TPS61230_15 Datasheet, PDF (1/31 Pages) Texas Instruments – TPS6123x High Efficiency Synchronous Step Up Converters with 5-A Switches

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TPS61230, TPS61231, TPS61232
SLVSAQ2C – JANUARY 2014 – REVISED OCTOBER 2014
TPS6123x High Efficiency Synchronous Step Up Converters with 5-A Switches
1 Features
•1 Input Voltage Range: 2.3 V to 5.5 V
• Output Voltage Range: 2.5 V to 5.5 V
• Up to 96% Efficiency Synchronous Boost
Converter
• 3.3-V to 5-V Power Conversion with 2.1-A Output
Current
• Input Supply Voltage Supervisor with Adjustable
Threshold/Hysteresis
• Power Save Mode for Light Load Efficiency
• Load Disconnect During Shutdown
• Output Over Voltage Protection
• Programmable Soft Start
• Power Good Output
• 2-MHz Switching Frequency
• Output Capacitor Discharge (TPS61231)
• 3 mm x 3 mm x 0.9 mm VSON Package
2 Applications
• Low Voltage Li-Ion Battery Powered Products
• USB Power Supply
• Tablet PCs
• Power Banks, Battery Backup Units
• Industrial Metering Equipments
3 Description
The TPS6123x device family is a high efficiency
synchronous step up converter with compact solution
size. It is optimized for products powered by a one-
cell Li-Ion battery, or a regulated power rail of 3.3 V.
The IC integrates a 5-A switch and is capable of
delivering output currents up to 2.1 A at a 5-V output
with a 3.3-V input supply. The device is based on a
quasi-constant on-time valley current mode control
scheme. The typical operating frequency is 2 MHz,
which allows the use of small inductors and
capacitors to achieve a small solution size. The
TPS61230 and TPS61231 provide an adjustable
output voltage via an external resistor divider, and the
TPS61232 provides a fixed output voltage of 5 V.
During light loads, the TPS6123x automatically enters
power save mode for maximum efficiency at lowest
quiescent currents. In shutdown, the load is
completely disconnected from the input, and the input
current consumption is reduced to 1.5 µA typical. The
device integrates a precise low power EN
comparator. The EN threshold as well as the
hysteresis of the enable comparator are adjustable
with external resistors and support application
specific system power up and down requirements.
Other features like output over voltage protection,
thermal shutdown protection, and a power good
output are built-in.
The devices are available in a 3 mm x 3 mm x 0.9
mm VSON package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61230
TPS61231⁽²⁾
VSON (10)
3.00 mm x 3.00 mm
TPS61232
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
(2) Preview product. Contact TI factory for more information
TPS61230 Typical Application
L1
1.0µH
TPS61230 Typical Application Efficiency
100
V_IN
C1
22µF
C3
10nF
VIN
SW
EN
VOUT
HYS
FB
SS
GND
PG
TPS61230
R1
402k
R2
100k
R3
1.0Meg
V_OUT
C2
3x22µF
90
80
70
Vout = 5.0 V
60
0.001
0.010
0.100
Iout (A)
Vin = 3.0 V
Vin = 3.6 V
Vin = 4.2 V
1.000
C008
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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.