TLV61220

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TLV61220 SLVSB53A – MAY 2012 – REVISED DECEMBER 2014 TLV61220 Low-Input Voltage Step-Up Converter in Thin SOT-23 Package 1 Features 1 Up to 95% Efficiency at Typical Operating Conditions 5.5-μA Quiescent Current Startup Into Load at 0.7-V Input Voltage Operating Input Voltage from 0.7 V to 5.5 V Pass-Through Function during Shutdown Minimum Switching Current 200 mA Protections: – Output Overvoltage – Overtemperature – Input Undervoltage Lockout Adjustable Output Voltage from 1.8 V to 5.5 V Small 6-pin Thin SOT-23 Package 2 Applications Battery Powered Applications – 1 to 3 Cell Alkaline, NiCd or NiMH – 1 Cell Li-Ion or Li-Primary Solar or Fuel Cell Powered Applications Consumer and Portable Medical Products Personal Care Products White or Status LEDs Smartphones 3 Description The TLV61220 device provides a power-supply solution for products powered by either a single-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or onecell Li-Ion or Li-polymer battery. Possible output currents depend on the input-to-output voltage ratio. The boost converter is based on a hysteretic controller topology using synchronous rectification to obtain maximum efficiency at minimal quiescent currents. The output voltage of the adjustable version can be programmed by an external resistor divider, or is set internally to a fixed output voltage. The converter can be switched off...