Features: · Regulated 5 V ± 4% Output Voltage With up to 100 mA Output Current From a 1.8 V to 3.6 V Input Voltage Range
· 65-mA Quiescent Supply Current
· 0.05-mA Shutdown Current, Battery Is Isolated From Load in Shutdown
· Integrated Low-Battery or Power-Good Indicator
· Low Output Voltage Ripple Over Complete Output Current Range
· Easy-To-Design With Low-EMI Power Supply Since no Inductors Are Required
· Evaluation Module Available (TPS60140EVM-144)ApplicationReplaces DC/DC Converters With Inductors in Battery-Powered Applications:
Two Battery Cells to 5 V Conversion
Portable Instruments
Miniature Equipment
Backup-Battery Boost Converters
Medical Instruments
5-V Smart Card Supply
Organizers, PDAsPinout
SpecificationsSupply voltage range at IN to GND and PGND . . . . . . . . . . . . . . . . . . . . 0.3 V to 3.6 V
Voltage range, at OUT, ENABLE, LBI, LBO, PG, FB to GND and PGND . . . 0.3 V to 5.4 V
Voltage range at C1+ TO GND . . . . . . . . . . . . . . . . . . . . . . . . . . .0.3 V to (VO + 0.3 V)
Voltage range at C1 TO GND . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to (VI + 0.3 V)
Voltage range at C2+ TO GND . . . . . . . . . . . . . . . . . . . . . . . . . . .0.3 V to (VO + 0.3 V)
Voltage range at C2 TO GND . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to (VI + 0.3 V)
Continuous output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mA
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 to 150
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . .260
Maximum junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
‡ V(ENABLE), V(LBI), V(LBO), and V(PG) can exceed VI up to the maximum rated voltage without increasing the leakage current drawn by these inputs
DescriptionThe TPS6014x step-up, regulated charge pumps generate a 5-V ±4% output voltage from a 1.8 V to 3.6 V input voltage range. The TPS6014x are typically powered by two alkaline, NiCd, or NiMH battery cells and provide an output current of minimum 100 mA from a 2-V input. Only four external capacitors are needed to build a complete voltage tripler charge pump.
The TPS6014x regulate the output by using the pulse-skip topology. The controller is optimized for lowest output voltage ripple over the complete output current range. The output peak current and therefore the output voltage ripple are drastically reduced compared to a conventional pulse-skip topology by regulating the charge pump output resistance. At light loads the maximum output resistance TPS6014x is limited to assure a low quiescent current.
The TPS60140 includes a low-battery comparator that issues a warning if the battery voltage drops below a user-adjustable threshold voltage. The TPS60141 features a power-good output that goes active when the output voltage reaches 90% of its nominal value.
The logic shutdown function disables the converter, reduces the supply current to a maximum of 1 A and disconnects the output from the input. Special current-control circuitry prevents excessive current from being drawn from the battery during start-up. This dc-dc converter requires no inductors, therefore, EMI is of little concern. TPS6014x is available in the small, thermally enhanced 20-pin TSSOP package (PWP).
TPS60141 Data Sheet
