Features: *High Average Efficiency Over Input Voltage Range Because of Special Switching Topology
*Minimum 200-mA Output Current From an nput Voltage Range of 1.8-V to 3.6-V
*Regulated 3.3-V or 3-V ±4% Output Voltage
*No Inductors Required, Low EMI
*Only Four External Components Required
*55-m A Quiescent Supply Current
*0.05-m A Shutdown Current
*Load Disconnected in Shutdown
*Integrated Low Battery and Power Good Detectors
*Evaluation Module Available (TPS60120EVM-142)
ApplicationApplications Powered by Two Battery Cells
Portable Instruments
Battery-Powered Microprocessor Systems
Miniature Equipment
Backup-Battery Boost Converters
PDAs, Organizers, Laptops
MP-3 Portable Audio Players
Handheld Instrumentation
Medical Instruments (e.g., Glucose Meters)
Cordless Phones
Pinout
SpecificationsInput voltage range, VI (IN, OUT, ENABLE, FB, LBI, LBO/PG) . . . . . . . . . . . . . . . 0.3 V to 5.5 V
Differential input voltage, VID (C1+, C2+ to GND) . . . . . . . . . . . . . . . .. . 0.3 V to (VO + 0.3 V)
Differential input voltage, VID (C1, C2 to GND) . . . . . . . . . . . . . . . . . . 0.3 V to (VI + 0.3 V)
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . See dissipation rating table
Continuous output current TPS60120, TPS60121, TPS60124, TPS60125 . . . . . . . . .. . . . 300 mA
Continuous output current TPS60122, TPS60123 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mA
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 to 150
Lead temperature 1,6 mm (1/16 inch) from case for 10s . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Maximum junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 Description The TPS6012x step-up, regulated charge pumps generate a 3.3-V or 3-V ±4% output voltage from a 1.8-V to 3.6-V input voltage (two alkaline, NiCd,or NiMH batteries). TPS6012x can deliver an output current of at least 200 mA (100 mA for the TPS60122 and TPS60123), all from a 2-V input.Four external capacitors are needed to build a complete high efficiency dc/dc charge pump converter.To achieve the high efficiency over a wide input voltage range,the charge pump automatically selects between a 1.5x or doubler conversion mode. From a 2-V input, all ICs can start with full load current.
The TPS6012x feature the power-saving pulse-skip mode to extend battery life at light loads.TPS60120, TPS60122, and TPS60124 include a low battery comparator. TPS60121, TPS60123,and TPS60125 feature a power-good output. The logic shutdown function reduces the supply current to a maximum of 1 m A and disconnects the load 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 low concern. It is available in the small,thermally enhanced 20-pin PowerPAD package (PWP).
TPS60123 Data Sheet
