1A, 3MHz Buck Converter with I2C for Dynamic Voltage Scaling


Product details


Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Vout (Min) (V) 0.75 Vout (Max) (V) 1.5375 Iout (Max) (A) 0.8 Iq (Typ) (uA) 28 Switching frequency (Min) (kHz) 2650 Switching frequency (Max) (kHz) 3350 Features Enable, Frequency Synchronization, I2C/PMBus, Light Load Efficiency, Output Discharge, Synchronous Rectification, Adaptive/Dynamic Voltage Scaling Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

DSBGA (YZG) 12 0 mm² 2.282 x 1.514 open-in-new Find other Buck converters (integrated switch)


  • 88% Efficiency at 3-MHz Operation
  • 800-mA Output Current at VI = 2.7 V
  • 3-MHz Fixed Frequency Operation
  • Best in Class Load and Line Transient
  • Complete 1-mm Component Profile Solution
  • ±2% PWM DC Voltage Accuracy
  • 35-ns Minimum On-Time
  • Efficiency Optimized Power-Save Mode (Light PFM)
  • Transient Optimized Power-Save Mode (Fast PFM)
  • 28-µA Typical Quiescent Current
  • I2C Compatible Interface up to 3.4 Mbps
  • Pin-Selectable Output Voltage
  • Synchronizable On the Fly to External Clock Signal
  • Available in a 10-Pin QFN (3 × 3 mm) and 12-Pin NanoFree™ (CSP) Packaging
    • SmartReflex™ Compliant Power Supply
    • Split Supply DSPs and µP Solutions
      OMAP™, XSCALE™
    • Cell Phones, Smart-Phones
    • PDAs, Pocket PCs
    • Digital Cameras
    • Micro DC-DC Converter Modules

NanoFree, SmartReflex, OMAP, PowerPAD Is a trademark of Texas Instruments.
XSCALE is a trademark of Intel Corporation.
I2C is a trademark of Philips Corporation.

open-in-new Find other Buck converters (integrated switch)


The TPS6235x device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS6235x supports up to 800-mA load current and allows the use of small, low cost inductors and capacitors.

The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery. With an output voltage range adjustable via I2C interface down to 0.6 V, the device supports low-voltage DSPs and processors core power supplies in smart-phones, PDAs, and handheld computers.

The TPS6235x operates at 3-MHz fixed switching frequency and enters the efficiency optimized power-save mode operation at light load currents to maintain high efficiency over the entire load current range. In the shutdown mode, the current consumption is reduced to less than 2 µA.

The serial interface is compatible with Fast/Standard and High-Speed mode I2C specification allowing transfers at up to 3.4 Mbps. This communication interface is used for dynamic voltage scaling with voltage steps down to 12.5 mV, for reprogramming the mode of operation (Light PFM, Fast PFM or Forced PWM) or disable/enabling the output voltage.

open-in-new Find other Buck converters (integrated switch)

Technical documentation

Design & development

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

Hardware development


The TMS320DM8127 Camera Starter Kit (CSK) enables developers to begin designing wireless or wired connected digital video applications, such as security cameras, car DVRs, action-wearable cameras, drones, video conferencing, digital signage, stereo camera and other connected video products. The (...)

  • TMDSCSK8127: 60-mm x 44-mm TMS320DM8127 processor board
  • TMDSCSKCC: 90-mm x 90-mm I/O common carrier board
  • Integrated WiLink 8 single-band combo 2 x 2 MIMO WiFi, Bluetooth, and Bluetooth Smart (low energy) module
  • IPNC SDK with Linux 4.4 LTS kernel preloaded on included SD card enables fast application (...)

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
  • (...)
SLUA480.PDF (129 KB)

CAD/CAE symbols

Package Pins Download
DSBGA (YZG) 12 View options

Ordering & quality

Information included:
  • RoHS
  • 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. ​​​​​​​​​​​​​​