Product details


Iout (Max) (A) 1.6 Vin (Min) (V) 2.5 Vin (Max) (V) 5.5 Vout (Min) (V) 1.8 Vout (Max) (V) 1.8 Soft start Fixed Features Enable, Output Discharge, Spread Spectrum Operating temperature range (C) -40 to 85 Iq (Typ) (uA) 7000 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 5500 Switching frequency (Min) (kHz) 5500 Switching frequency (Typ) (kHz) 5500 Duty cycle (Max) (%) 72 Topology Buck, Synchronous Buck open-in-new Find other Buck modules (integrated inductor)


  • Wide VIN Range From 2.5V to 5.5V
  • Total Solution Size < 6.7 mm2
  • Sub 1-mm Profile Solution
  • ±1.5% DC Voltage Accuracy
  • Up to 1600-mA Load Current
  • Up to 90% Efficiency
  • Fixed Output Voltage:
    • TPS8268180: 1.80V
    • TPS8268150: 1.50V
    • TPS8268120: 1.20V
    • TPS8268105: 1.05V
    • TPS8268090: 0.90V
  • Low EMI by Spread Spectrum PWM Frequency
  • Best in Class Load and Line Transient Response
  • Internal Soft Start
  • Current Overload and Thermal Shutdown Protection
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The TPS8268x device is a complete DC/DC step-down power supply optimized for small solution size. Included in the package are the switching regulator, inductor and input/output capacitors. Integration of all passive components enables a tiny solution size of only 6.7mm2.

The TPS8268x is based on a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications in which high load currents in a very small solution size and height are required. The TPS8268x is optimized for high efficiency and low output voltage ripple and supports up to 1600-mA load current. With an input voltage range of 2.5-V to 5.5-V, the device supports applications powered by Li-Ion batteries as well as 5-V and 3.3-V rails.

The TPS8268x operates at a 5.5-MHz switching frequency with spread spectrum capability. For noise-sensitive applications, this provides a lower noise regulated output, as well as low noise at the input. The device supports a fixed output voltage, requiring no external feedback network.

These features, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency with the same size.

The TPS8268x is packaged in a compact (2.3mm × 2.9mm) and low profile BGA package suitable for automated assembly by standard surface mount equipment.

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Technical documentation

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Type Title Date
* Data sheet TPS8268x 1600-mA High-Efficiency MicroSiP Step-Down Converter Module (Profile < 1.0mm) datasheet (Rev. C) Jun. 22, 2015
Application note Understanding 100% mode in low-power DC/DC converters Jun. 22, 2018
Selection guide Innovative DC/DC Power Modules Selection Guide (Rev. C) Feb. 27, 2018
Application note Testing tips for applying external power to supply outputs without an input volt Oct. 24, 2016
White paper SiP Power Modules White Paper Jan. 26, 2016
Technical article MicroSiP: Five years of the world’s smallest power solution Nov. 21, 2015
Technical article Is a power module always the optimal solution for your space constrained SSD? Oct. 17, 2015
User guide TPS82681xxEVM-589 User’s Guide (Rev. A) Jul. 07, 2015
Application note IQ: What it is, what it isn’t, and how to use it Jun. 17, 2011

Design & development

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Hardware development

document-generic User guide

The TPS8268180EVM-589 is designed to help the user easily evaluate and test the operation and functionality of the TPS8268180. The EVM converts up to a 5.5-V input voltage to a 1.8-V regulated output voltage at up to 1.6A of output current. The TPS8268180 is a fully integrated (IC, inductor, and (...)


  • Up to 5.5V Input Voltage Range
  • 1.8V Output Voltage
  • 1.6A Output Current
  • <7 mm² total solution size
  • 1 mm total solution height

Design tools & simulation

PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

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