TPS62170-Q1 Datasheet, PDF (1/33 Pages) Texas Instruments – 3-V to17-V 0.5-A Step-Down Converters with DCS-Control

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TPS62170-Q1, TPS62171-Q1, TPS62172-Q1
SLVSCK7A – DECEMBER 2014 – REVISED SEPTEMBER 2016
TPS6217x-Q1 3-V to17-V 0.5-A Step-Down Converters with DCS-Control™
1 Features
•1 DCS-Control™ Topology
• Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade: –40°C to 125°C
Operating Junction Temperature Range
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C4B
• Input Voltage Range: 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
• Available in a 2 × 2 mm, WSON-8 Package
2 Applications
• Automotive 12-V Rail Supplies
• Power Over Coax POL Supply
• Camera, Video Modules
• LDO Alternative
3 Description
The TPS6217x-Q1 family is an easy to use
synchronous step down DC-DC converter 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 their 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 draw quiescent
current of about 17 μA from VIN. Power Save Mode,
entered automatically and seamlessly if 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 device, available in adjustable and fixed output
voltage versions, is packaged in an 8-pin WSON
package measuring 2 × 2 mm (DSG).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS62170-Q1
WSON (8)
2.00 mm × 2.00 mm
TPS62171-Q1
WSON (8)
2.00 mm × 2.00 mm
TPS62172-Q1
WSON (8)
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
VIN
10uF
VIN
SW
EN
VOS
TPS62170-Q1
AGND
PG
PGND
FB
2.2µH
100k
470k
150k
3.3V / 0.5A
22uF
Copyright © 2016, Texas Instruments Incorporated
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.