1 Features
1• Start-Up Into a Full Load With Supply Voltages as
Low as 0.9 V Over Full Temperature Range
• Minimum 100-mA Output Current From 0.8-V
Supply Voltage, 250 mA From 1.8 V
• High Power Conversion Efficiency, up to 90%
• Power-Save Mode for Improved Efficiency at Low
Output Currents
• Device Quiescent Current Less Than 50 μA
• Added System Security With Integrated Low-
Battery Comparator
• Low-EMI Converter (Integrated Antiringing Switch
Across Inductor)
• Micro-Size 10-Pin MSOP Package
• Evaluation Modules Available
(TPS6100xEVM–156)

2 Applications
• Single- and Dual-Cell Battery Operated Products
• MP3-Players and Wireless Headsets
• Pagers and Cordless Phones
• Portable Medical Diagnostic Equipment
• Remote Controls

3 Description
The TPS6100x devices are boost converters intended
for systems that are typically operated from a singleor
dual-cell nickel-cadmium (NiCd), nickel-metal
hydride (NiMH), or alkaline battery. The converter
output voltage can be adjusted from 1.5 V to a
maximum of 3.3 V and provides a minimum output
current of 100 mA from a single battery cell and 250
mA from two battery cells. The converter starts up into a full load with a supply voltage of 0.9 V and
stays in operation with supply voltages as low as 0.8
V.
The converter is based on a fixed-frequency, current-
mode pulse-width-modulation (PWM) controller that
goes into power-save mode at low load currents. The
current through the switch is limited to a maximum of
1100 mA, depending on the output voltage. The current sense is integrated to further minimize
external component count. The converter can be
disabled to minimize battery drain when the system is
put into standby.
A low-EMI mode is implemented to reduce
interference and radiated electromagnetic energy that
is caused by the ringing of the inductor when the
inductor discharge-current decreases to zero. The device is packaged in the space-saving 10-pin MSOP
package.