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.