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TPS61070, TPS61071, TPS61072, TPS61073
SLVS510E – JULY 2006 – REVISED MARCH 2015
TPS6107x 90% Efficient Synchronous Boost Converter With 600-mA Switch
1 Features
•1 90% Efficient Synchronous Boost Converter – 75-mA Output Current at 3.3 V From 0.9-V Input – 150-mA Output Current at 3.3 V From 1.8-V Input
• Device Quiescent Current: 19 µA (Typ) • Input Voltage Range: 0.9 V to 5.5 V • Adjustable Output Voltage Up to 5.5 V • Power-Save Mode Version Available for
Improved Efficiency at Low Output Power • Load Disconnect During Shutdown • Overtemperature Protection • Small 6-Pin Thin SOT23 Package
2 Applications
• All One-Cell, Two-Cell, and Three-Cell Alkaline, NiCd or NiMH or Single-Cell Li Battery-Powered Products
• Portable Audio Players • PDAs • Cellular Phones • Personal Medical Products • White LED Lighting
3 Description
The TPS6107x devices provide a power supply solution for products powered by either a one-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or onecell Li-ion or Li-polymer battery. Output currents can go as high as 75 mA while using a single-cell alkaline, and discharge it down to 0.9 V. It can also be used for generating 5 V at 200 mA from a 3.3-V rail or a Li-ion battery. The boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. At low load currents the TPS61070 and TPS61073 enter the power-save mode to maintain a high efficiency over a wide load current range. The power-save mode is disabled in the TPS61071 and TPS61072, forcing the converters to operate at a fixed switching frequency. The maximum peak current in the boost switch is typically limited to a value of 600 mA.
The TPS6107x output voltage is programmed by an external resistor divider. The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. The device is packaged in a 6-pin thin SOT23 package (DDC).
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61070
TPS61071 TPS61072
SOT (6)
2.90 mm x 1.60 mm
TPS61073
(1) For all available packages, see the orderable addendum at the end of the datasheet.
4 Typical Application Circuit
L1
4.7 µH
SW VOUT
VBAT
FB
VO
R1
C2 3.3 V Up To 10 µF 100 mA
0.9-V To VO
C1
EN
R2
10 µF
GND
TPS61070
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.
TPS61070, TPS61071, TPS61072, TPS61073
SLVS510E – JULY 2006 – REVISED MARCH 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Typical Application Circuit ................................... 1 5 Revision History..................................................... 2 6 Device Comparison Table..................................... 3 7 Pin Configuration and Functions ......................... 3 8 Specifications......................................................... 4
8.1 Absolute Maximum Ratings ...................................... 4 8.2 ESD Ratings.............................................................. 4 8.3 Recommended Operating Conditions....................... 4 8.4 Thermal Information .................................................. 4 8.5 Electrical Characteristics........................................... 5 8.6 Typical Characteristics .............................................. 6 9 Parameter Measurement Information .................. 8 10 Detailed Description ............................................. 9 10.1 Overview ................................................................. 9 10.2 Functional Block Diagram ....................................... 9
10.3 Feature Description................................................. 9 10.4 Device Functional Modes...................................... 11 11 Application and Implementation........................ 12 11.1 Application Information.......................................... 12 11.2 Typical Application ................................................ 12 11.3 System Examples ................................................. 17 12 Power Supply Recommendations ..................... 19 13 Layout................................................................... 19 13.1 Layout Guidelines ................................................. 19 13.2 Layout Example .................................................... 19 13.3 Thermal Considerations ........................................ 20 14 Device and Documentation Support ................. 21 14.1 Device Support..................