TPS60125 Regulated 3.0-V High Efficiency Charge Pump With Power Good Indicator | TI.com

TPS60125
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Regulated 3.0-V High Efficiency Charge Pump With Power Good Indicator

 

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). They 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 devices 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 1uA 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 PowerPADTM package (PWP).

Features

  • High Average Efficiency Over Input Voltage Range Because of Special Switching Topology
  • Minimum 200-mA Output Current From an Input 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-uA Quiescent Supply Current
  • 0.05-uA Shutdown Current
  • Load Disconnected in Shutdown
  • Integrated Low Battery and Power Good Detectors
  • Evaluation Module Available (TPS60120EVM-142)
  • Applications
    • Applications 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

PowerPAD is a trademark of Texas Instruments Incorporated.

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Operating temperature range (C) Type Rating Package Group
TPS60125 Order now 1.8     3.6     3     3     0.2     1     210     450     0.055     Enable
Power Good    
-40 to 85     Charge Pump     Catalog     HTSSOP | 20    
TPS60120 Order now 1.8     3.6     3.3     3.3     0.2     1     210     450     0.055     Enable     -40 to 85     Charge Pump     Catalog     HTSSOP | 20    
TPS60121 Samples not available 1.8     3.6     3.3     3.3     0.2     1     210     450     0.055     Enable
Power Good    
-40 to 85     Charge Pump     Catalog     HTSSOP | 20    
TPS60122 Samples not available 1.8     3.6     3.3     3.3     0.1     1     210     450     0.055     Enable     -40 to 85     Charge Pump     Catalog     HTSSOP | 20    
TPS60123 Samples not available 1.8     3.6     3.3     3.3     0.1     1     210     450     0.055     Enable
Power Good    
-40 to 85     Charge Pump     Catalog     HTSSOP | 20    
TPS60124 Samples not available 1.8     3.6     3     3     0.2     1     210     450     0.055     Enable     -40 to 85     Charge Pump     Catalog     HTSSOP | 20