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TPS61030_10

更新时间： 2024-11-25 00:50:03
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96% EFFICIENT SYNCHRONOUS BOOST CONVERTER WITH 4A SWITCH

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TPS61030  
TPS61031, TPS61032  
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www.ti.com  
SLUS534D–SEPTEMBER 2002–REVISED APRIL 2004  
96% EFFICIENT SYNCHRONOUS BOOST CONVERTER WITH 4A SWITCH  
FEATURES  
DESCRIPTION  
•
96% Efficient Synchronous Boost Converter  
With 1000-mA Output Current From 1.8-V  
Input  
The TPS6103x devices provide a power supply  
solution for products powered by either a one-cell  
Li-Ion or Li-polymer, or a two to three-cell alkaline,  
NiCd or NiMH battery. The converter generates a  
stable output voltage that is either adjusted by an  
external resistor divider or fixed internally on the chip.  
It provides high efficient power conversion and is  
capable of delivering output currents up to 1 A at 5 V  
at a supply voltage down to 1.8 V. The implemented  
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 converter enters Power Save  
mode to maintain a high efficiency over a wide load  
current range. The Power Save mode can be dis-  
abled, forcing the converter to operate at a fixed  
switching frequency. It can also operate synchronized  
to an external clock signal that is applied to the  
SYNC pin. The maximum peak current in the boost  
switch is limited to a value of 4500 mA.  
•
•
•
Device Quiescent Current: 20-µA (Typ)  
Input Voltage Range: 1.8-V to 5.5-V  
Fixed and Adjustable Output Voltage Options  
Up to 5.5-V  
•
Power Save Mode for Improved Efficiency at  
Low Output Power  
•
•
Low Battery Comparator  
Low EMI-Converter (Integrated Antiringing  
Switch)  
•
•
•
Load Disconnect During Shutdown  
Over-Temperature Protection  
Available in a Small 4 mm x 4 mm QFN-16 or  
in a TSSOP-16 Package  
APPLICATIONS  
The converter can be disabled to minimize battery  
drain. During shutdown, the load is completely dis-  
connected from the battery. A low-EMI mode is  
implemented to reduce ringing and, in effect, lower  
radiated electromagnetic energy when the converter  
enters the discontinuous conduction mode.  
•
All Single Cell Li or Dual Cell Battery  
Operated Products as MP-3 Player, PDAs, and  
Other Portable Equipment  
The device is packaged in a 16-pin QFN package  
measuring 4 mm x 4 mm (RSA) or in a 16-pin  
TSSOP PowerPAD™ package (PWP).  
L1  
e.g. 5 V up to  
1000 mA  
VOUT  
SW  
6.8 µH  
C2  
2.2 µF  
C3  
220 µF  
VBAT  
R3  
R4  
R1  
R2  
1.8 V to 5 V  
Input  
C1  
10 µF  
EN  
FB  
R6  
LBI  
SYNC  
GND  
LBO  
Low Battery  
Comparator  
Output  
PGND  
TPS6103x  
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.  
PowerPAD is a trademark of Texas Instruments.  
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 © 2002–2004, Texas Instruments Incorporated  
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