TPS63060_15 Datasheet, PDF (1/30 Pages) Texas Instruments – TPS6306x High Input Voltage, Buck-Boost Converter With 2-A Switch Current

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TPS63060, TPS63061
SLVSA92B – DECEMBER 2011 – REVISED DECEMBER 2014
TPS6306x High Input Voltage, Buck-Boost Converter With 2-A Switch Current
1 Features
•1 Input Voltage Range: 2.5 V to 12 V
• Efficiency: Up to 93%
• Output Current at 5 V (V_IN<10 V): 2 A in Buck
Mode
• Output Current at 5 V (V_IN>4 V): 1.3 A in Boost
Mode
• Automatic Transition Between Step Down and
Boost Mode
• Typical Device Quiescent Current: < 30 μA
• Fixed and Adjustable Output Voltage Options from
2.5 V to 8 V
• Power-Save Mode for Improved Efficiency at Low
Output Power
• Forced Fixed-Frequency Operation at 2.4 MHz
and Synchronization Possible
• Power Good Output
• Buck-Boost Overlap Control™
• Load Disconnect During Shutdown
• Overtemperature Protection
• Overvoltage Protection
2 Applications
• Dual Li-Ion Application
• DSCs and Camcorders
• Notebook Computer
• Industrial Metering Equipment
• Ultra Mobile PCs and Mobile Internet Devices
• Personal Medical Products
• High-Power LEDs
3 Description
The TPS6306x devices provide a power supply
solution for products powered by either three-cell up
to six-cell alkaline, NiCd or NiMH battery, or a one-
cell or dual-cell Li-Ion or Li-polymer battery. Output
currents can go as high as 2-A while using a dual-cell
Li-Ion or Li-polymer battery, and discharge it down to
5 V or lower. The buck-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 power-save mode to maintain 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 current in the switches is limited to a typical
value of 2.25 A. The output voltage is programmable
using 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
disconnected from the battery.
The devices are available in a 3 mm × 3 mm, 10-pin,
WSON (DSC), PowerPAD™ package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS63060
TPS63061
WSON (10)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
.
.
Simplified Schematic
Efficiency vs Output Current
100
90
80
70
60
50
40
30
20
V_OUT = 5 V
10 TPS63061
Power Save Enabled
0
0.0001
0.001
0.01
0.1
V_IN = 4.8 V
V_IN = 7.2 V
1
10
Output Current (A)
V_IN
2.5 V to 12 V
TPS63060
TPS63061
L1
L2
VIN
VOUT
EN
VAUX
FB
PS/SYNC
GND
PG
PGND
V_OUT
5 V, 800 mA
PG
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.