TPS61253

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3.5MHz, 1500mA peak loading current, high efficiency step-up converter in chip scale packaging

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Product details

Parameters

Vin (Min) (V) 2.65 Vin (Max) (V) 4.85 Vout (Min) (V) 5 Vout (Max) (V) 5 Switch current limit (Typ) (A) 3.6 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 3500 Switching frequency (Max) (kHz) 3500 Iq (Typ) (mA) 0.02 Features Enable, Light Load Efficiency, Load Disconnect Duty cycle (Max) (%) 100 Operating temperature range (C) -40 to 85 Type Converter Rating Catalog open-in-new Find other Boost converters (integrated switch)

Package | Pins | Size

DSBGA (YFF) 9 2 mm² 1.346 x 1.246 open-in-new Find other Boost converters (integrated switch)

Features

  • 93% Efficiency at 3.5-MHz Operation
  • 21-µA Quiescent Current in Standby Mode
  • 37-µA Quiescent Current in Normal Operation
  • Wide VIN Range From 2.3 V to 5.5 V
  • VIN ≥ VOUT Operation
  • IOUT ≥ 800 mA at VOUT= 4.5 V, VIN ≥ 2.65 V
  • IOUT ≥ 1000 mA at VOUT = 5.0 V, VIN ≥ 3.3 V
  • IOUT ≥ 1500 mA (Peak) at VOUT = 5.0 V, VIN ≥ 3.3 V
  • ±2% Total DC Voltage Accuracy
  • Light-Load PFM Mode
  • Selectable Standby Mode or True Load
    Disconnect During Shutdown
  • Thermal Shutdown and Overload Protection
  • Only Three Surface-Mount External Components
    Required
  • Total Solution Size < 25 mm2
  • 9-Pin NanoFree™ (CSP) Packaging
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Description

The TPS6125x device provides a power supply solution for battery-powered portable applications. Intended for low-power applications, the TPS6125x supports up to 800-mA load current from a battery discharged as low as 2.65V and allows the use of low cost chip inductor and capacitors.

With a wide input voltage range of 2.3 V to 5.5 V, the device supports applications powered by Li-Ion batteries with extended voltage range. Different fixed voltage output versions are available from 3.15 V to 5.0 V.

The TPS6125x operates at a regulated 3.5-MHz switching frequency and enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range. The PFM mode extends the battery life by reducing the quiescent current to 37 µA (typ) during light load operation.

In addition, the TPS6125x device can also maintain its output biased at the input voltage level. In this mode, the synchronous rectifier is current limited allowing external load (e.g. audio amplifier) to be powered with a restricted supply. In this mode, the quiescent current is reduced to 21 µA. During shutdown, the load is completely disconnected from the battery. Input current in shutdown mode is less than 1 µA (typ), which maximizes battery life.

The TPS6125x offers a very small solution size due to minimum amount of external components. It allows the use of small inductors and input capacitors to achieve a small solution size.

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Technical documentation

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Type Title Date
* Datasheet TPS6125x 3.5-MHz High Efficiency Step-Up Converter In Chip Scale Packaging datasheet (Rev. G) Jun. 16, 2016
Application notes Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Selection guides Low-Power DC/DC Converter Overview Guide (Rev. D) Feb. 09, 2017
Technical articles Four tips to debug a boost converter Nov. 29, 2016
Application notes Calculating and Measuring the No Load Input Current of the Boost Converter Sep. 23, 2016
Application notes Five Steps to a Good PCB Layout of the Boost Converter May 03, 2016
Application notes Basic Calculation of a Boost Converter's Power Stage (Rev. C) Jan. 08, 2014
User guides TPS6125xEVM-766, 3.5-MHZ HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE May 30, 2012
Application notes IQ: What it is, what it isn’t, and how to use it Jun. 17, 2011
Application notes Minimizing Ringing at the Switch Node of a Boost Converter Sep. 15, 2006

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
The TPS6125XEVM-766 enables test and evaluation of the Texas Instruments' TPS61253, TPS61258 and TPS61259 (TPS6125x) devices, a series of 3.5-MHz high efficiency, fixed output voltages up to 5.1-V, Chip Scale step-up dc-dc converters. The user's guide for this EVM includes EVM specifications, the (...)
Features
  • Efficiency: 93% at 3.5MHz Operation
  • 22µA Quiescent current in Standby Mode
  • Wide Input voltage: 2.3V to 5.5V
  • Output voltage: 4.5V to 5.1V
  • Output Current ≥1000mA at VOUT = 5.0V, VIN ≥3.3V

Design tools & simulation

SIMULATION MODELS Download
SLVM596A.ZIP (63 KB) - PSpice Model
SIMULATION MODELS Download
SLVM685.TSC (147 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVM686.ZIP (52 KB) - TINA-TI Spice Model

CAD/CAE symbols

Package Pins Download
DSBGA (YFF) 9 View options

Ordering & quality

Support & training

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Videos

Power Tips: Layout for a Boost Power Stage

This video shows a simplified schematic and PCB layout for a boost converter

Posted: 21-Jan-2016
Duration: 04:31

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