PRODUCT DATASHEET
AAT2515
SystemPower
TM
General Description
The AAT2515 is a dual channel synchronous buck con-
verter 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 output voltages, each
channel is designed to operate with 27μA (typical) of
quiescent current, allowing for high efficiency under light
load conditions.
The AAT2515 requires only three external components
(C
IN
, C
OUT
, and L
X
) for each converter, minimizing cost and
real estate. Both channels are designed to deliver 600mA
of load current and operate with a switching frequency of
1.4MHz, reducing the size of external components.
The AAT2515 is available in a Pb-free, 12-pin TDFN33
package and is rated over the -40°C to +85°C tempera-
ture range.
Dual 600mA Fast Transient High Frequency Buck Converter
Features
• V
IN
Range: 2.7V to 5.5V
• Output Current:
▪
Channel 1: 600mA
▪
Channel 2: 600mA
• 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
• 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
OUT1
VIN1
LX1
L1
4.7μH
V
BAT
C
IN
10μF
VIN2
FB1
AAT2515
EN1
LX2
L2
4.7μH
EN2
GND
FB2
V
OUT2
C
OUT
10μF
10μF
2515.2007.12.1.0
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