection
Current Limit Protection
Available in TDFN33-12 Package
-40°C to +85°C Temperature Range
Applications
Cellular Phones
Digital Cameras
Handheld Instruments
Microprocessor / DSP Core/ IO Power
PDAs and Handheld Computers
AAT2512
Dual 400mA High Frequency Buck Converter
Typical Application
AAT2512
4.7μF
GND
LX1
FB1
VIN1
VIN2
V
BAT
C
IN
EN1
EN2
L1
4.7μH
L2
4.7μH
C
OUT
4.7μF
V
OUT1
LX2
FB2
V
OUT2
2512.2006.06.1.4
1
SystemPower
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