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AAT2512 Datasheet, PDF (1/20 Pages) Advanced Analogic Technologies – Dual 400mA High Frequency Buck Converter | |||
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AAT2512
Dual 400mA High Frequency Buck Converter
General Description
Features
SystemPowerâ¢
The AAT2512 is a member of AnalogicTech's Total
Power Management IC⢠(TPMICâ¢) 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 (CIN, COUT, and LX) 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.
⢠VIN Range: 2.7V to 5.5V
⢠Output Current:
â Channel 1: 400mA
â 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
Typical Application
V BAT
CIN
VIN1
LX1
VIN2
FB1
AAT2512
EN1
LX2
EN2
FB2
GND
L1
4.7µH
V OUT1
VOUT2
L2
4.7µH
4.7µF
COUT
4.7µF
2512.2006.06.1.4
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