TPS62290, TPS62291, TPS62293
www.ti.com
SLVS764C – JUNE 2007 – REVISED MARCH 2008
1-A Step Down Converter in 2 x 2 SON Package
FEATURES
1
High Efficiency Step Down Converter
Output Current up to 1000 mA
VIN Range From 2.3 V to 6 V
2.25 MHz Fixed Frequency Operation
Power Save Mode at Light Load Currents
Output Voltage Accuracy in PWM mode ±1.5%
Fixed Output Voltage Options
Typ. 15-µA Quiescent Current
100% Duty Cycle for Lowest Dropout
Voltage Positioning at Light Loads
Available in a 2 × 2 × 0,8 mm SON Package
Cell Phones, Smart-phones
WLAN
PDAs, Pocket PCs
Low Power DSP Supply
Portable Media Players
POL
VIN 2.7 V to 6 V
TPS62290DRV
VIN
CIN
GND
MODE
VOUT 1.8 V,
1000 mA
L1
2.2 mH
R1
360 kW
10 mF
With an input voltage range of 2.3 V to 6 V, the
device supports batteries with extended voltage
range and are ideal to power portable applications
like mobile phones and other portable equipment.
The TPS6229x operates at 2.25-MHz fixed switching
frequency and enters Power Save Mode operation at
light load currents to maintain high efficiency over the
entire load current range.
The TPS6229x is available in a 2-mm × 2-mm 6-pin
SON package.
SW
EN
The TPS6229x device is a highly efficient
synchronous step down dc-dc converter optimized for
battery powered portable applications. It provides up
to 1000-mA output current from a single Li-Ion cell.
The Power Save Mode is optimized for low output
voltage ripple. For low noise applications, the device
can be forced into fixed frequency PWM mode by
pulling the MODE pin high. In the shutdown mode,
the current consumption is reduced to less than 1 µA.
The TPS6229x allows the use of small inductors and
capacitors to achieve a small solution size.
APPLICATIONS
•
•
•
•
•
•
DESCRIPTION
C1
22 pF
100
VIN = 4.2 V
90
VIN = 3.8 V
COUT
10 mF
80
FB
R2
180 kW
Efficiency - %
•
•
•
•
•
•
•
•
•
•
•
70
VIN = 5 V
VIN = 4.5 V
60
50
40
VOUT = 3.3 V,
MODE = GND,
L = 2.2 mH
30
0.00001 0.0001 0.001
0.01
0.1
IO - Output Current - A
1
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2008, Texas Instruments Incorporated
