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Low Input Voltage Synchronous Boost Converter with Fixed 2.8V Output
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TPS61010, TPS61011, TPS61012, TPS61013, TPS61014, TPS61015, TPS61016SLVS314F –SEPTEMBER 2000–REVISED AUGUST 2015
TPS6101x High-Efficiency, 1-Cell and 2-Cell Boost Converters Features are boost converters intended Integrated Synchronous Rectifier typically operated froma single-Power Conversion Efficiency (NiCd), nickel-metal• Start-Up Into Full Load With alkaline battery.Lowas 0.9V, Operating voltage can be adjusted from• 200-mA Output Current Fromof 3.3V,by an external resistor• Powersave-Mode for Improved Efficiencyat Low divider or,is fixed internally on the chip. The devices
Output Currents provide an output currentof 200 mA witha supply
voltageof only 0.9V. The converter starts up intoa• Autodischarge Allowsto Discharge Output full load witha supply voltageof only 0.9V and staysCapacitor During Shutdown in operation with supply voltages downto 0.8V.• Device Quiescent Current Less Than50 μA
The converteris based ona fixed frequency, current• Ease-of-Use Through Isolationof Load From mode, pulse-width-modulation (PWM) controller thatBattery During Shutdownof Converter goes automatically into power save mode at light• Integrated Antiringing Switch Across Inductor load.It usesa built-in synchronous rectifier, so, no Integrated Low Battery Comparator external Schottky diodeis required and the system
efficiencyis improved. The current through the switch• Micro-Small 10-Pin MSOPor3 mmx3 mm QFN is limited toa maximum value of 1300 mA. ThePackage disabledto minimize battery drain.• EVM Available (TPS6101xEVM-157) the loadis completely isolated from
2 Applications function allows discharging the• All Single-or Dual-Cell Battery during shutdown mode. This isa microcontrolleror memoryis– Internet Audio Players residual voltage across the output– Pager capacitor can cause malfunctionof the applications.– Portable Medical Diagnostic Equipment When programming the ADEN-pin, the autodischarge Remote Control function can be disabled. A low-EMI mode is
implemented to reduce interference and radiated– Wireless Headsets electromagnetic energy when the converter enters
the discontinuous conduction mode. The deviceis
Simplified Application Circuit packagedin the micro-small space saving 10-pin
MSOP package. The TPS61010is also availableina mmx3 mm 10-pin QFN package.
Device Information(1)
