Texas Instruments TPS61002
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.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 converter is based on a fixed-frequency, currentmode 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.