鈩?/div>
The AAT1106 can supply up to 600mA load current
from a 2.5V to 5.5V input voltage and the output
voltage can be regulated as low as 0.6V. The
device also can run at 100% duty cycle for low
dropout operation, extending battery life in portable
systems. In addition, light load operation provides
very low output ripple for noise sensitive applica-
tions and the 1.5MHz switching frequency mini-
mizes the size of external components while keep-
ing switching losses low.
The AAT1106 is available in adjustable and fixed
(1.5V, 1.8V) output voltage versions, comes in a
Pb-free, low-profile 5-pin TSOT23 package, and is
rated over the -40擄C to +85擄C temperature range.
The AAT1106 SwitchReg鈩?is a 1.5MHz constant
frequency current mode PWM step-down convert-
er with a unique adaptive slope compensation
scheme allowing the device to operate with a lower
range of inductor values to optimize size and pro-
vide efficient operation. It is ideal for portable
equipment powered by single-cell Lithium-ion bat-
teries and is optimized for high efficiency, achiev-
ing levels up to 96%.
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
V
IN
Range: 2.5V to 5.5V
V
OUT
: Adjustable 0.6V to V
IN
Up to 600mA Output Current
Up to 96% Efficiency
1.5MHz Switching Frequency
100% Duty Cycle Dropout Operation
Adaptive Slope Compensated Current Mode
Control for Excellent Line and Load Transient
Response
<1碌A Shutdown Current
Short-Circuit and Thermal Fault Protection
TSOT23-5 Package
-40擄C to +85擄C Temperature Range
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Cellular Phones, Smartphones
Digital Still Cameras
Digital Video Cameras
Microprocessor and DSP Core Supplies
MP3 and Portable Media Players
PDAs
Wireless and DSL Modems
Typical Application
V
IN
2.5V to 5.5V
L1
2.2碌H
V
OUT
1.8V
IN
C1
4.7碌F
AAT1106-1.8
GND
LX
EN
OUT
C3
10碌F
1106.2007.07.1.0
1
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