TPS82085_15 Datasheet, PDF (1/25 Pages) Texas Instruments – TPS82085 3-A High Efficiency Step-Down Converter MicroSiP with Integrated Inductor

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TPS82085
SLVSCN4B – OCTOBER 2014 – REVISED AUGUST 2015
TPS82085 3-A High Efficiency Step-Down Converter MicroSiP™ with Integrated Inductor
1 Features
•1 3-A, Low Profile MicroSiP™ Power Module
• DCS-Control™ Topology
• Up to 95% Efficiency
• 17-µA Operating Quiescent Current
• -40°C to 125°C Operating Temperature Range
• Hiccup Short Circuit Protection
• 2.5-V to 6-V Input Voltage Range
• 0.8-V to V_IN Adjustable Output Voltage
• Power Save Mode for Light Load Efficiency
• 100% Duty Cycle for Lowest Dropout
• Output Discharge Function
• Power Good Output
• Integrated Soft Startup
• Over Temperature Protection
• 3.0-mm x 2.8-mm x 1.3-mm 8-Pin µSiL Package
2 Applications
• Battery Powered Applications
• Solid State Drives
• Processor Supply
• Mobile Phones
space
space
V_IN
2.5V to 6V _C1
10µF
1.8 V Output Application
TPS82085
VIN VOUT
EN
FB
GND
PG
R1
R3
200k 499k
R2
160k
C2
22µF
V_OUT
1.8V/3A
POWER GOOD
3 Description
The TPS82085 device is a 3-A step-down converter
MicroSiP™ module optimized for small solution size
and high efficiency. The power module integrates a
synchronous step-down converter and an inductor to
simplify design, reduce external components and
save PCB area. The low profile and compact solution
is suitable for automated assembly by standard
surface mount equipment.
To maximize efficiency, the converter operates in
PWM mode with a nominal switching frequency of
2.4MHz and automatically enters Power Save Mode
operation at light load currents. In Power Save Mode,
the device operates with typically 17-µA quiescent
current. Using the DCS-Control™ topology, the
device achieves excellent load transient performance
and accurate output voltage regulation. The EN and
PG pins, which support sequencing configurations,
bring a flexible system design. An integrated soft
startup reduces the inrush current required from the
input supply. Over temperature protection and Hiccup
short circuit protection deliver a robust and reliable
solution.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS82085
µSiL (8)
3.0 mm x 2.8 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
1.8 V Output Efficiency
100
90
80
70
60
1m
V_IN = 3.0 V
V_IN = 3.5 V
V_IN = 4.0 V
V_IN = 5.0 V
10m
100m
Load (A)
1
5
D002
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.