High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
General Description
The AAT1210 is a high power DC/DC boost (step-up)
converter with an input voltage range from 2.7 to
5.5V. The output voltage can be set from V
IN
+ 0.5V
to 18V. The total solution is less than 1mm in height.
High operating efficiency makes the AAT1210 the
ideal solution for battery powered and consumer
applications.
The step-up converter operates at frequencies up to
2MHz, enabling ultra-small external filtering compo-
nents. Hysteretic current mode control provides
excellent transient response with no external com-
pensation, achieving stability across a wide operating
range with minimal design effort.
The AAT1210 true load disconnect feature extends
battery life by isolating the load from the power
source when the EN/SET pin is pulled low, ensuring
zero volts output during the disable state. This fea-
ture eliminates the external boost converter leakage
path and achieves standby quiescient current <1µA
without an external switching device.
A fixed output voltage is set using two external resis-
tors. Alternatively, the output may be adjusted dynami-
cally across a 2.0x range. The output can toggle
between two preset voltages using the SEL logic pin.
Optionally, the output can be dynamically set to any
one of 16 programmed levels using AnalogicTech's
patented Simple Serial Control™ (S
2
Cwire™) interface.
The AAT1210 is available in a Pb-free, thermally-
enhanced 16-pin 3x4mm TDFN low-profile package
and is rated over the -40°C to +85°C temperature
range.
AAT1210
Features
•
•
SwitchReg
™
•
•
•
•
•
•
•
•
•
•
•
•
V
IN
Range: 2.7V to 5.5V
Maximum Continuous Output
— 900mA at 5V
— 300mA at 12V
— 150mA at 18V
Up to 2MHz Switching Frequency
Ultra-Small Inductor and Capacitors
— 1mm Height Inductor
— Small Ceramic Capacitors
Hysteretic Current Mode Control
— No External Compensation
— Excellent Transient Response
— High Efficiency at Light Load
Up to 90% Efficiency
Integrated Low R
DS(ON)
MOSFET Switches
Low Inrush with Integrated Soft Start
Cycle-by-Cycle Current Limit
Short-Circuit and Over-Temperature Protection
True Load Disconnect
Optional Dynamic Voltage Programming
TDFN34-16 Package
-40°C to +85°C Temperature Range
Applications
•
•
•
•
•
•
GPS Systems
DVD Blu-Ray
Handheld PCs
PDA Phones
Portable Media Players
USB OTG
Typical Application
V
IN
3.6V
AAT1210
TDFN34-16
VIN
EN/SET
SEL
GND
C1
4.7µF
0603
LIN
SW
FB1
FB2
R3
4.99kΩ
R2
40.2kΩ
C2
10µF
0603
L1
0.47µH
D1
V
OUT
5V @ 900mA
AAT1210 Boost Converter Output Capability
(TDFN34-16; T
AMB
= 25°C; T
C(RISE)
= +50°C)
°
V
IN
= 4.5V
V
IN
= 3.6V
V
IN
= 2.7V
14
00
7
Output Current (mA)
12
00
10
00
80
0
60
0
40
0
20
0
0
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Output Voltage (V)
1210.2007.02.1.2
1
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
