(3,25 mm x 3,25 mm)
1
FEATURES
APPLICATIONS
DESCRIPTION
L
VIN
EN
UVLO
PS
GND
PGND
FB
VAUX
VOUT
TPS61200
VIN
0.3Vto5.5V
VOUT
1.8Vto5.5V
10
F
m
10
F
m
2.2
H
m
0.1
F
m
C
1
C
2
C
3
L
1
R1
R2
SLVS577B – MARCH 2007 – REVISED FEBRUARY 2008
www.ti.com
LOW INPUT VOLTAGE SYNCHRONOUS BOOST CONVERTER
WITH 1.3-A SWITCHES
Power Save Mode for Improved Efficiency at
Low Output Power
2
More than 90% Efficiency at
Forced fixed Frequency Operation possible
–
300 mA Output Current at 3.3 V
(VIN
≥ 2.4 V)
Load Disconnect During Shutdown
–
600 mA Output Current at 5 V (VIN
≥ 3 V)
Overtemperature Protection
Automatic Transition between Boost Mode and
Small 3 mm x 3 mm QFN-10 Package
Down Conversion Mode
Device Quiescent Current less than 55 A
All Single-Cell, Two-Cell and Three-Cell
Startup into Full Load at 0.5 V Input Voltage
Alkaline, NiCd or NiMH or Single-Cell Li
Operating Input Voltage Range from
Battery Powered Products
0.3 V to 5.5 V
Fuel Cell And Solar Cell Powered Products
Programmable Undervoltage Lockout
Portable Audio Players
Threshold
PDAs
Output Short Circuit Protection Under all
Cellular Phones
Operating Conditions
Personal Medical Products
Fixed and Adjustable Output Voltage Options
White LED's
from 1.8 V to 5.5 V
The TPS6120x devices provide a power supply solution for products powered by either a single-cell, two-cell, or
three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. It is also used in fuel cell or solar cell
powered devices where the capability of handling low input voltages is essential. Possible output currents are
depending on the input to output voltage ratio. The devices provides output currents up to 600 mA at a 5-V
output while using a single-cell Li-Ion or Li-Polymer battery, and discharge it down to 2.5 V. The boost converter
is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain
maximum efficiency. At low load currents, the converter enters the Power Save mode to maintain a high
efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to
operate at a fixed switching frequency. The maximum average input current is limited to a value of 1500 mA. The
output voltage can be programmed by an external resistor divider, or is fixed internally on the chip. 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 10-pin QFN PowerPAD package (DRC) measuring 3 mm x 3 mm.
1
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.
2
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2007–2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.