TPS61020EVM-025

Product Summary

The TPS61020EVM-025 is a boost converter intended for systems that is typically operated from a single- or dual-cell nickel-cadmium (NiCd), nickel-metal hydride (NiMH), or alkaline battery. The converter output voltage of the TPS61020EVM-025 can be adjusted from 1.5 V to a maximum of 3.3 V, by an external resistor divider or, is fixed internally on the chip. The TPS61020EVM-025 provides an output current of 200 mA with a supply voltage of only 0.9 V. The converter starts up into a full load with a supply voltage of only 0.9 V and stays in operation with supply voltages down to 0.8 V. The converter is based on a fixed frequency, current mode, pulse-width-modulation (PWM) controller that goes automatically into power save mode at light load. It uses a built-in synchronous rectifier, so, no external Schottky diode is required and the system efficiency is improved. The current of the TPS61020EVM-025 through the switch is limited to a maximum value of 1300 mA. The converter can be disabled to minimize battery drain. During shutdown, the load is completely isolated from the battery.

Parametrics

TPS61020EVM-025 absolute maximum ratings: (1)Voltage range on LBO, COMP: 3.6 V; (2)Peak current into SW 1300 mA; (3)Continuous total power dissipation See Dissipation Rating Table; (4)Operating free-air temperature range, TA -40℃ to 85℃; (5)Maximum junction temperature, TJ 150℃; (6)Storage temperature range, Tstg -65℃ to 150℃; (7)Lead temperature 1,6 mm (1/16 inch) from case for 10s 260℃.

Features

TPS61020EVM-025 features: (1)Integrated Synchronous Rectifier for Highest Power Conversion Efficiency (>95%); (2)Start-Up Into Full Load With Supply Voltages Low as 0.9 V, Operating Down to 0.8 V; (3)200-mA Output Current From 0.9-V Supply; (4)Powersave-Mode for Improved Efficiency at Low Output Currents; (5)Autodischarge Allows to Discharge Output Capacitor During Shutdown; (6)Device Quiescent Current Less Than 50 μA; (7)Ease-of-Use Through Isolation of Load From; (8)Battery During Shutdown of Converter; (9)Integrated Antiringing Switch Across Inductor; (10)Integrated Low Battery Comparator; (11)Micro-Small 10-Pin MSOP Package; (12)Applications Include All Single- or Dual-Cell Battery Operated Products Like Internet Audio Players, Pager, Portable Medical Diagnostic Equipment, Remote Control, Wireless Headsets; (13)EVM Available (TPS6101xEVM-157).

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