Product details

Iout (Max) (A) 0.7 Vin (Min) (V) 2.5 Vin (Max) (V) 5.5 Vout (Min) (V) 5 Vout (Max) (V) 5 Switching frequency (Typ) (kHz) 4000 Regulated outputs (#) 1 Features Enable, Input/Output Isolation Operating temperature range (C) -40 to 85
Iout (Max) (A) 0.7 Vin (Min) (V) 2.5 Vin (Max) (V) 5.5 Vout (Min) (V) 5 Vout (Max) (V) 5 Switching frequency (Typ) (kHz) 4000 Regulated outputs (#) 1 Features Enable, Input/Output Isolation Operating temperature range (C) -40 to 85
  • 91% Efficiency at 4MHz Operation
  • Wide VIN Range From 2.5V to 5.5V
  • IOUT ≥550mA at VOUT = 5.0V, VIN ≥3.3V
  • Fixed Output Voltage 5.0V
  • ±2% Total DC Voltage Accuracy
  • 43µA Supply Current
  • Best-in-Class Line and Load Transient
  • VIN ≥ VOUT Operation
  • Low-Ripple Light-Load PFM Mode
  • True Load Disconnect During Shutdown
  • Thermal Shutdown and Overload Protection
  • Sub 1-mm Profile Solution
  • Total Solution Size <9mm2
  • 9-Pin MicroSiP Packaging
  • 91% Efficiency at 4MHz Operation
  • Wide VIN Range From 2.5V to 5.5V
  • IOUT ≥550mA at VOUT = 5.0V, VIN ≥3.3V
  • Fixed Output Voltage 5.0V
  • ±2% Total DC Voltage Accuracy
  • 43µA Supply Current
  • Best-in-Class Line and Load Transient
  • VIN ≥ VOUT Operation
  • Low-Ripple Light-Load PFM Mode
  • True Load Disconnect During Shutdown
  • Thermal Shutdown and Overload Protection
  • Sub 1-mm Profile Solution
  • Total Solution Size <9mm2
  • 9-Pin MicroSiP Packaging

The TPS81256 device is a complete MicroSiP DC/DC step-up power solution intended for battery-powered portable applications. Included in the package are the switching regulator, inductor and input/output capacitors. Only a tiny additional output capacitor is required to finish the design.

The TPS81256 is based on a high-frequency synchronous step-up DC/DC converter optimized for battery-powered portable applications.

The DC/DC converter operates at a regulated 4-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 supply current to 43µA (typical) during light load operation. Intended for low-power applications, the TPS81256 supports more than 3W output power over a full Li-Ion battery voltage range. Input current in shutdown mode is less than 1µA (typical), which maximizes battery life.

The TPS81256 offers a very small solution size of less than 9mm2 due to minimum amount of external components. The solution is packaged in a compact (2.6mm x 2.9mm) and low profile (1.0mm) BGA package suitable for automated assembly by standard surface mount equipment.

The TPS81256 device is a complete MicroSiP DC/DC step-up power solution intended for battery-powered portable applications. Included in the package are the switching regulator, inductor and input/output capacitors. Only a tiny additional output capacitor is required to finish the design.

The TPS81256 is based on a high-frequency synchronous step-up DC/DC converter optimized for battery-powered portable applications.

The DC/DC converter operates at a regulated 4-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 supply current to 43µA (typical) during light load operation. Intended for low-power applications, the TPS81256 supports more than 3W output power over a full Li-Ion battery voltage range. Input current in shutdown mode is less than 1µA (typical), which maximizes battery life.

The TPS81256 offers a very small solution size of less than 9mm2 due to minimum amount of external components. The solution is packaged in a compact (2.6mm x 2.9mm) and low profile (1.0mm) BGA package suitable for automated assembly by standard surface mount equipment.

Download

Similar products you might be interested in

Same functionality with different pin-out to the compared device.
TPS61253A ACTIVE 3.8-MHz, 5-V / 4-A Boost in 1.2-mm x 1.3-mm WCSP Discrete solution

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 5
Type Title Date
* Data sheet TPS81256 3-W, High Efficiency Step-Up Converter In MicroSiP Packaging datasheet (Rev. D) PDF | HTML 02 Feb 2018
Selection guide Innovative DC/DC Power Modules Selection Guide (Rev. D) 14 Oct 2021
User guide Manufacturing and Rework Design Guide for MicroSiP™ Power Modules (Rev. A) PDF | HTML 16 Jun 2021
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
EVM User's guide TPS8125xEVM 13 Apr 2012

Design & development

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

Evaluation board

TPS81256EVM-121 — 3W High-Efficiency Step-up Converter in MicroSiP™ package Evaluation Module

The TPS81256EVM-121 enables test and evaluation of Texas Instruments' TPS81256 devices, a series of 4.5-MHz, step-up DC-DC converters. This user's guide includes EVM specifications, a schematic diagram, a bill of materials, and board layout images. The TPS81256 device is an ideal power-supply (...)

Not available on TI.com
Simulation model

TPS81256 Unencrypted PSpice Transient Model Package (Rev. A) TPS81256 Unencrypted PSpice Transient Model Package (Rev. A)

Simulation model

TPS81256 TINA-TI Transient Spice Model TPS81256 TINA-TI Transient Spice Model

Simulation model

TPS81256 TINA-TI Transient Reference Design TPS81256 TINA-TI Transient Reference Design

Simulation tool

PSPICE-FOR-TI PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

TIDA-00554 — DLP Ultra-mobile NIR Spectrometer for Portable Chemical Analysis with Bluetooth Connectivity

The ultra-mobile near-infrared (NIR) spectrometer reference design utilizes Texas Instruments' DLP technology in conjunction with a single-element InGaAs detector to deliver high performance measurements in a portable form factor that is more affordable than architectures using an expensive InGaAs (...)
Package Pins Download
(SIP) 9 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos