TPS62290_16 Datasheet, PDF (1/27 Pages) Texas Instruments – 1-A Step Down Converter in 2 x 2 DRV Package

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TPS62290, TPS62291, TPS62293
SLVS764F – JUNE 2007 – REVISED JANUARY 2016
TPS6229x 1-A Step Down Converter in 2 x 2 DRV Package
1 Features
•1 High Efficiency - up to 96%
• Output Current up to 1000 mA
• V_IN Range From 2.3 V to 6.0V for Li-ion Batteries
with Extended Voltage Range
• 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
• Typical 15-μA Quiescent Current
• 100% Duty Cycle for Lowest Dropout
• Voltage Positioning at Light Loads
• Available in a 2-mm × 2-mm × 0.8-mm WSON (6)
Package (DRV)
2 Applications
• Mobile Phones, Smart-Phones
• Wireless LAN
• Pocket PCs
• Low Power DSP Supply
• Portable Media Players
• Point-of-Load (POL) Applications
3 Description
The TPS6229x devices are highly efficient
synchronous step down DC/DC converters optimized
for battery powered portable applications. They
provide up to 1000-mA output current from a single
Li-ion cell.
With an input voltage range of 2.3 V to 6.0 V, the
devices support batteries with extended voltage
range and are ideal to power portable applications
like mobile phones and other portable equipment.
The TPS6229x devices operate at 2.25-MHz fixed
switching frequency and enter power save mode
operation at light load currents to maintain high
efficiency over the entire load current range.
The power save mode is optimized for low output
voltage ripple. For low noise applications, the devices
can be forced into fixed frequency pulse width
modulation (PWM) mode by pulling the MODE pin
high. In the shutdown mode, the current consumption
is reduced to less than 1 μA. The TPS6229x devices
allow the use of small inductors and capacitors to
achieve a small solution size.
The TPS6229x devices operate over a free air
temperature range of –40°C to 85°C. The devices are
available in a 2-mm × 2-mm 6-pin WSON package
(DRV).
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
TPS6229x
SON (6)
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application Schematic
V_IN 2.7 V to 6.0 V
C_IN
10 mF
TPS62290DRV
V_IN
SW
EN
GND
FB
MODE
L1
2.2 mH
R₁
360 kW
R₂
180 kW
V_OUT 1.8 V,
1000 mA
C₁
22 pF
C_OUT
Efficiency vs Output Current
100
V_IN = 4.2 V
90
80
V_IN = 3.8 V
V_IN = 5 V
70
V_IN = 4.5 V
60
50
V_OUT = 3.3 V,
MODE = GND,
L = 2.2 mH
40
30
0.00001 0.0001 0.001 0.01 0.1
1
I_O - Output Current - A
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.