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TPS62290, TPS62291, TPS62293
SLVS764G – JUNE 2007 – REVISED APRIL 2018
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 • VIN 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
VIN 2.7 V to 6.0 V
CIN 10 mF
TPS62290DRV VIN SW
EN
GND
FB
MODE
L1 2.2 mH
R1 360 kW
R2 180 kW
VOUT 1.8 V, 1000 mA
C1 22 pF
COUT
Efficiency vs Output Current
100 VIN = 4.2 V
90
80
VIN = 3.8 V VIN = 5 V
70 VIN = 4.5 V
Efficiency - %
60
50 VOUT = 3.3 V, MODE = GND, L = 2.2 mH
40
30 0.00001 0.0001 0.001 0.01
0.1
IO - Output Current - A
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.
TPS62290, TPS62291, TPS62293
SLVS764G – JUNE 2007 – REVISED APRIL 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Revision History..................................................... 2 5 Device Comparison Table..................................... 3 6 Pin Configuration and Functions ......................... 3 7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4 7.2 ESD Ratings.............................................................. 4 7.3 Recommended Operating Conditions....................... 4 7.4 Thermal Information .................................................. 4 7.5 Electrical Characteristics .......................................... 5 7.6 Typical Characteristics .............................................. 6 8 Detailed Description .............................................. 7 8.1 Overview ................................................................... 7 8.2 Functional Block Diagram ......................................... 7 8.3 Feature Description................................................... 7
8.4 Device Functional Modes.......................................... 9 9 Application and Implementation ........................ 11
9.1 Application Information............................................ 11 9.2 Typical Application .................................................. 11 9.3 System Examples ................................................... 17 10 Power Supply Recommendations ..................... 18 11 Layout................................................................... 18 11.1 Layout Guidelines ................................................. 18 11.2 Layout Example .................................................... 18 12 Device and Documentation Support ................. 19 12.1 Device Support...................................................... 19 12.2 Related Links .........