Product details

Vin (Min) (V) 2.7 Vin (Max) (V) 6 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 0.5 Iq (Typ) (uA) 17 Switching frequency (Min) (kHz) 2025 Switching frequency (Max) (kHz) 2475 Features Enable, Forced PWM, Frequency Synchronization, Light Load Efficiency, Output Discharge, Over Current Protection, Power Good, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO Adjustable Operating temperature range (C) -40 to 150 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 2.7 Vin (Max) (V) 6 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 0.5 Iq (Typ) (uA) 17 Switching frequency (Min) (kHz) 2025 Switching frequency (Max) (kHz) 2475 Features Enable, Forced PWM, Frequency Synchronization, Light Load Efficiency, Output Discharge, Over Current Protection, Power Good, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO Adjustable Operating temperature range (C) -40 to 150 Rating Catalog Regulated outputs (#) 1
SOT-5X3 (DRL) 8
  • Functional Safety-Capable
  • Input voltage range: 2.7 V to 6 V
  • Output voltage from 0.6 V to 5.5 V
  • 1% feedback voltage accuracy (full temperature range)
  • TJ = –40°C to +150°C
  • Switching frequency in PWM: 2.25 MHz
  • External synchronization from 1.8 MHz to 4 MHz
  • Forced PWM or PWM/PFM operation
  • Quiescent current 17 µA typical
  • Adjustable soft start-up to 10 ms
  • Precise ENABLE input allows:
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Power-good output with window comparator
  • For device options with selectable compensation, see TPS628501
  • Functional Safety-Capable
  • Input voltage range: 2.7 V to 6 V
  • Output voltage from 0.6 V to 5.5 V
  • 1% feedback voltage accuracy (full temperature range)
  • TJ = –40°C to +150°C
  • Switching frequency in PWM: 2.25 MHz
  • External synchronization from 1.8 MHz to 4 MHz
  • Forced PWM or PWM/PFM operation
  • Quiescent current 17 µA typical
  • Adjustable soft start-up to 10 ms
  • Precise ENABLE input allows:
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Power-good output with window comparator
  • For device options with selectable compensation, see TPS628501

The TPS62851x is a family of pin-to-pin 0.5-A, 1-A, and 2-A high efficiency, easy-to-use, synchronous step-down DC/DC converters. They are based on a peak current mode control topology. Low resistive switches allow up to 2-A continuous output current. The switching frequency is internally fixed at 2.25 MHz and can also be synchronized to an external clock in the range from 1.8 MHz to 4 MHz. In PWM/PFM mode, the TPS62851x automatically enters Power Save Mode at light loads to maintain high efficiency across the whole load range. The TPS62851x provide a 1% output voltage accuracy in PWM mode which helps design a power supply with high output voltage accuracy. The SS/TR pin allows setting the start-up time or tracking the output voltage to an external source. This allows external sequencing of different supply rails and limits the inrush current during start-up.

The TPS62851xis available in an 8-pin 1.6-mm × 2.1-mm SOT583 package, offering a high power density solution.

The TPS62851x is a family of pin-to-pin 0.5-A, 1-A, and 2-A high efficiency, easy-to-use, synchronous step-down DC/DC converters. They are based on a peak current mode control topology. Low resistive switches allow up to 2-A continuous output current. The switching frequency is internally fixed at 2.25 MHz and can also be synchronized to an external clock in the range from 1.8 MHz to 4 MHz. In PWM/PFM mode, the TPS62851x automatically enters Power Save Mode at light loads to maintain high efficiency across the whole load range. The TPS62851x provide a 1% output voltage accuracy in PWM mode which helps design a power supply with high output voltage accuracy. The SS/TR pin allows setting the start-up time or tracking the output voltage to an external source. This allows external sequencing of different supply rails and limits the inrush current during start-up.

The TPS62851xis available in an 8-pin 1.6-mm × 2.1-mm SOT583 package, offering a high power density solution.

Download

Similar products you might be interested in

open-in-new Compare products
Pin-for-pin with same functionality to the compared device.
NEW TPS628511 ACTIVE 2.7-V to 6-V, 1-A, fixed-frequency, step-down converter in SOT583 package Pin-to-pin 1-A version
NEW TPS628512 ACTIVE 2.7-V to 6-V, 2-A, fixed-frequency, step-down converter in SOT583 package Pin-to-pin 2-A version

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 8
Type Title Date
* Data sheet TPS62851x 2.7-V to 6-V, 0.5-A / 1-A / 2-A Step-Down Converter in SOT583 Package datasheet (Rev. A) 22 Mar 2021
Application note How to Measure Impedance of a Power Distribution Network of a DC-DC Converter 20 Jan 2022
Application note Loop Gain Reconstruction of a Step-Down Converter from Output Impedance 20 Jan 2022
User guide TPS62851xEVM-139 Evaluation Module (Rev. A) 24 Jun 2021
Application note Improving Efficiency at Higher Loads with High Switching Frequencies 16 Jun 2021
Certificate TPS628510EVM-139 EU RoHS Declaration of Conformity (DoC) 14 Jun 2021
Functional safety information TPS62851x Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA 24 Mar 2021
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019

Design & development

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

Evaluation board

TPS628510EVM-139 — TPS628510 evaluation board 2.7-V to 6-V, 0.5-A step down converter in SOT583 package

The TPS628510EVM evaluation module (EVM) is used to evaluate the TPS628510 device is a high-frequency, synchronous, step-down converter optimized for a small solution size and high efficiency. The device focuses on high-efficiency, step-down conversion over a wide output current range. (...)
In stock
Limit: 3
Evaluation board

TPS628511EVM-139 — 2.7-V to 6-V, 1-A step down converter in SOT583 package evaluation board

The TPS628511EVM-139 evaluation module (EVM) is used to evaluate the TPS62851x device. The TPS62851x device is a high-frequency, synchronous, step-down converter optimized for a small solution size and high efficiency. The devices focus on high-efficiency, step-down conversion over a wide output (...)
In stock
Limit: 3
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 (...)
Package Pins Download
SOT-5X3 (DRL) 8 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