TPS62170_15 Datasheet, PDF (1/34 Pages) Texas Instruments – Step-Down Converters

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TPS62170, TPS62171, TPS62172, TPS62173
SLVSAT8D – NOVEMBER 2011 – REVISED DECEMBER 2015
TPS6217x 3-V to 17-V, 0.5-A Step-Down Converters with DCS-Control™
1 Features
•1 DCS-Control™ Topology
• Input Voltage Range from 3 V to 17 V
• Up to 500-mA Output Current
• Adjustable Output Voltage from 0.9 V to 6 V
• Fixed Output Voltage Versions
• Seamless Power Save Mode Transition
• Typically 17-µA Quiescent Current
• Power Good Output
• 100% Duty Cycle Mode
• Short Circuit Protection
• Over Temperature Protection
• Pin to Pin Compatible with TPS62160 and
TPS62125
• Available in a 2-mm × 2-mm 8-Pin WSON
Package
2 Applications
• Standard 12-V Rail Supplies
• POL Supply from Single or Multiple Li-Ion Battery
• LDO Replacement
• Embedded Systems
• Digital Still Camera, Video
• Mobile PCs, Tablet-PCs, Modems
3 Description
The TPS6217x device family are easy to use
synchronous step-down DC-DC converters optimized
for applications with high power density. A high
switching frequency of typically 2.25 MHz allows the
use of small inductors and provides fast transient
response as well as high output voltage accuracy by
utilization of the DCS-Control™ topology.
With its wide operating input voltage range of 3 V to
17 V, the devices are ideally suited for systems
powered from either a Li-Ion or other battery as well
as from 12-V intermediate power rails. It supports up
to 0.5-A continuous output current at output voltages
between 0.9 V and 6 V (with 100% duty cycle mode).
Power sequencing is also possible by configuring the
enable and open-drain power good pins.
In power save mode, the devices show quiescent
current of about 17 μA from VIN. Power save mode,
entered automatically and seamlessly if the load is
small, maintains high efficiency over the entire load
range. In shutdown mode, the device is turned off
and shutdown current consumption is less than 2 μA.
The TPS6217x devices operate over a free air
temperature range of –40°C to 85°C. They are
available in adjustable and fixed output voltage
versions. The devices are packaged in a 2-mm × 2-
mm 8-pin WSON package (DSG).
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
TPS6217x
WSON (8)
2.00 mm x 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
space
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(3 .. 17) V
10 uF
Typical Application Schematic
VIN
SW
EN
VOS
TPS62171
AGND
PG
PGND
FB
2.2 µH
1.8 V / 0.5 A
100k
22 uF
Efficiency vs Output Current
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.