TPS62746

ACTIVE

Ultra-low-power DCDC converter with Vin-switch in WCSP

A newer version of this product is available

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
TPS62840 ACTIVE 60-nA quiescent current (IQ), 1.8-V to 6.5-VIN, high-efficiency 750-mA step-down converter Ultra-low IQ of 60 nA and higher output current up to 750 mA available
TPS62843 ACTIVE 1.8V to 5.5V input, 600mA ultra-low IQ step-down converter Smaller solution size for 275-nA IQ and 0.4-V to 3.6-V VOUT

Product details

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 0.3 Vin (min) (V) 2 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1200 Switching frequency (max) (kHz) 1200 Features Adaptive/Dynamic Voltage Scaling, Enable, Light load efficiency, Output discharge, Synchronous Rectification Control mode Constant on-time (COT), DCS-Control Vout (min) (V) 1.2 Vout (max) (V) 1.8, 3.3 Iq (typ) (µA) 0.3 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 0.3 Vin (min) (V) 2 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1200 Switching frequency (max) (kHz) 1200 Features Adaptive/Dynamic Voltage Scaling, Enable, Light load efficiency, Output discharge, Synchronous Rectification Control mode Constant on-time (COT), DCS-Control Vout (min) (V) 1.2 Vout (max) (V) 1.8, 3.3 Iq (typ) (µA) 0.3 Duty cycle (max) (%) 100
DSBGA (YFP) 8 1.8 mm² 1 x 1.8
  • Input voltage range VIN from 2.15 V to 5.5 V
  • Input voltage range down to 2.0 V once started
  • 300-mA output current
  • 360-nA operational quiescent current
  • Up to 90% efficiency at 10-µA output current
  • Power save mode operation
  • Selectable output voltages
    • 1.2 V and 1.8 V
  • Output voltage discharge
  • 1-mA /150-Ω integrated input voltage switch
  • Low output voltage ripple
  • Automatic transition to no ripple 100% mode
  • RF friendly DCS-Control™
  • Total solution size < 10 mm2
  • Small 1.6-mm × 0.9-mm, 8-ball WCSP package
  • Input voltage range VIN from 2.15 V to 5.5 V
  • Input voltage range down to 2.0 V once started
  • 300-mA output current
  • 360-nA operational quiescent current
  • Up to 90% efficiency at 10-µA output current
  • Power save mode operation
  • Selectable output voltages
    • 1.2 V and 1.8 V
  • Output voltage discharge
  • 1-mA /150-Ω integrated input voltage switch
  • Low output voltage ripple
  • Automatic transition to no ripple 100% mode
  • RF friendly DCS-Control™
  • Total solution size < 10 mm2
  • Small 1.6-mm × 0.9-mm, 8-ball WCSP package

The TPS62746 is a high efficiency step down converter with ultra low quiescent current of typical 360 nA. The device is optimized to operate with a 2.2-µH inductor and 10µF output capacitor. The device uses DCS-Control™ and operates with a typical switching frequency of 1.2 MHz. In Power Save Mode the device extends the light load efficiency down to a load current range of 10-µA and below. TPS62746 provides an output current of 300 mA. Once started the device operates down to an input voltage range of 2.0 V. This allows to operate the device directly from a single Li-MnO2 coin cell.

The TPS62746 provides two programmable output voltages of 1.2V and 1.8V selectable by one voltage select pin. The TPS62746 is optimized to provide a low output voltage ripple and low noise using a small output capacitor. Once the input voltage comes close to the output voltage the device enters the No Ripple 100% mode to prevent an increase of output ripple voltage. In this operation mode the device stops switching and turns the high side MOSFET switch on.

The TPS62746 has an integrated 1-mA switch that connects the supply voltage at pin VIN to the output VINSW. This low current switch can be used to disconnect a resistor divider from the input supply typically being used to measure the input voltage with an ADC.

The TPS62746 is a high efficiency step down converter with ultra low quiescent current of typical 360 nA. The device is optimized to operate with a 2.2-µH inductor and 10µF output capacitor. The device uses DCS-Control™ and operates with a typical switching frequency of 1.2 MHz. In Power Save Mode the device extends the light load efficiency down to a load current range of 10-µA and below. TPS62746 provides an output current of 300 mA. Once started the device operates down to an input voltage range of 2.0 V. This allows to operate the device directly from a single Li-MnO2 coin cell.

The TPS62746 provides two programmable output voltages of 1.2V and 1.8V selectable by one voltage select pin. The TPS62746 is optimized to provide a low output voltage ripple and low noise using a small output capacitor. Once the input voltage comes close to the output voltage the device enters the No Ripple 100% mode to prevent an increase of output ripple voltage. In this operation mode the device stops switching and turns the high side MOSFET switch on.

The TPS62746 has an integrated 1-mA switch that connects the supply voltage at pin VIN to the output VINSW. This low current switch can be used to disconnect a resistor divider from the input supply typically being used to measure the input voltage with an ADC.

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Technical documentation

Design & development

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Evaluation board

TPS62746EVM-706 — TPS6274x Ultra Low Iq Step-Down Converter Evaluation Module

The TPS62746EVM-706 is designed to help the user easily evaluate and test the operation and functionality of the TPS62746. The EVM converts a 2.0-V to 5.5-V input voltage to a regulated output that is set to either 1.2 V or 1.8 V at up to 300 mA. The TPS62746 has an integrated VIN switch and comes (...)

User guide: PDF
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Simulation model

TPS62746 PSpice Unencrypted Transient Model (Rev. A)

SLVMBG7A.ZIP (91 KB) - PSpice Model
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DSBGA (YFP) 8 Ultra Librarian

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