TPS62260_15 Datasheet, PDF (1/33 Pages) Texas Instruments – TPS6226x 2.25-MHz 600-mA Step Down Converter in 2 x 2 WSON and SOT Package

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TPS62260, TPS62261, TPS62262, TPS62263
SLVS763E – JUNE 2007 – REVISED JULY 2015
TPS6226x 2.25-MHz 600-mA Step Down Converter in 2 x 2 WSON and SOT Package
1 Features
•1 High Efficiency Step-Down Converter
• Output Current up to 600 mA
• V_IN Range from 2 V to 6 V 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%
• Typical 15-μA Quiescent Current
• 100% Duty Cycle for Lowest Dropout
• Voltage Positioning at Light Loads
• Available in a SOT (5) and 2-mm × 2-mm × 0.8-
mm WSON (6) Package
• Allows <1-mm Solution Height
2 Applications
• Mobile Phones, Smart Phones
• Low Power DSP Supply
• Portable Media Players
• Point-of-Load (POL) Applications
3 Description
The TPS6226x device is a highly efficient
synchronous step-down DC/DC converter. The
TPS6226x provides up to 600-mA output current from
a single Li-Ion cell, and is ideal for battery-powered
applications such as mobile phones and other
portable equipment.
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Typical Application Schematic
V_IN = 2 V to 6 V
C_IN
4.7 mF
TPS62260DRV
V_IN
SW
EN
GND
FB
MODE
L
2.2 mH
R₁
R₂
C₁
22 pF
Up to 600 mA
V_OUT
C_OUT
10 mF
With an wide input voltage range of 2 V to 6 V, the
device also supports two- and three-cell alkaline
batteries, 3.3-V and 5-V input voltage rails.
The TPS6226x 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 power save mode is optimized for low-output
voltage ripple. For low noise applications, the device
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 TPS6226x allows
the use of small inductors and capacitors to achieve a
small solution size.
The TPS6226x operates over a free air temperature
range of –40°C to 85°C. It is available in a 5-pin SOT
and a 6-pin 2-mm × 2-mm WSON package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS62260
WSON (6)
SOT (5)
2.00 mm × 2.00 mm
2.90 mm × 1.60 mm
TPS62261
WSON (6)
2.00 mm × 2.00 mm
TPS62262
WSON (6)
SOT (5)
2.00 mm × 2.00 mm
2.90 mm × 1.60 mm
TPS62263
WSON (6)
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Efficiency vs Output Current
100%
90%
80%
V_I = 2.3 V
V_I = 2.7 V
70%
60%
V_I = 4.5 V
V_I = 3.6 V
50%
40%
V_I = 3 V
30%
20%
10%
0%
10μ
100μ
1m
10m
Output Current (A)
V_O = 1.8 V
MODE = GND
L = 2.2 μH
DCR = 110 mΩ
100m
1
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.