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TPS62125

  

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TPS62125 [3V-17V, 300mA Step Down Converter With Adjustable Enable Threshold And Hysteresis ]

other parts : TPS62125DSG  TPS62125DSGR  TPS62125DSGT  TPS62126 

Texas-Instruments
Texas Instruments

DESCRIPTION
The TPS62125 is a high efficiency synchronous step down converter optimized for low and ultra low power applications providing up to 300mA output current. The wide input voltage range of 3V to 17V supports four cell alkaline and 1 to 4 cell Li-Ion batteries in series configuration as well as 9V to 15V powered applications. The device includes a precise low power enable comparator which can be used as an input supply voltage supervisor (SVS) to address system specific power up and down requirements. The enable comparator consumes only 6µA quiescent current and features an accurate threshold of 1.2V typical as well as an adjustable hysteresis. With this feature, the converter can generate a power supply rail by extracting energy from a storage capacitor fed from high impedance sources such as solar panels or current loops. With its DCS - Control TM scheme the converter provides power save mode operation to maintain highest efficiency over the entire load current range. At light loads the converter operates in PFM mode (pulse frequency modulation) and transitions seamlessly and automatically in PWM (pulse width modulation) mode at higher load currents. The DCS - ControlTM scheme is optimized for low output ripple voltage in PFM mode in order to reduce output noise to a minimum and features excellent AC load regulation. An open drain power good output indicates once the output voltage is in regulation.

FEATURES
• Wide Input Voltage Range 3V to 17V
• Input SVS (Supply Voltage Supervisor) with
   Adjustable Threshold / Hysteresis Consuming
   typ. 6µA Quiescent Current
• Wide Output Voltage Range 1.2V to 10V
• Typ. 13 µA Quiescent Current
• 350nA typ. Shutdown Current
• Seamless Power Save Mode Transition
• DCS-ControlTM Scheme
• Low Output Ripple Voltage
• Up to 1MHz Switching Frequency
• Highest Efficiency over Wide VIN and VOUT
   Range
• Pin to Pin Compatible with TPS62160/70
• 100% Duty Cycle Mode
• Power Good Open Drain Output
• Output Discharge Function
• Small 2x2mm2 SON 8 pin Package

APPLICATIONS
• Embedded processing
• 4 cell alkaline, 1-4 cell Li-Ion battery powered
   applications
• 9V - 15V standby power supply
• Energy harvesting
• Inverter (negative VOUT)

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TPS62125 [3-V to 17-V, 300-mA Step-Down Converter With Adjustable Enable Threshold and Hysteresis ]

other parts : TPS62125DSG  TPS62125DSGR  TPS62125DSGT 

TI
Texas Instruments

Description
The TPS62125 device is a high-efficiency synchronous step-down converter optimized for low and ultralow power applications providing up to 300-mA output current. The wide input voltage range of 3 V to 17 V supports 4-cell alkaline and 1- to 4-cell Li-Ion batteries in series configuration as well as 9-V to 15-V powered applications. The device includes a precise low-power enable comparator which can be used as an input supply voltage supervisor (SVS) to address system specific power-up and power-down requirements. The enable comparator consumes only 6-µA quiescent current and features an accurate threshold of 1.2 V typical as well as an adjustable hysteresis. With this feature, the converter can generate a power supply rail by extracting energy from a storage capacitor fed from high impedance sources such as solar panels or current loops. With its DCS-Control scheme the converter provides power-save mode operation to maintain highest efficiency over the entire load current range. At light loads the converter operates in pulse frequency modulation (PFM) mode and transitions seamlessly and automatically in pulse width modulation (PWM) mode at higher load currents. The DCS-Control™ scheme is optimized for low-output ripple voltage in PFM mode in order to reduce output noise to a minimum and features excellent AC load regulation. An open-drain power good output indicates once the output voltage is in regulation.

Features
• Wide Input Voltage Range 3 V to 17 V
• Input Supply Voltage Supervisor (SVS) With
   Adjustable Threshold and Hysteresis Consuming
   Typical 6-µA Quiescent Current
• Wide Output Voltage Range 1.2 V to 10 V
• Typical 13-µA Quiescent Current
• 350-nA Typical Shutdown Current
• Seamless Power Save Mode Transition
• DCS-Control™ Scheme
• Low Output Ripple Voltage
• Up to 1-MHz Switching Frequency
• Highest Efficiency over Wide VIN and VOUT Range
• Pin to Pin Compatible with TPS62160/70
• 100% Duty Cycle Mode
• Power Good Open Drain Output
• Output Discharge Function
• Small 2-mm × 2-mm 8-pin WSON Package

Applications
• Embedded Processing
• 4-Cell Alkaline, 1- to 4-Cell Li-Ion Battery-Powered Applications
• 9-V to 15-V Standby Power Supply
• Energy Harvesting
• Inverter (Negative VOUT)

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