TPS61030 Datasheet, PDF (1/20 Pages) Texas Instruments – 96% EFFICIENT SYNCHRONOUS BOOST CONVERTER WITH 4A SWITCH

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Actual Size
(5,0 mm x 6,4 mm)
Actual Size
(4,15 mm x 4,15 mm)
TPS61030
TPS61031, TPS61032
SLUS534D – SEPTEMBER 2002 – REVISED APRIL 2004
96% EFFICIENT SYNCHRONOUS BOOST CONVERTER WITH 4A SWITCH
FEATURES
• 96% Efficient Synchronous Boost Converter
With 1000-mA Output Current From 1.8-V
Input
• 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
• All Single Cell Li or Dual Cell Battery
Operated Products as MP-3 Player, PDAs, and
Other Portable Equipment
DESCRIPTION
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.
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.
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).
1.8 V to 5 V
C1
Input 10 µF
L1
6.8 µH
R1
R2
SW
VBAT
EN
LBI
VOUT
FB
SYNC
LBO
GND
PGND
TPS6103x
C2
C3
R3 2.2 µF 220 µF
R4
R6
e.g. 5 V up to
1000 mA
Low Battery
Comparator
Output
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