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TPS628501

ACTIVE

2.7V-to-6V 1A adjustable-frequency step-down converter in SOT-583 package

Product details

Rating Catalog Topology Buck Iout (max) (A) 1 Vin (max) (V) 6 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 0.6 Features Enable, Forced PWM, Frequency synchronization, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000017 Duty cycle (max) (%) 100 TI functional safety category Functional Safety-Capable
Rating Catalog Topology Buck Iout (max) (A) 1 Vin (max) (V) 6 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 0.6 Features Enable, Forced PWM, Frequency synchronization, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000017 Duty cycle (max) (%) 100 TI functional safety category Functional Safety-Capable
SOT-5X3 (DRL) 8 3.36 mm² (2.1 mm × 1.6 mm)
  • Functional Safety-Capable
  • Input voltage range: 2.7V to 6V
  • Output voltage from 0.6V to 5.5V
  • 1% feedback voltage accuracy (full temperature range)
  • TJ = –40°C to +150°C
  • Family of 1A, 2A (continuous), and 3A (peak) devices
  • Adjustable switching frequency and sync of 1.8MHz to 4MHz
  • Forced PWM or PWM and PFM operation
  • Quiescent current 17µA (typical)
  • 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 adjustable soft start, see the TPS628511
  • Functional Safety-Capable
  • Input voltage range: 2.7V to 6V
  • Output voltage from 0.6V to 5.5V
  • 1% feedback voltage accuracy (full temperature range)
  • TJ = –40°C to +150°C
  • Family of 1A, 2A (continuous), and 3A (peak) devices
  • Adjustable switching frequency and sync of 1.8MHz to 4MHz
  • Forced PWM or PWM and PFM operation
  • Quiescent current 17µA (typical)
  • 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 adjustable soft start, see the TPS628511

The TPS62850x is a family of pin-to-pin 1A, 2A (continuous), and 3A (peak) high efficiency, easy-to-use synchronous step-down DC/DC converters. The devices are based on a peak current mode control topology. Low resistive switches allow up to 2A continuous output current and 3A peak current. The switching frequency is externally adjustable from 1.8MHz to 4MHz and can also be synchronized to an external clock in the same frequency range. In PWM and PFM mode, the TPS62850x automatically enters power save mode at light loads to maintain high efficiency across the whole load range. The TPS62850x provides a 1% output voltage accuracy in PWM mode, which helps design a power supply with high output voltage accuracy, fulfilling tight supply voltage requirements of digital processors and FPGA.

The TPS62850x is available in an 8-pin 1.60mm × 2.10mm SOT583 package.

The TPS62850x is a family of pin-to-pin 1A, 2A (continuous), and 3A (peak) high efficiency, easy-to-use synchronous step-down DC/DC converters. The devices are based on a peak current mode control topology. Low resistive switches allow up to 2A continuous output current and 3A peak current. The switching frequency is externally adjustable from 1.8MHz to 4MHz and can also be synchronized to an external clock in the same frequency range. In PWM and PFM mode, the TPS62850x automatically enters power save mode at light loads to maintain high efficiency across the whole load range. The TPS62850x provides a 1% output voltage accuracy in PWM mode, which helps design a power supply with high output voltage accuracy, fulfilling tight supply voltage requirements of digital processors and FPGA.

The TPS62850x is available in an 8-pin 1.60mm × 2.10mm SOT583 package.

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS62850x 2.7V to 6V, 1A / 2A / 3A, Step-Down Converter in SOT583 Package datasheet (Rev. C) PDF | HTML Jun 6, 2025
Technical article Simplify radar development for your next IoT application PDF | HTML Feb 22, 2022
Application note Loop Gain Reconstruction of a Step-Down Converter from Output Impedance PDF | HTML Jan 20, 2022
Application note How to Measure Impedance of a Power Distribution Network of a DC-DC Converter PDF | HTML Jan 20, 2022
Functional safety information TPS62850x Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML Mar 24, 2021

Design & development

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

Evaluation board

TPS628502EVM-092 — 2.7 -V to 6-V, 2-A automotive step-down converter in SOT583 package evaluation module

The TPS628502EVM-092 evaluation module is designed to evaluate the TPS6285X-Q1 devices. The TPS6285X-Q1 devices are high-frequency, synchronous, step-down converters optimized for a small solution size and high-efficiency. The devices focus on high-efficiency, step-down conversion over a wide (...)

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Simulation model

TPS628501 and TPS628501-Q1 PSpice Transient Model

SLUM732.ZIP (94 KB) - PSpice model
Supported products & hardware
Simulation model

TPS628501 and TPS628501-Q1 SIMPLIS Transient and Average Model

SLUM782.ZIP (633 KB) - SIMPLIS model
Supported products & hardware
Reference design

TIPA-050000 — AM68x base features, eFuse, SD card and USB2.0 power-supply solution for industrial applications

This power-supply solution for the AM68x processor is designed for low cost, small size and non-safety power designs as used on SK-AM68 Processor Starter Kit. A selection guide that reviews system tradeoffs and design benefits is included. The guide can assist in power design selection and feature (...)

Supported products & hardware
Reference design

TIPA-050001 — AM68x base features, eFuse and SD card power-supply solution for industrial applications

This power-supply solution for the AM68x processor is designed for low cost, small size and non-safety power designs as used on SK-AM68 Processor Starter Kit. A selection guide that reviews system tradeoffs and design benefits is included. The guide can assist in power design selection and feature (...)

Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
SOT-5X3 (DRL) 8 Ultra Librarian

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