TPS62175 Datasheet, PDF (1/37 Pages) Texas Instruments – 28V, 0.5A Step-Down Converter with Sleep Mode

TPS62175, TPS62177
www.ti.com
SLVSB35A – OCTOBER 2012 – REVISED NOVEMBER 2012
28V, 0.5A Step-Down Converter with Sleep Mode
Check for Samples: TPS62175, TPS62177
FEATURES
1
•2 DCS-Control™ Topology
• Input Voltage Range 4.75 to 28V
• Quiescent Current typ. 4.8µA (Sleep Mode)
• 100% Duty Cycle Mode
• Active Output Discharge
• Power Good Output
• Output Current of 500mA
• Output Voltage Range 1V to 6V
• Switching Frequency of Typically 1MHz
• Seamless Power Save Mode Transition
• Undervoltage Lockout
• Short Circuit Protection
• Over Temperature Protection
• Available in 2 x 3 mm 10-pin WSON Package
APPLICATIONS
• General 12V/24V Point Of Load Supply
• Ultra Mobile PC, Embedded PC
• Low Power Supply for Microprocessor
• High Efficiency LDO Alternative
• Industrial Sensors
spacingspacing
spacingspacing
spacingspacing
4.75 to 28V
VIN
10uH
SW
DESCRIPTION
The TPS62175/7 is a high efficiency synchronous
step-down DC-DC converter, based on the DCS-
Control™ topology.
With a wide operating input voltage range of 4.75 to
28V, the device is ideally suited for systems powered
from multi cell Li-Ion as well as 12V and even higher
intermediate supply rails, providing up to 500mA
output current.
The TPS62175/7 automatically enters Power Save
Mode at light loads, to maintain high efficiency across
the whole load range. As well, it features a Sleep
Mode to supply applications with advanced power
save modes like ultra low power micro controllers.
The Power Good output may be used for power
sequencing and/or Power On Reset.
The device features a typical quiescent current of
22uA in normal mode and 4.8uA in Sleep Mode. In
Sleep Mode, the efficiency at very low load currents
can be increased by as much as 20%. In shutdown
mode, the shutdown current is less than 2uA and the
output is actively discharged.
The TPS62175/7, available in an adjustable and a
fixed output voltage version, is packaged in a small
2x3mm 10-pin WSON package.
3.3V/0.5A
2.2uF
EN TPS62177 VOS
SLEEP
PG
100k
22uF
AGND
FB
PGND
NC
Figure 1. Typical Application and Efficiency
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
DCS-Control is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated