2.7-V to 6-V, 2-A automotive step-down converter in SOT583 package

2.7-V to 6-V, 2-A automotive step-down converter in SOT583 package



Product details


Vin (Min) (V) 2.7 Vin (Max) (V) 6 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 2 Iq (Typ) (uA) 17 Switching frequency (Min) (kHz) 1800 Switching frequency (Max) (kHz) 4000 Features Enable, Fixed Output, Forced PWM, Frequency Synchronization, Light Load Efficiency, Output Discharge, Power Good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, Tracking, UVLO Fixed, Wettable Flanks Package Operating temperature range (C) -40 to 125 Rating Automotive, Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

SOT-5X3 (DRL) 8 3 mm² 2.1 x 1.2 SOT-5X3 (DRL) 8 open-in-new Find other Buck converters (integrated switch)


  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C TA
  • Functional Safety-Capable
  • TJ = –40°C to +150°C
  • Input voltage range: 2.7 V to 6 V
  • Quiescent current 15 µA typical
  • Output voltage from 0.6 V to 5.5 V
  • Output voltage accuracy ±1% (PWM operation)
  • Forced PWM or PWM/PFM operation
  • Adjustable switching frequency of 1.8 MHz to 4 MHz
  • Precise ENABLE input allows:
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Spread spectrum clocking - optional
  • Foldback overcurrent protection - optional
  • Power-good output with window comparator
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The TPS62850x-Q1 is a family of pin-to-pin 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. They are designed for automotive applications such as Infotainment and Advanced Driver Assistance Systems. Low resistive switches allow up to 2-A continuous output current at high ambient temperature. The switching frequency is externally adjustable from 1.8 MHz to 4 MHz and can also be synchronized to an external clock in the same frequency range. In PWM/PFM mode, the TPS62850x-Q1 automatically enter Power Save Mode at light loads to maintain high efficiency across the whole load range. The TPS62850x-Q1 provide a 1% output voltage accuracy in PWM mode which helps design a power supply with high output voltage accuracy.

The TPS62850x-Q1 is available in a SOT583 package.

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Technical documentation

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Type Title Date
* Data sheet TPS62850x-Q1 2.7-V to 6-V, 1-A / 2-A Automotive Step-Down Converter in SOT583 Package datasheet (Rev. B) Nov. 13, 2020
Application note Improving Efficiency at Higher Loads with High Switching Frequencies Jun. 16, 2021
Technical article Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy levels Nov. 18, 2020
Functional safety information TPS62850x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA Oct. 14, 2020
User guide TPS628502EVM-092 User's Guide Jan. 22, 2020
Application note Synchronizing DC/DC Converters in a Power Tree Jan. 16, 2020
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019

Design & development

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Hardware development

document-generic User guide

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 output (...)

  • 2.7-V to 6-V input voltage range
  • Output voltage accuracy +/- 1%
  • 2-A output current
  • 15-uA typical quiescent current
  • Active output discharge

Design tools & simulation

SLUM731.ZIP (92 KB) - PSpice Model
SLUM734.ZIP (105 KB) - PSpice Model
SLUM765A.ZIP (649 KB) - SIMPLIS Model
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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CAD/CAE symbols

Package Pins Download
SOT-5X3 (DRL) 8 View options

Ordering & quality

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