TPS627451DSST Part Information

Details for TPS627451DSST by Texas Instruments

Semiconductors - ICs>Power Management ICs - PMIC>Voltage Regulators

Part Description

The TPS62745 is a high efficiency ultra low power synchronous step down converter optimized for low power wireless applications. It provides a regulated output voltage consuming only 400-nA quiescent current. The device operates from two rechargeable Li-Ion batteries, Li-primary battery chemistries such as Li-SOCl2, Li-SO2, Li-MnO2 or four to six cell alkaline batteries. The input voltage range up to 10 V allows also operation from a USB port and thin-film solar modules. The output voltage is set with four VSEL pins between 1.8 V and 3.3 V for TPS62745 or 1.3 V and 2.8 V for TPS627451. TPS62745 features low output ripple voltage and low noise with a small output capacitor. An internal input voltage switch controlled by pin EN_VIN_SW connects the supply voltage to pin VIN_SW. The switch is intended to be used for an external voltage divider, scaling down the input voltage for an external ADC. The switch is automatically opened when the supply voltage is below the undervoltage lockout threshold. The TPS62745 is available in a small 12 pin 3 mm × 2 mm WSON package.

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Part Features

  • 16 Selectable Output Voltages from u2013 1.8 V to 3.3 V (TPS62745) u2013 1.3 V to 2.8 V (TPS627451)
  • Input Voltage Range VIN from 3.3 V to 10 V
  • Integrated Discharge Function at VOUT
  • Integrated input voltage switch
  • Low Output Ripple Voltage
  • Open Drain Power Good Output
  • Operates with a Tiny 3.3 u00b5H or 4.7 u00b5H Inductor
  • RF Friendly DCS-Controlu2122
  • Small 3 mm x 2 mm WSON Package
  • Typical 400 nA Quiescent Current
  • Up to 300 mA Output Current
  • Up to 90% efficiency with load currents >15 u00b5A

Part Specifications

Topology Synchronous Buck (Step Down)
Input Voltage Min 3.3V
Input Voltage Max 10V
No. of Outputs 1Outputs
DC / DC Converter IC Case WSON
No. of Pins 12Pins
Output Current 300mA
Output Voltage Min 1.3V
Output Voltage Max 2.8V
Switching Frequency 2.5MHz
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 2 - 1 year
SVHC No SVHC (27-Jun-2018)
RoHS Compliant

Alternative Part Descriptions

  • 10Vin Ultra Low Iq Step-Down Converter | Texas Instruments

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