TPS62085_15 Datasheet, PDF (1/25 Pages) Texas Instruments – TPS6208x 3-A Step-Down Converter With Hiccup Short-Circuit Protection In 2 × 2 QFN Package

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS62085, TPS62086, TPS62087
SLVSB70A – OCTOBER 2013 – REVISED JUNE 2015
TPS6208x 3-A Step-Down Converter With Hiccup Short-Circuit Protection
In 2 × 2 QFN Package
1 Features
•1 DCS-Control™ Topology
• Up to 95% Efficiency
• Hiccup Short-Circuit Protection
• Power Save Mode for Light Load Efficiency
• 100% Duty Cycle for Lowest Dropout
• 2.5-V to 6.0-V Input Voltage Range
• 17-μA Operating Quiescent Current
• 0.8-V to V_IN Adjustable Output Voltage
• 1.8-V and 3.3-V Fixed Output Voltage
• Output Discharge
• Power Good Output
• Thermal Shutdown Protection
• Available in 2-mm × 2-mm QFN Package
2 Applications
• Battery-Powered Applications
• Point-of-Load
• Processor Supplies
• Hard Disk Drives
3 Description
The TPS62085, TPS62086, and TPS62087 devices
are high-frequency synchronous step-down
converters optimized for small solution size and high
efficiency. With an input voltage range of 2.5 V to
6.0 V, common battery technologies are supported.
The devices focus on high-efficiency step-down
conversion over a wide output current range. At
medium to heavy loads, the converter operates in
PWM mode and automatically enters Power Save
Mode operation at light load to maintain high
efficiency over the entire load current range.
To address the requirements of system power rails,
the internal compensation circuit allows a large
selection of external output capacitor values ranging
from 10 µF to 150 µF. Together with its DCS-Control
architecture, excellent load transient performance and
output voltage regulation accuracy are achieved. The
devices are available in a 2-mm × 2-mm QFN
package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS62085
TPS62086
VSON (7)
2.00 mm × 2.00 mm
TPS62087
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Typical Application Schematic
V_IN
2.5V to 6V _C1
10µF
TPS62087
VIN
SW
EN
VOS
FB
GND
PG
L1
0.47µH
R3
1M
C2
22µF
V_OUT
1.8V/3A
POWER GOOD
Typical Application Efficiency
100
90
80
70
60
Vout = 1.8 V
50
0.001
0.010
0.100
Iout (A)
Vin = 2.5V
Vin = 3.3V
Vin = 4.2V
Vin = 5.0V
1.000
C004
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.