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TPS628503-Q1
  • TPS628503-Q1
  • TPS628503-Q1

TPS628503-Q1

ACTIVE

2.7-V to 6-V, 3-A automotive step-down converter in SOT583 package

Texas Instruments TPS628503-Q1 Product Info

1 April 2026 3

Parameters

Rating

Automotive

Topology

Buck

Iout (max) (A)

3

Vin (max) (V)

6

Vin (min) (V)

2.7

Vout (max) (V)

5.5

Vout (min) (V)

0.6

Features

Enable, Fixed Output, Forced PWM, Frequency synchronization, Light Load Efficiency, Light load efficiency, Output discharge, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, Tracking, UVLO Fixed, UVLO fixed, Wettable flanks package

EMI features

Spread Spectrum

Control mode

current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.000017

Duty cycle (max) (%)

100

Package

SOT-5X3 (DRL)-8-3.36 mm² 2.1 x 1.6

Features

  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C TA
  • Functional Safety-Capable
  • Optimized for low EMI requirements
    • Optional pseudo-random spread spectrum reduces peak emissions
  • TJ = –40°C to +150°C
  • Family of 1A and 2A (continuous) and 3A (peak) converters
  • Input voltage range: 2.7V to 6V
  • Quiescent current: 17µA typical
  • Output voltage from 0.6V to 5.5V
  • Output voltage accuracy ±1% (PWM operation)
  • Forced PWM or PWM/PFM operation
  • Adjustable switching frequency: 1.8MHz to 4MHz
  • Precise ENABLE input allows:
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Foldback overcurrent protection – optional
  • Power-good output with window comparator
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C TA
  • Functional Safety-Capable
  • Optimized for low EMI requirements
    • Optional pseudo-random spread spectrum reduces peak emissions
  • TJ = –40°C to +150°C
  • Family of 1A and 2A (continuous) and 3A (peak) converters
  • Input voltage range: 2.7V to 6V
  • Quiescent current: 17µA typical
  • Output voltage from 0.6V to 5.5V
  • Output voltage accuracy ±1% (PWM operation)
  • Forced PWM or PWM/PFM operation
  • Adjustable switching frequency: 1.8MHz to 4MHz
  • Precise ENABLE input allows:
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Foldback overcurrent protection – optional
  • Power-good output with window comparator

Description

The TPS62850x-Q1 is a family of pin-to-pin 1A, 2A (continuous), and 3A (peak) high efficiency, easy-to-use synchronous step-down DC/DC converters. These devices are based on a peak current mode control topology. These devices are designed for automotive applications such as infotainment and advanced driver assistance systems. Low resistive switches allow up to 2A continuous output current and 3A peak current. In the TPS62850x-Q1, the switching frequency is externally adjustable from 1.8MHz to 4MHz. The devices can also be synchronized to an external clock in the same frequency range. In PWM/PFM mode, the devices automatically enter power save mode at light loads to maintain high efficiency across the whole load range. The family provides a 1% output voltage accuracy in PWM mode which helps design a power supply with high output voltage accuracy.

The TPS62850x-Q1 are available in an SOT583 package.

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